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Overclocking core i7 920 help please

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a b à CPUs
a b K Overclocking
March 10, 2009 9:22:08 AM

motherboard: Gigabyte GA-EX58-EXTREME Motherboard
cpu: core i7 920 @ 3.4ghz
ram: OCZ DDR3 PC3-15000 Platinum 6x2GB OCZ3P1866C9LV6GK 1866mhz 9-9-9-28
cooler: swiftech water cooling system
Gpu: gigabyte 295
Power supply: aptevia 1100w
Case: antec 1200

Someone please help i cannot get my system to run over 3.4ghz is there something special i need to do?? im rather new to overclocking...i want to aim for around 4ghz with my ram as fast as i can....someone please help with bios settings and voltages qpi and uni core speeds and frequency's!! thanku in advance all

More about : overclocking core 920

March 10, 2009 12:41:23 PM

To get mine stable at 3.8 i had to raise the PLL and QPI voltage not just the Vcore start with 1.4 vcore and work qpi and pll voltages up +.02 at a time till stable then back Vcore down step at a time till unstabe, then back up one and try it. At auto my motheboard would not set correct voltages for the overclock. some will some will not.

my setup is
MSI platinum non sli
i7 920
zalman 9700 cooler < almost to small
3gb gskill ddr3 1333 7-7-7-18 at 1524 8-8-8-20 @ 1.6v
vcore 1.38
PLL 1.9
QPI 1.35
all else on AUTO
temp in high 50's prime 95 hope thats ok, I will find out, haha.
March 10, 2009 1:17:16 PM

1st I would see about just getting you cpu over 4gig. I would set mem to 8x uncore to 16x qpi to the low setting (which I believe is 4.8) vcore to around 1.3 turbo on vtt to 1.26 mem voltage to 1.65 and turn HT off.
With those settings I would guess you should have no trouble getting over 4 gigs with a bclock in the 190 to 200 area. If you have trouble you can try to change the multi to 19 and see what bclock you can get that way to see which mutli your chip seems to like best.

After that you can start with your mem (may need to up the vtt for that and maybe the mem voltage also) buy upping the ratio and the uncore multi also (needs to be a minimum of 2:1 between uncore and memory) also I would lower the cpu multi durring this to keep cpu stability out of the equation.

Once you have found these limits you will have a good idea on your max settings and can look for your max cpu with HT on (knowing what settings are max and work best for your setup see what has to be done to get close with HT on) you may only need a bit more vcore (I would try to stay under 1.40) or you may need to drop the multi or bclock down until you get stable with these settings.

From that point it is mostly just tweaking to get the max out of those setting like best mem ratio/speed with timings qpi speed all with keeping voltages as low as possible and being stable.

The main voltages that make the most difference are vtt (which can be listed as QPI/Vtt) mainly needed with high mem speeds your vcore and vdimm. I have found very little help from raising any of the other voltages so I just leave them at default. vtt and mem voltages have to stay under 0.5v difference and depending on each setup .2~.4 usually seems best.

For my 24/7 setting this is what I have come to use.

bclock 195
Turbo enabled
HT off (I use no software that uses more than 2 threads and don't need the extra heat of aprox 12 degrees under load that it brings)
vcore at auto + 6%
all power saving settings turned on
vdrop/droop allowed
8x 16x for mem and uncore settings

I have tested these setting stable up to 198 bclock and have lowered to 195 as a little margin since just one crash could cost a few hours of work to be wasted.

With my settings I get an idle voltage as low as 1.14 (it varies but usually at 1.15) and load of 1.312 which helps with heat for 24/7 operation.

I hope this helps and since we have different MBs the terminology of the setting can be different but will do the same thing.

Idle


Load
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March 10, 2009 5:36:05 PM

Actually it doesn't seem any harder than getting the most out of a yorky. You still have to worry about voltages for vtt NB and gtl ref to get most out of one and there is plenty of trial and error involved there too and really needed the right board also since many didn't work well with the 45nm quads.

Over all I didn't find it much harder than my 8400 to get to my 24/7 settings.
March 10, 2009 6:41:17 PM

Quote:
The I7 is easier to overclock then the C2D. Get some 1600 ram and set the Vcore t 1.4v and it boots right up. Mine boots to 3.8ghz with everything on AUTO.

