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Solution to 790i Freezes

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August 13, 2008 11:34:34 PM

Hi Tweakers!

As sóme may have noticed the 790i chipset have had a serious issue, causing the system to freeze at random times, mostly when playing medias or gaming . Well I've have experienced the same problem, and searched the forums for several hours, untill I tonight, a little drunk after going to a party, have found the answer to this problem. It made me so glad that I wanted to post it on this forum, as I've received so much help myself from you guys. First I searched for Asus Striker II Extreme freezes, but it seemed that the issue are generally for all 790i chipsets. So finally I found some guys with EVGA motherboards, who made a kind of a blog on their solution to the issue.

Some of the changes proved very effective, but some also seemed to be only optional, as they never found out if it actually helped. This is the changes:

Increase Vdimm: fx. 1.7-1.8v
Increase NB/SPP Voltage: fx. 1.3-1.35v
Increase SB/MCP Voltage: fx. 1.5-1.55v
Increase tREF: fx. 7.7-7.8uS (Very effective!)

Eventually:

FSB Clock mode: Linked
Memory Ratio: Sync mode
(I don't think this can be chosen on the ASUS Striker II Extreme, but should help for EVGA 790i cards):
tCL (CAS Latency): Auto(7)
tRCD: Auto(7)
tRP: Auto(7)
tRAS: Auto(7)

At last, if you have a Q9450 processor like I do, they also said it would hardlock when the voltage goes below 1.2v, so they recommended setting this to 1.265v, as this would prevent it from going below 1.2v under load.

Hope this will correct your problem.

More about : solution 790i freezes

August 14, 2008 11:08:44 AM

A little correction here: Forget the tCL, tRCD, tRP, tRAS, I forgot that just was the RAM-timings. Try to loosen your RAM-timings instead. Furthermore I forgot that some experiences great increase in stability by changing Command per Clock (Memory) from 1T to 2T.

I applied these settings yesterday, and it all went well. Very well actually, haven't experienced the freezes I've had before, amongst others running SuperPI while running G15 LCD Display.

Hope this helps anyone!
a b V Motherboard
August 14, 2008 12:05:11 PM

...am I the only person here who has NOT experianced a crash while on a 790i platform?
Related resources
August 15, 2008 2:09:53 AM

Well, your the first that I've heard of.

And I'll hope for you that you don't experience these issues like we have. It's really a pain. But now I've fixed it, because of the changes I did.

Could you do me a favor, and post your hardware specifications? Maybe you have something different, which on my PC, is the source of all the issues. An Anti-crash card maybe? Or not...
August 20, 2008 12:00:13 AM

I have an EVGA 790i Ultra...and I've had very few problems....I guess I'm one of the lucky ones.


CPU: E8400

RAM: CORSAIR XMS3 DHX 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)

HDD: 2 X Seagate 500 Gb SATA

VGA: 2 X PNY 9600GT SLI

The first thing I did after everything was running stable....(which it did run stable fresh out of the box)...I Linked and Synced my FSB and Memory....that put my E8400 up to 3.6 then I started upping the FSB got my RAM up to 1700 and my CPU to 3.8. I tried to push the CPU to 4GHz but I started getting artifacts......3.8Ghz stable without adjusting voltages...I'm pretty happy with that, but I may take a look at these settings you posted.
November 12, 2008 8:37:56 AM

I have a zotac 790i supreme. I was also having the same problem that my comp would freeze randomly. i changed the memory voltage from 1.5 to 1.7 it has been working ever since.
a b V Motherboard
November 12, 2008 11:12:29 AM

Makes senes, a DDR3 is meant to run at around 1.6-1.7 Volts anyway.
January 8, 2009 11:35:28 PM

I have the same problem I have the XFX 790i Ultra SLI and i did everything you said (except from the timings as you said that we can forget about it.
My CPU needs 1.36250V (Intel Q9650), but when i put 1.36250 the bios says (after save and exit) that the current value is 1.32V :S)

Should I increase the CPU FSB V???? my current value is 1.1 (AUTO)

My ram (as the specification says) needs 1.8250 and i use that.

THANKS :) 
I have Linked Click mode, memory ratio Sync

The freeze happened again today while i was plaing UT3 with the new nvidia drivers 181.25 :S Maybe is because of the CPU V :S I don't know. HELP PLEASE
January 8, 2009 11:55:05 PM

And one more thing apart from the CPU thing that i write you before... I have: CPU SPEED SPECTRUM : CENTER SPREAD HT SPREAD SPECTRUM : DISABLED PCiE SPREAD PSCTRUM: DISABLED PCIe SPREAD SPECTRUM (MCP): AUTO SATA Spread Spectrum: DISABLED Should i put PCIe Spread Spectrum (MCP) and CPU spread spectrum to disabled? I think that the Spread spectrum is for someting about interferences. but if you overclock you should tourn it off. Am i right?
January 19, 2009 2:15:33 AM

... Hi, I have Q9450 and EVGA nForce 790i. After I applied these settings, nothing has changed and my Vista and also XP are getting frozen a few times a day ...
a b V Motherboard
January 19, 2009 11:18:24 AM

xema25 said:
I have the same problem I have the XFX 790i Ultra SLI and i did everything you said (except from the timings as you said that we can forget about it.
My CPU needs 1.36250V (Intel Q9650), but when i put 1.36250 the bios says (after save and exit) that the current value is 1.32V :S)

Should I increase the CPU FSB V???? my current value is 1.1 (AUTO)

My ram (as the specification says) needs 1.8250 and i use that.

THANKS :) 
I have Linked Click mode, memory ratio Sync

The freeze happened again today while i was plaing UT3 with the new nvidia drivers 181.25 :S Maybe is because of the CPU V :S I don't know. HELP PLEASE


I always did find 1.1 for the FSB voltage a bit low, but it never caused any issues for me and my QX9650 (currently at stock...). The CPU voltage does default too low (1.21 I think), but other than that, my 790i has been rock solid stable.

And if your RAM states it needs a certain voltage/timings, manually set the values in the BIOS. Mine needs 1.7 Volts, for example.

I don't know what causes the diffrence in Reported vs. Saved voltages; could just be bad reporting, but saving again usually fixes that issue...

Basically, besides my RAM voltages and CPU voltage, the rest of my BIOS settings are at default, and I havn''t had a single issue. My only freezes were related to my 9800 GX2 and horrific 180 drivers for XP.
February 11, 2009 6:19:42 PM

This is good information. I just jumped back into the PC gaming scene, knowing issues I have had with nvidia drivers in the past (although that definitely does not stop me from buying more nvidia products since ATI is no better). I've been experiencing occasional pink checkerboards on my screen but it is very infrequent so I don't really care. Seems like high end gaming pc's are bug ridden so you just have to take it in stride. I just narrowed down some stuttering issues to my RAM speed and have that pretty much sorted out so it's a pretty nice gaming computer now. My laptop, on the other hand, that's an entirely different story... From dell shipped with vista basic, vista is a nightmare on that system. I just installed XP and it alleviated all of the problems. Never had problems with Vista on an old P4 Northwood desktop system.
a b V Motherboard
February 11, 2009 7:07:48 PM

Mines rock solid stable. Sounds like a BIOS update or overheating to me. All my issues have been on the software end of things, hardwares been fine.
February 21, 2009 9:07:48 PM

Well I fixed my freezing, stuttering, and pink checkerboards. I just installed driver version 178.24 and kept the drivers and bios that the motherboard shipped with. It is very stable. Now halflife2 deathmatch on the other hand, that's another story. But i have narrowed that down to it being the developer's fault since most times it crashes on me it crashes on everyone else that is playing on the same server. One guy I like to game with has an AMD system so his computer is totally different from mine.
March 4, 2009 8:24:16 PM

I Have The EVGA 790I Ultrasli (unmodded), Bios P07, Running 4GB Patriot Memory At 2000MHZ In The Black Slots. My FSB Is Set to 1333 And My Cpu Multi Is 10x (QX6850 Quad Core Extreme)
I Had Some Trouble For About 2 Days With This Board And Memory But This Is What I Did And I Am Running 100 Percent Stable With Vista Ultimate 64Bit.

Make Sure Your Memory Sticks Match. (same revision, batch, voltages....etc) It's Best To Purchase Memory Packaged Together In Pairs And Not Separate. If You Have Un-matched Memory Sticks Forget About Dual Channel Configuration With Any Sort Of Memory, FSB Or CPU Overclock.
Also, These 790I Reference Design Boards Are Not Guranteed To Run Anything Over Two Sticks Of Memory At 2000MHZ. Black Slot Population Is Recommended For Speeds Up To 2000Mhz.

Here Is How I Did It:

Memory settings:
set epp to auto.
set fsb mem ratio to auto.
set timings to optimal.

Or

set epp to expert.
set fsb mem ratio to unlinked.
enter in the mem frequency manually (2000) or whatever yours is rated to.
set timing to expert at 9-9-9-24 2T or whatever your dimms are rated at.
Leave All of the Bottom Setting To Auto.

I Can Use These Setting Either Way


Voltage Settings:
CPU Voltage Need To Be Set At A Minimum Of The VID (core temp will tell you the vid and stepping of your processor). I Set Mine Up Above The Vid Due To Vdroop and Stability Issues.
DDR Voltage 2.000V or as advertised by manufacturer
SPP 1.4V Minimum With 4gb Memory (2x2) at 2000mhz
MCP 1.55V (up to 1.65vmax) with two or more video cards
FSB 1.25V (no higher than 1.4 for 65nm cpu or 1.3 for 45nm cpu)

PCIE slots 1,2,3 at 100mhz
mch at 200MHZ
all Gtl ref voltages +05mv
disable all spread spectrums
disable all cpu features except execute disable bit and maybe virtualization technology unless you have a program that uses it.

Save Changes And Then Test With Memtest Version 2.11 For At Least One Pass.

Test With Prime95 Version 25.8 Or Higher For At Least One Hour with No Errors.