If you're having trouble OCing. Look into a better heatsink


He has ddr 1866 mem and water cooling so I would guess that neither is his problem.
March 10, 2009 7:33:50 PM

+1 Ancient_1
under cpu options disable all power saving options. for your mb should disable all but the first 3 in the list (i left ht on for now but Ancient_1 makes since about not needing more than 2 cores) if you leave turbo enabled with all the powersaving stuff turned off you'll get a +1 to your multplier when you boot 21 instead of 20. also make sure you have prime 95, cpuz, realtemp and memtest86+ ver 2.10(2.11 would freeze my system)

edit: if your not using a program designed for more than 4 cores lose ht
thanks Ancient_1

Core i7 920 @ 3.78 ghz 1.3v 45 idle/75 load wo/ht 3.99ghz 1.35v load 73
Gigabyte EX58-UD4P
coolit Domino on high
Antec 1200
OCZ 3P1600V2Z 6 gb @ 1440 7-7-7-24-1t 1.64v wo/ht 1520 7-7-7-24-1t
Asus 4870x2 stock(for now)
2 WD 640 black in raid 0
1 WD 1Tb black

March 16, 2009 12:16:13 PM

I have mine stable at 3.82 and mem 1603. My vcore is at 1.325. I used 19x and 200 mhz which gives me better mem than 20x and 190mhz. Temps idle at 38c for both MB and CPU. Yes... turn turbo off! I hope this helps:
CPU Ratio 19.0
BCLK 200
PCIE Freq 100
DRAM Freq 1603
UCLK Freq 3208
QPI Link 7218 MT/S

cpu voltage 1.325
PPL 1.88
QPI/Dram 1.325
IOH Voltage 1.10
IOH PCIE 1.50
ICH Voltage 1.20
ICH PCIE 1.50
Dram Voltage 1.64

March 19, 2009 11:31:17 AM

Thank you Texan for actually listing all your settings!!! I am a total nuub with OC'ing and was able to find all these settings and duplicate this with no problems. Looks like we have similiar mb's.
I do however have a possible problem or misinterpretation.

In CPU-Z on the memory tab it shows my memory as 800 mhz? It is however showing 1603mhz during boot. I also checked system info and its showing there as 1.1 mhz? I didn't do anything other than the numbers you posted and didn't miss any, but am I suppose to do something more or is my ram showing correctly during boot and just wrong in CPU-Z? Or am I just reading it wrong? Is Command rate x 2 meaning 800x2=1600?

Exact cpuz info:

Type: DDR3
Channel# Triple
NB Frequency: 3200 mhz
DRAM Frequency: 800mhz
FSB: 2:8
CAS# Latency (CL): 9 clocks
RAS# to CAS# Delay (tRCD): 9 clocks
RAS# Precharge (tRP): 9 clocks
Cycle Time (tRAS): 24 clocks
Command Rate (CR) 2T


I have the i7 920 on a ASUS P6T6 WS Revolution with CORSAIR TR3X6G1600C8D Ram.
Thanks to anyone that can help edjucate me on this!

March 19, 2009 1:01:05 PM

Yes in CPUz it should show as 800. It's (x2). The 1.1 mhz I don't understand that? Are you talking about Vista performance area? If so you need to rerun the performance tab.
March 19, 2009 6:54:36 PM

Not in the Vista performance area but in System info (Start > Accessories > System Tools > System info).
It shows as the 1.1 in that as well as any benchmark software such as 3DMark and PCMark since it gathers system info thru the same means.
I ran the system hard since the OC and things are still super stable and performance is insane.
March 20, 2009 1:17:16 AM

Um if you want to go higher you'll need water. I was able to get a 940 to 4.6ghz but I am using water.
March 30, 2009 4:57:20 AM

Ancient_1 said:
Actually it doesn't seem any harder than getting the most out of a yorky. You still have to worry about voltages for vtt NB and gtl ref to get most out of one and there is plenty of trial and error involved there too and really needed the right board also since many didn't work well with the 45nm quads.

Over all I didn't find it much harder than my 8400 to get to my 24/7 settings.


Hello from Oregon, do you know anyone who would help me overclock my i7 remotely? Is that even possible, I only am asking you because you seem to know alot about it, I am admittedly a newbie. I have a 730xps dell with the 920 i7 Intel.
I am afraid of hurting the computer if i do it on my own. Any assistance is hugely appreciated, thank you for a response.
Respectfully Brian Leupold www.leupold.com ps my family makes optics, 100 yrs old and USA made, I can get you a family discount ;) 
Peace
March 31, 2009 7:03:49 PM

Get a huge ass Zalman water cooling unit and have a field day.
April 11, 2009 8:02:56 PM

I want to thank the community for providing so much "free" help to overclock the i7 920.
After many hours of fiddling, I got my second build i7 920 to do 3.88ghz comfortably with core temps below 86c.

BUILD

Case:Antec300 with side 120mm fan and 1 front 120mm fan installed both spinning
below 1450.