This Should Get Anyone Going Stable Without Any CPU Or FSB Overclock Assuming All Conditions With Memory Are Met.
I Use Only Nvidia Products And Have For A Long Time. They Are Quircky But When They Work They Work Awesome, But Haha, When They Break They Are Broke...LOL
I Am Having No Issues Whatsoever With The Evga 790I Ultra Or The Patriot 2000MHZ Memory

My Boss Has The XFX Version Of This Board And A Q9550 With The Same Memory. I Set His Pc Up This Exact Same Way. Totally Rock Solid Stable.

Just So You Know Bios P07 Is Far More Stable Than P08 And That's Not Just My Opinion.
May 28, 2009 8:33:06 AM

Just wanna say thanks lads! I was about 3 seconds away from dropping my rig off the balcony until I found this thread. I took Lord_Hades advice and flashed back to P07 bios and then made all the advised voltage changes and bingo! Rock f*$#ing solid!!

I'll post back with results once I've clocked the arse off this thing.

Thanks again fellas! You guys rock
a b V Motherboard
May 28, 2009 1:35:26 PM

Agreed with above; extra voltage, plus a 1:1 FSB-RAM ratio seems to help stability. (I became unstable since my first post...). I still use Center Spread for the CPU though.

I did the following:
Linked FSB-RAM (Resulted in 9.5 multi)
Optimal RAM settings (Resulted in Underclocked 1333 RAM with tighter timings)
Increased voltages as follows:
CPU: ~1.35V
DDR: 1.85V (From 1.7V spec)
SPP 1.4V
MCP 1.55V
FSB 1.2V

Notice how the voltages match what the poster two above used (FSB .05 lower, and lower RAM voltage).

Also, Speedstep Disabled.

I made no other changes to BIOS settings, and went from a crash a day to rock solid stable.
May 28, 2009 11:24:54 PM

Don't know if it's just my bad luck but Vista service pack 2 seems to have created a few dramas...just installed it last night and haven't been able to get into windows since. System hangs either on the screen with windows orb or the welcome screen, both appear to have some sort of graphical artifacts that appear as a small line of grey blocks...maybe part of a window or something?? Anyone else get this by any chance?

Oh, also some of the voltages seem to keep resetting back to auto, I've changed them a few times now but still seem to reset. I might try flashing to P08 again and see if that changes anything?

I'm on an XFX board by the way.
June 10, 2009 8:04:50 PM

if i make overclocking,how long the llifespan of my board 790i
June 18, 2009 12:06:15 PM

Lord_Hades said:
I Have The EVGA 790I Ultrasli (unmodded), Bios P07, Running 4GB Patriot Memory At 2000MHZ In The Black Slots. My FSB Is Set to 1333 And My Cpu Multi Is 10x (QX6850 Quad Core Extreme)
I Had Some Trouble For About 2 Days With This Board And Memory But This Is What I Did And I Am Running 100 Percent Stable With Vista Ultimate 64Bit.

Make Sure Your Memory Sticks Match. (same revision, batch, voltages....etc) It's Best To Purchase Memory Packaged Together In Pairs And Not Separate. If You Have Un-matched Memory Sticks Forget About Dual Channel Configuration With Any Sort Of Memory, FSB Or CPU Overclock.
Also, These 790I Reference Design Boards Are Not Guranteed To Run Anything Over Two Sticks Of Memory At 2000MHZ. Black Slot Population Is Recommended For Speeds Up To 2000Mhz.

Here Is How I Did It:

Memory settings:
set epp to auto.
set fsb mem ratio to auto.
set timings to optimal.

Or

set epp to expert.
set fsb mem ratio to unlinked.
enter in the mem frequency manually (2000) or whatever yours is rated to.
set timing to expert at 9-9-9-24 2T or whatever your dimms are rated at.
Leave All of the Bottom Setting To Auto.

I Can Use These Setting Either Way


Voltage Settings:
CPU Voltage Need To Be Set At A Minimum Of The VID (core temp will tell you the vid and stepping of your processor). I Set Mine Up Above The Vid Due To Vdroop and Stability Issues.
DDR Voltage 2.000V or as advertised by manufacturer
SPP 1.4V Minimum With 4gb Memory (2x2) at 2000mhz
MCP 1.55V (up to 1.65vmax) with two or more video cards
FSB 1.25V (no higher than 1.4 for 65nm cpu or 1.3 for 45nm cpu)

PCIE slots 1,2,3 at 100mhz
mch at 200MHZ
all Gtl ref voltages +05mv
disable all spread spectrums
disable all cpu features except execute disable bit and maybe virtualization technology unless you have a program that uses it.

Save Changes And Then Test With Memtest Version 2.11 For At Least One Pass.

Test With Prime95 Version 25.8 Or Higher For At Least One Hour with No Errors.

This Should Get Anyone Going Stable Without Any CPU Or FSB Overclock Assuming All Conditions With Memory Are Met.
I Use Only Nvidia Products And Have For A Long Time. They Are Quircky But When They Work They Work Awesome, But Haha, When They Break They Are Broke...LOL
I Am Having No Issues Whatsoever With The Evga 790I Ultra Or The Patriot 2000MHZ Memory

My Boss Has The XFX Version Of This Board And A Q9550 With The Same Memory. I Set His Pc Up This Exact Same Way. Totally Rock Solid Stable.