CPU: Core i7 920 (rev:C0/C1 stepping:4)
Motherboard: Asus P6T
Cooler: Scythe Mugen 2
Mem: OCZ3G1600LV6K 6gb PC3-12800+ DDR3-1600 Triple Channel
PSU: PC Power & Cooling S75CF 750W
DVD: NEC ND-3520A
Drive: Seagate WD500gb SATA2 16mb
LCD: 24" Sceptre

BIOS SETTINGS

Bclk: 185
CPU Ratio: Left at auto so 21x can kick-in
Stepping and Turbo: Enabled
CPU Volt: 1.325v
CPU PLL: Auto (1.80v)
QPI Volt: 1.35v
Dram Bus Volt: 1.66 (timing set to 8/8/8/24/1T)

STATS

Prime95 ran 8hrs with no errors. Realtemp core temp max at 86c.

I hope this will help set a base reference for those trying to overclock with Asus P6T.

Best,
Vindaloo
April 12, 2009 6:56:46 PM

Those temperatures is really, really high Vindaloo
April 13, 2009 7:11:07 PM

Kjensen said:
Those temperatures is really, really high Vindaloo


Yeah, I know the "full" load temps are a bit high but it idles at 38C. And even during Pinnacle Studio encoding, the core temps using Realtemp never passes 65C.

I ran Vista64 ultimate on Prime95 (Blended) for 8hrs with no errors with HT on and temps maxed out at 86C. The system is rock-solid even with 5 different programs running side-by-side. I've even done multiple installs simulatenously (flightsim X and sisoft lite) without it crashing while running multiple windows of IE with hulu streaming. I know I'm pushing right up against the chip's maximum performance but it seems stable.

The funny thing is that if I push past slightly above 3.9ghz, the system collapses. Increasing vcore, QPI and CPU PLL even exponentially doesn't seem to help much but jacks the temp up insanely. I think I'm pushing right at the edge of this chip with "tolerable" full-load temps. Of course, the room is cool because it's only spring. I can't say that when summer comes around and the room temp shoots up that my system will still be stable. I'll keep my fingers crossed.
April 15, 2009 12:38:43 AM

Kjensen said:
Those temperatures is really, really high Vindaloo


Kjensen is totally right. The temps are way too high. I'll post new settings after doing more tweaking on the overclock. Back to the drawing boards.
a b à CPUs
April 17, 2009 2:27:50 PM

So I take it that my 90C load temps are to high? I am running OCCT 3.0.1 with a large dataset, High priority, and Hyperthreading as dual core enabled. This hits your CPU at 100% across the board. I've run it stable for an hour. At idle my temps are about 55-58C.

But this is using OCCT and monitoring with it as well. What is everyone using to monitor their temps? Because I'm seeing people with 40C idle temps and I didn't even get that at stock speed. the ASUS PC Probe gives me a MUCH lower temp, I take it is using the tcase temp though. Is that what everyone is using? I get confused sometimes with what everyone is going by.
May 17, 2009 12:07:57 AM

No, most people use realtemp or core temp, which are all using temps reported by the cpu, which I think occt does as well. It seems to be an issue with your cooling, what heatsink do you have?
May 17, 2009 1:46:31 AM

My cpu idle temps are 33C but the idle CORE #1 TEMPS ARE 55c.
May 17, 2009 5:38:37 AM

I've Actually seen a Core i7 965 hit 4.4GHz, So I know you can do it.

I heard it hit like 5.8GHz but I didn't see it so I don't really believe it.

Anyway I don't have a i7 so I'll get lost.
May 20, 2009 5:59:56 AM

what batch number is preferred in the 920 and again the 965
June 8, 2009 3:23:46 PM

offsmack said:
Hello from Oregon, do you know anyone who would help me overclock my i7 remotely? Is that even possible, I only am asking you because you seem to know alot about it, I am admittedly a newbie. I have a 730xps dell with the 920 i7 Intel.
I am afraid of hurting the computer if i do it on my own. Any assistance is hugely appreciated, thank you for a response.
Respectfully Brian Leupold www.leupold.com ps my family makes optics, 100 yrs old and USA made, I can get you a family discount ;) 
Peace



Hey Brian

Get in touch buddy please, miss you!!

Ian Molloy
xxxxx
June 17, 2009 5:13:59 AM

hey when i turn off Turbo off my temps went from 40C to 50C what is wrong?
June 19, 2009 9:29:05 AM

Relatively novice OC-er here. Just got my hands on some goodies~

My i7 920 D0 stepping is reaching for 4.4ghz... it's at 4.2 as I type this... on air. I use the Noctua 120mm HSF and an Antec 900v2 case with tons of fans. With two gtx285ftw's packed in there and 4 sata drives its a bit tight.

cpu --Intel Core i7 920 2.66 batch:#3901A240
mobo -- Asus P6T Deluxe v2
cooler -- Noctua NH-U12F 120mm HS/F
memory --Corsair xms3 ddr3 1600 cl7 ram (great ***, fast as hell at cas 7)
boot drive -- G.Skill falcon 128gb ssd
video -- Evga gtx 285 FTW ed. x2 sli

My settings were

blck 200 -> ram @ 1600mhz (7-7-7-21-2T)
multi 21x
vcore 1.37500
*cpu pll auto
qpi/dram 1.37500
dram 1.64

load line calibration > enabled (mobo specific I think)
cpu > 800mV (I think thats what it was)

*(going to try 1.8/1.86/1.9/1.96 on next few boots, I don't really understand what this is and how to set it properly, auto seems to be working alright and I hate myself for saying that)

Hyper-Threading and power saving options disabled, the rest are auto if not mentioned.