Just So You Know Bios P07 Is Far More Stable Than P08 And That's Not Just My Opinion.


Thanks, so far my system has not crashed, i have the xfx 790i ultra and Q9550 with 2x2GB corsair 1333 (9-9-9-24) was not sure about the 2t, then googled it and found it was 2t not 1t like my mobo set by default, i also set the gtlref to +05mv (what effect does this have? but runs ok so far)

I have had several problems with my rig, freezes and screen turing off, then flashed to p08 and system crashed and sometimes didnt boot at all (tried several voltage tweaks but didnt even realize my cpu was getting 1.2v and needs 1.25v like rofl!!), now running p07 with the settings you recommended, and so far no crash.

If my system is now solid stable, then i thank you sincerly, I hope in future you keep posting valuable tips.

I might go do some tests soon (benchmarks) but cbf atm, ill just see if it crashes/freezes or monitor turns off, but have a feeling that it won't, you sound like you know what you are doing and atm my system is booting nice with no freezing etc.

How did you find out about these settings, tried them or read about it?

anyway thanks again, very valuable tips and if its indeed rock solid stable now, then YOU ARE THE MAN!

Cheers,

Abe (Phil van Veen)
Australia
a b V Motherboard
June 18, 2009 2:09:24 PM

^^ Funny, same low voltage happened when I flashed to p08 (1.15V for a QX9650 LOL!). I'm running on p08 now, and my sticks i use are almost identical (pairs are identical).

I'd imagine that all the nforce freezes are related to the same issue; I just wish someone had something a bit more concrete to work with...(A permenant fix?)
July 5, 2009 9:42:59 PM

I had many issues with my EVGA 790i FTW the first couple of months. Worked most of them out though. Running a Q9650 and 4gb OCZ platinum 16000 linked and synched @ 1800mhz giving me a CPU speed of 3.83Ghz. Run Prime95/Memtest stable all day and never have problems with booting. However, I still get the periodic freezes and crashes while gaming and need to ctrl+alt+del to bring up Window's task manager to close program manually and sometimes need to physically restart. If I step the multiplier to 9 @ 1800Mhz fsb it puts my clock at 4.05; however, cannot even get past boot. Tried increasing SPP/MCP voltage; increased FSB voltage and core volts. Temps are not an issue. Possibly try to reflash bios. Anyways, here are my bios settings at current and stable:

BIOS Version: SZ16 (5/4/2009)
**System **
CPU Freq, MHz: 3.833
FSB Reference Clock, MHz: 1800
CPU Multiplier: [8.5]
N/2 Ratio: enabled
PCle x16-1 & 16-2, MHz: [100]
PCle x16-3, MHz: [100]
SPPc->MCP Ref Clock, MHz: [200]
nForce SPP --> nForce MCP: [5X]
nForce SPP c-- nForce MCP: [5X]
**Spread Spectrum**
CPU Spread Spectrum: [Disabled]
HT Spread Spectrum: [Disabled]
PCle Spread Spectrurn(SPP): [Disabled]
PCle Spread Spectrurn(MCP): [Disabled]
SATA Spread Spectrum: [Disabled]
**FSB & Memorv Config**
FSB - Memory Clock Mode: [Linked]
FSB - Memory Ratio:[Sync Mode]
FSB (QDR), MHz: [1800]
Actual FSB (QDR), MHz: ****
x MEM (DDR), MHz: ****
Actual MEM (DDR), MHz: ****
P1: [Enabled]
P2: [Enabled]
**Memory Timing Setting**
Memory Timing Setting: [Expert]
tCL (CAS Latency): 9
tRCD: 9
tRP: 9
tRAS: 29
Command Per Clock: [2T]
** Advanced Memory Settings **
tRRD: [Auto]
tRC: [Auto]
tWR: [Auto]
tWTR: [Auto]
tFAW: [Auto]
tREF: [7.8]
**System Voltages**
Vdroop: [Disabled]
CPU Core: [1.32V]
CPU FSB: [1.25V]
Memory: [1.75]
nForce SPP: [1.42]
nForce MCP: [1.5]
cpu pll: [auto]
GTLVREF Lane 0: [-20]
GTLVREF Lane 1: [-10]
GTLVREF Lane 2: [Auto]
GTLVREF Lane 3: [Auto]
**CPU Configuration**
Limit CPUlD Maxval: Disabled
Intel Speedstep: Disabled
xPPM Mode: [Native]
CPU Thermal Control: [Disabled]
C1E Enhanced Halt State: [Disabled]
Execute Disable Bit: [Disabled]
Virtualization Technology: [Disabled]
CPU Core 0: [Enabled]
CPU Core 1: [Enabled]
CPU Core 2: [Enabled]
CPU Core 3: [Enabled]
Anonymous
a b V Motherboard
July 5, 2009 10:46:46 PM

Hi, I also have an Asus Striker II NSE.

I had to rma 4 before getting one that worked well. It's weird but the 4 broken ones had all shipped with a bios prior to 0805 (you can tell from the small sticker on the mb). And they gad a rog led logo with a yellowish glow.

These 4 boards were weird, mainly you could tell by inconsistent boots. Once it would boot a setup, the It wouldn't oc without adjusting vtt or pll, etc, would beep on ram oc's, etc. And I said 4 rma's as they all eventually popped. /the blue fsb leds failed one day and one wouldnt work anymore, e.g. etc.

This latest board (factory bios 0805) and it had an additional blue advertising sticker on the front of the box lower right side) works rock solid. The rog led is bright white (no dimming of the letters) boots all oc's without voltage adjustment, etc.

Piece of advice, NEVER run the cpu voltage on auto on these boards, it selects a way high voltage. My pi was running at 68 degrees (E8500@3.8 ghz, 1600fsb, 1600ram) at 1.35 volts. Guess what? I downvolted to 1.200v in the bios, still 100% stable at 54c degrees!!! Crysis fully stable at 49c cpu. Idle went down from 59c to 37!!!. An amazing difference when you realise you just have to change the volts from auto to something low. On the E8x00 use core temp to determine your cpu's unique start up voltage (vir) and set the bios at that to start with, then work down. Mine was 1.2375v but it works with the bios at 1.2000v. It might go lower, I'm going to try 1.1000 and maybe 1.0000v.

One thing on the striker II though, the mcp runs hot. Setting the case fa
ns to q-fan (an automatic mode) runs the mcp at 68c!. Setting the fans to duty runs it at 56c.

I havent messed with the other voltages (like mcp, spp, etc) yet. But I'll try to bring them all down to the bare minimum see if that will help the temps. Any one got any advice on the mcp temp on 790i?
July 6, 2009 6:40:31 AM

Gold, you wrote,"But I'll try to bring them all down to the bare minimum see if that will help the temps. Any one got any advice on the mcp temp on 790i?"

If you are in SLI or overclocked much, bringing down the voltage will most likely ensue with more mysterious crashes. Consider that most of the components in your system utilize the MCP; which heats it up initially. I have found that direct airflow onto chips and efficeint airflow throughout chassis along with decnt ambient room temps are the cheapest and easiest way to ascertain your ideal temp. Maybe wedge or attach a small 60/80mm near or on GPU to blow directly through the chip and out the rear. Good luck!

Well, I got the clock for the Q9650 up to 4.175 Ghz and has been running Prime for over an hour.Core voltage @1.32 and baby stepping the volts down unilt I crash, then I would find the sweet spot.

How I did it... FSB @ 1.25; RAM, changed timings slightly 9-9-9-31-2T. I also changed tRC timing from auto(48) to 42 and the tRF from (110) to 85, as well as the tREF to 7.8us instead of 'auto'. Also, I found that for higher memory clocks and tighter timings, as well as higher FSB its needed to enable both P1 and P2 options from auto. I haven't figured out the GTLVREF lanes yet as I have heard so many contradicting statements. But, I reset those as suggested above.

So, I stabilized system with very little heat increase. Thanks to some good(correct) advice above. I have watercooling coming in a month and nothing in chassis(including chipsets) idles above 40c so I may not need it and may save the money for my up-coming build with 1366 socket. However, I pay the price for cool PC temps with 75f room temps ambient (chilly) and a small army of 6x120mm, 2x 220mm, GPU fans and some other small; yet, high- powered fans directed on the hottest components, the MCP and SPP. This produces a bit of noise, so I purchased a longer DVI cable for monitor and put case in a well ventilated area away from my eardrums since I was having no luck with grommets and matting.

Many issues with the MCP/SPP temps. Especially in SLI the MCP is covered by GPU and receives insufficient airflow. One either needs just one super GPU in order not to suffocate MCP with a second, or replacement chipset heatsinks with grease/pads, or the expensive route of watercooling or getting a better quality full tower aluminum chassis to accomodate all of the noise and heat/airflow . SLI not only suffocates the MCP, but the MCP's heat is recycled through GPU fans rendering unnecessary heat accumulation. One needs DIRECT airflow onto these chips for sufficient cooling. Any questions about my rig from a similar set-up, just simply ask and I will get you going best I can. I for one do not enjoy the bashing of my head on the wall for days:) .
a b V Motherboard
July 6, 2009 9:11:26 AM

One definite problem can be attributed to setting the DDR3 slot voltage manually and the actual M/B DDR3 Voltage output being higher than you set it, ASUS M/Bs are inherently bad about doing that.

For example my ASUS Striker II Extreme when I manually set my DDR3 voltage to 1.9V, it was actually 1.98V causing all kinds of problems, I reset my manual setting to 1.82V and attained a 1.9V actual and the memory hasn't given any more problems.

Some memory modules can operate at higher voltages with no bad results and some just cannot go past their rated voltage specs without producing errors.

Your 790i M/Bs DDR3 actual output voltage may very well be the same as your manual setting but ASUS is not, so this is at least something to check on your setup, no matter what brand of M/B you're running.
July 24, 2009 3:38:57 AM

I'm having all sorts of problems OCing. I started with an Asus p5B prem vista ed., I recently upgraded to the evga 790i Ultra. Speaking of, I should throw out my specs:

EVGA 790i Ultra SLI
Q6600@ 2.4 (stock)
OCZ Reaper DDR3 rated @ 1600
2 EVGA 9800 GTX + (one superclocked, one std)
Vista Home Prem 32

I've tried similar settings from a few posts I've found, it sounds as if many people can get up to 3.0Ghz. I'd like to hit 3.4, but I would settle for 3.0. I can get it to post and load into windows but then it wants to freeze on me. I did a system restore due to that, even with defaulting the bios the problem continued. That lead me to believe there was a problem with some extra Nvidia physX crap I was playing around with. I restored to the point right before that and it works fine now. I guess my first plan of action will be to attempt to reach that 3.0 point again, I made it once but it wasn't very stable. If I can boot in and run I must be close. Plus, that will tell me if my OCing was playing a part in the freezing or if it was the garbage I installed.

I'm not sure about the hardware, particularily the ram choice. If anybody can verify it's validity I'd appreciate it. I know I'm not offering much information now, but I figure I need to try and get to that semi-stable 3.0 first and if there's a known mismatch with my hardware it'd be nice to try and find out before wasting a bunch of ya'lls time! XD Of course, in the mean time, I'll try and follow along with what others have done here. I could be one of the unlucky ones with that q6600, it has g0 stepping, but not all processors are created to OC equally. :( 
September 7, 2009 6:11:11 PM

hi guys, I have :

xfx nforce 790i sli ultra (*** board)
2 x 2gb ocz 1800 ddr3 sli ready
320gb samsung sata
ati 4870 1gb gddr5

I am using the latest drivers :

15.35 nforce chipset
9.8 ati catalyst

my computer was freezes lots of times per day and I tried lots of bios configurations, but the first post gived me some clues and I think that my problem was resolved too.

I made the same modifications as he did and altered all voltages increasing 0.05 or 0.1 in all itens, like cpu, fsb , npc , spc, etc , just the memory I put 1.725 that is just a little bit after 1.7v.

Until now my computer didn´t freeze anymore, and the performance is quite good.

I just wanna know what he drinks , because I wanna drink it too.

I am computer technician and could not solve this problem alone.

Thanks to you all, and I hope that I helped someone too.

Finally , I know that my english is very bad ok.
October 28, 2009 1:11:21 PM

@Lord_Hades

Dude, I am forever grateful for your post. I run a small business out of my garage building custom PC's. For the first time I am building a system for a customer that has an EVGA 790i MB and until your post I was starting to get a migraine. It came, out-of-box, with the P08 BIOS. If that wasn't enough, stepping down to P07 and P06 didn't solve it. Your list of memory voltages, timings, and especially the Black-slot DIMM recommendation did the trick! Ended up on P07 with your settings, ran prime95 and OCCT tests twice successfully. I OC'ed it to 3.6ghz (from 3.0ghz E8400) and so far so good. I have installed literally hundreds of boards but like I said this was my first dealings with a 790i. Again, I greatly appreciate your post.

Take care!
Connacht (Cliff)
December 4, 2009 6:00:29 PM

Hello All,

I also have an EVGA 790i Ultra P09 Bios was using P07. I run a Q9550 with a Prolimatech Megashadow, 2 slipstream fans in a push/pull setup and Patriot PC16000 2000MHz memory 4Gbs in the black slots Linked and in Sync Mode. I have used timings of 8-8-8-22 for ever up to a 4.22GHz clock and want to increase and get to 4.3Ghz for personal etification and because I have been told it can't be done on air.
I can post @ 4.3 and even boot to Windows (using Win 7 64Bit) but cannot get to the desktop it just reboots. I have tried loosening the timings to 9-9-9-24 and it either posts or I get the long beep. :fou:  Has anyone run the memory above 2000MHz and what timings have been used?
Thanks for any info.
December 9, 2009 7:11:56 PM

Thanks crillegs :bounce: 
a b V Motherboard
December 10, 2009 10:55:28 AM

luisold said:
hi guys, I have :

xfx nforce 790i sli ultra (*** board)
2 x 2gb ocz 1800 ddr3 sli ready
320gb samsung sata
ati 4870 1gb gddr5

I am using the latest drivers :

15.35 nforce chipset
9.8 ati catalyst

my computer was freezes lots of times per day and I tried lots of bios configurations, but the first post gived me some clues and I think that my problem was resolved too.

I made the same modifications as he did and altered all voltages increasing 0.05 or 0.1 in all itens, like cpu, fsb , npc , spc, etc , just the memory I put 1.725 that is just a little bit after 1.7v.

Until now my computer didn´t freeze anymore, and the performance is quite good.

I just wanna know what he drinks , because I wanna drink it too.

I am computer technician and could not solve this problem alone.

Thanks to you all, and I hope that I helped someone too.

Finally , I know that my english is very bad ok.


I hear ya on that. Mines mostly stable, I've had 3 lockups in 6 months (acceptable). I plan to start OC'ing via FSB and see if stability remains as long as 1:1 is held. But for the most part, voltage increases + 1:1 FSB-RAM ratio seems to do the most good.
Anonymous
a b V Motherboard
December 14, 2009 8:55:00 PM

Hi guys, now it's 4 days that i've tried to fix this damn problem about freeze and i still have it.

My component list:

Motherboard: XFX nForce 790i Ultra Sli
CPU: Intel 2 Quad core Q9650
Memory Ram: OCZ3G18002G (2x2)
GPU: Sparkle Geforce GTX 275
Power Supply: 700w
HDD: WDC WD 15 00 HLFS (10000 Rpm 150 GB) <--- this is the OS hard disk and i have other 2 that contain files....

Now... the freeze start when i've changed my Cpu Intel 2 Duo core e8600 to Intel 2 Quad core q9650 the freeze it's just like your PLZ HELPPPPPPPPpp i'm really pissed off about this problem guys... really i don't wanna change cpu or motherboard becuase i like it boths and because i've read that some1 have succeed to fix this kind of issue... i've noticed that many of this issue it's combined about this 2 pieces nForce 790i Ultra sli and a Quad core what i have to do :sweat: 
February 12, 2010 5:17:57 PM

Hi everbody,

I have these components:

Q9450
Zotac NForce 790i Supreme
Kingston Hyperx DDR3 2000MHz 2x2GB CL9
Zotac GTX295
Cooler Master Real Power Pro 1000W

Running Win7 Pro x86 with P07 BIOS

I've been having some problems with my RAM settings. I cannot make the system stable. It can sometimes boot, but sometimes cannot. I tried every settings above that you said makes the system stable but could not make mine :) 

Any help is appreciated.
March 14, 2010 1:01:46 AM

Hi fellow 790i guys
March 14, 2010 1:08:06 AM

Hi fellow 790i guys
I ved put my head threw walls broke toes on the bed and pulled what little bit of hair i had left in my head with the frezzing stuff. what u guys say about uping volts and timmings sound like might work i know when i uped my timmings the frezzing seemed to not happen as offten. here is what im runnig

EVGA 790i
Q8200
Mushkin blackline ram 7-7-7-20 timmings
8800 ultra video
seagate 1TB hard drive
850 watt corsair


now i have bought and change power supplie and ram but still frezzes i have a video card comiing but it has to be a hardware issue or bois i think

i will try upping the volts on the ram and cpu and i will post back with results..

Fingers Crossed
March 14, 2010 10:35:11 AM

I sold my mobo and CPU, and moved to the new architecture--> the problem is solved :sol: 
March 17, 2010 11:08:26 AM

Hi I really need help, I've been strugeling since last year september pls pls.

my Rig:

Motherboard: xfx 790i ultra sli

Ram: corsair xms3 4x 1g

processer: intel(R) core(TM2) Qaud Q6600 2.4ghz

Graphics card: xfx 9800 gx2 black edition

harddrive: 2x 500gb

powersupply: Vantec ioN2+AS 700watt

I exprienced ramdom freezes, while playing games, surfing the net or just doing nothing.
I tried some of the advice you guys posted on this site but still no cigar.

You guys hav no idee how annoying it is, I tried taking my rig back for a refund, but they find nothing wrong with the hardware.

please help I'm on the vurge of using a sleg hammer on my rig.
please I'm going insain.


March 18, 2010 4:20:32 PM

SUCCESS! After almost two years (May 2008) I have my (once) beastly machine working. :pt1cable: 

The solution, in the end, was a very simple one that eluded me for quite a (very long) while.

My specs:
Motherboard: XFX 790i Ultra SLI
Processor: Intel Core 2 Quad Q9300 2.5GHz
RAM: Patriot DDR3 PC3-10666 1333 4x2GB
Graphics: 2x NVIDIA GeForce 9600GT
PSU: Enermax Galaxy 1000W
HD: 3x 500GB WD SATA 3gb/s

I tried all of the solutions in this thread, to no avail. I set everything manually, changed voltages, tweaked settings, unmount graphics cards, ran memory tests, booted from live CDs (still froze!) and more. The computer would randomly freeze up - no blue screen, no error message, just a total lock up - and would require a hard reset. Like many have said, it would happen randomly. Sometimes even while the computer was asleep with the screen saver on.

In the end the only issue was MEMORY TIMING. Nothing else mattered. It was not the CPU, graphics card, RAID device or even RAM speeds - just the timing. You need to find the memory timing and voltage specs for your specific RAM. In many cases it is something like 7-7-7-9 and the voltage is 1.5V or higher. In my case there was a part to this issue I wasn't seeing before: when you find the correct memory timing, it is only appropriate for ONE KIT. In most cases that means the timing and voltage settings will only work if you use TWO sticks, NOT FOUR.

After over a hundred hours of troubleshooting, scouring message boards and running tests, the solution was setting a few variables in BIOS and only using two sticks of RAM (placed in the black memory slots, not the grey ones). After that I ran Prime95, walked away for a few hours and came back to find it running happily. Problem fixed!

Oh, and the settings for me were:

FSB Clock mode: Linked
Memory Ratio: Sync mode
tCL: 7
tRCD: 7
tRP: 7
tRAS: 9

Command per clock: 2T

Memory Voltage: 1.75V

Everything else was set to default, but you can probably tweak it once you know things are working :) 

Good luck!
March 18, 2010 10:23:56 PM

hey everything is stable so far.

i enjoy playing games until i almost fall asleep for once lol!

well i formated and started from the begining.

went to my bios.

ajusted my fsb clock mode: to linked
memory Ratio: sync mode
timming:9-9-9-24 T2
memory voltage: 1.7v

and so far so good!!!

ill see if it will last until nexted week and if it does ill post, what iv done

just wish i knew about this site much soner.

thanks alot buddie
Anonymous
a b V Motherboard
March 20, 2010 3:03:20 AM

I've had a lot of problems with my PC freezing over the last several of months. At first, it only froze once every few days, usually while gaming. Then, it got to the point where it was freezing several times a day. Next, my internet connection would fail every 5 minutes. I would have to reset the gateway constantly. I reinstalled my OS several times to no avail. It was happening with both Win XP and Win7. I could not find any pattern to the problem. Finally, I stripped everything out of my case, and reinstalled each component, after my PC failed to boot. It would get stuck at "verifying dmi data" and go no further. I eventually discovered that the problem has something to do with USB. I had to unplug my USB hub and MP3 player to finally get the darn PC to work. My USB keyboard/mouse does not cause any problems. I thought maybe it was a bad port, but it doesn't matter which port I am plugged into. I have left my hub and Sansa Fuze MP3 player unplugged for a week now. Everything is running smooth, like butter!


MOBO: XFX 790i Ultra
BIOS P06 w/default settings. . . going back to P09 to test shortly
CPU: Q6600 2.4ghz
RAM: 2 x 1024 Corsair DDR3 XMS3 1333
GPU: 2 x EVGA 8800 GTS 512 SLI
Anonymous
a b V Motherboard
November 20, 2010 10:59:36 PM

I had a lot of issues in my pc (xfx 790i ultra, ocz 1333 2x2gb, geforce 9800 gx2, intel 9450 2 quad core) i setted the timing and other memory stuff but the freezes going on... I read that my cpu works to 1.25 Mhz and the bios was setted to 1.1.
Then i setted it to 1.25 and i haven't any freeze by a week, the pc is on 24h/24
:)  hope that this will help someone
a b V Motherboard
January 7, 2011 1:19:57 PM

Not to kick a dead horse, but guess what my 790i started to do again?

Was going to test looser memory latency next; either way, its probably a good thing NVIDIA doesn't make mobos anymore...
May 9, 2011 4:43:10 AM

hey gues im having the same problem, i have a 790i board and q9550 cpu everytime i play games or watch a movie it freezes up! i tried to reinstall win7 32, same problems than i upgrated to 64bit same thing, my bios setting are to default.. and im new to these things can someone help me out please

thanks
March 2, 2012 3:41:15 AM

Guys, I need some help with this motherboard, Asus Striker ii Extreme, Intel Socket 775. The motherboard is blocking and freezing out of nowhere. It happens 2 to 3 times a day.

PC Specifications,

Graphics card - BFG GTX 295,
PSU - Thermaltake 1500Watt
OS - Windows 7 x64 BIT
HD - 160GB Samsung
RAM -Corsair TR3X6G1333C9 1.50v ver8.1 9-9-9-24 1333Mhz 2048MB6GB (3x2GB)



The system blocks and makes a strange sound. Two days ago I have removed one stick ram. Now it has only 4 GB and it is working fine. I am not having and blocking anymore. I want all 6 GBS to be used but from what I can see it's the ram that is blocking it. I think this board can't accept more than 4 GB and yet it says it can support up to 8 GB.

I have not overclocked the system at all. Everything is at default settings.

Do you guys think I could change some settings in bios so that it can accept all 6 GB of ram? Maybe some voltage can cause the system to block?

Please, if you have any help then do let me know.

Thank you





crillegs said:
Hi Tweakers!

As sóme may have noticed the 790i chipset have had a serious issue, causing the system to freeze at random times, mostly when playing medias or gaming . Well I've have experienced the same problem, and searched the forums for several hours, untill I tonight, a little drunk after going to a party, have found the answer to this problem. It made me so glad that I wanted to post it on this forum, as I've received so much help myself from you guys. First I searched for Asus Striker II Extreme freezes, but it seemed that the issue are generally for all 790i chipsets. So finally I found some guys with EVGA motherboards, who made a kind of a blog on their solution to the issue.

Some of the changes proved very effective, but some also seemed to be only optional, as they never found out if it actually helped. This is the changes:

Increase Vdimm: fx. 1.7-1.8v
Increase NB/SPP Voltage: fx. 1.3-1.35v
Increase SB/MCP Voltage: fx. 1.5-1.55v
Increase tREF: fx. 7.7-7.8uS (Very effective!)

Eventually:

FSB Clock mode: Linked
Memory Ratio: Sync mode
(I don't think this can be chosen on the ASUS Striker II Extreme, but should help for EVGA 790i cards):
tCL (CAS Latency): Auto(7)
tRCD: Auto(7)
tRP: Auto(7)
tRAS: Auto(7)

At last, if you have a Q9450 processor like I do, they also said it would hardlock when the voltage goes below 1.2v, so they recommended setting this to 1.265v, as this would prevent it from going below 1.2v under load.

Hope this will correct your problem.

!