It's not "stable" cause I've only had time to run prime95 for a few minutes, but in-place large FFt load temps were at 70/71C (on core #1), and it idles around 43-45C (on core #1). I'm using Core Temp 0.99.4 by the way. Everest reports idle "CPU" to be 34/35C with core #1 at 44C. CPU idle voltage is 1.368v in CPU-Z. It bumps up to 1.376v under load.

I think I got a good chip, it runs very solid at 4.0ghz 1.35vcore/qpi 1.96cpu pll, no HT (haven't tested much yet with HT, working on 4.2ghz stable at the moment.)

Cheers
July 8, 2009 12:37:50 AM

Overclocking my box was pretty easy for the most part, but then again I'm an absolute noob so I could theoretically blow up my box at any moment.

Right now my computer is running at 3.56 ghz with my QPI at 6.4Ghz and my RAM at 1424 or something random like that. (I didn't over clock my ram as I really didnt' notice a huge difference nor do I really need it.)

I know that Quick path sounds high but thats the same speed the new mac Pros run at. so I figure as long as I don't go over that I should be fine.

So far so good my idle temp on my cpu cores (according to speedfan and real temp) are between 32C - 41C (depends on the core, first and 4rth core always run a little high the avereage is around 38C)

And under load my temp really doesn't go above 64, Once I got it to hit 68.

I also have hyperthreading on and my bios has, Normal/Turbo/Extreme for modes... I have mine set to Extreme cuz that's the kinda guy I am. lol

Currently my box scores 9740 on geekbench 32 bit on the windows side and 12250 on the mac side running the 64 bit geekbench.


The main thing is I got really good gear I think. It really makes a huge difference.


I have a gigabyte GA X58 UD5 motherboard which has a big old heat pipe and heat sinks for the main QPI bridge. Core i7 920 of course and 6 gigs of 1600mhz DDR3

I think the magical key to my temps is my case. I got the Cosmos S 1100 with a ridiculous amount of fans lol!

I have 6 120 mm fans, 1 in the cpu cooler and 1 huge ass 250 mm fan on the side of the box.

3 are set to intake and 4 to blow. The entire case is a ventilated mesh so basically it has amazing air pass through.

And the CPU cooler is the thermaltake V1 made entirely of copper and it's really huge. Copper is much more conductive than aluminum so I'm thinking that's the key to my temp success however time will tell.

I have yet to overclock my box to the land of ridiculousness because my work and livelyhood depend on my computer running flawlessly, but I'm sure one of these days I'll take a stab at 4ghz to see what kind of geekbench I can get.


July 8, 2009 1:02:16 AM

Also If you check out tom's Hardware article about core i7 overclocking here are the temps they give:

65-70 = Hot
60-65 = Warm
55-60 = Safe
25-30 = Cool

That runs fairly average. Across the board most average CPUs will have an auto shutoff at 75C to prevent the chip from burning out. I think that's probably a safe baseline for people to follow.

I don't care all too much about the idle temp, just the temp under load. I want my loaded CPU to be 70C or under. That being said like anything else the harder and hotter you run electronics the more you will shorten their lifespan. My recomendation is to play it semi conservative if you want a box that's going to last.

Seriously unless you're doing huge 3D rendering or ridiculously complex floating point calculations in the name of science you're not going to max out all 8 cores of that CPU in practical use. Gaming mainly relies on your Graphics card so if you're looking to be the most badass kid on the deathmatch block then you're better off going dual video cards with SLI or Crossfire. Some newer boards will even let you do 3SLI.

And even if you are running Maya or doing high end video compositing then you want a box that's going to be stable and not have to worry about the cpu burning out in the middle of the night when you're box is doing render passes.

For getting that high geekbench score for bragging rights, blazing your box over 4 ghz is great, but for sustainable use I would say back off the throttle a little, unless of course you're running a liquid cooled box in which case 4 ghz should be a walk in the park lol!





July 10, 2009 6:15:16 PM

Quote:
motherboard: Gigabyte GA-EX58-EXTREME Motherboard
cpu: core i7 920 @ 3.4ghz
ram: OCZ DDR3 PC3-15000 Platinum 6x2GB OCZ3P1866C9LV6GK 1866mhz 9-9-9-28
cooler: swiftech water cooling system
Gpu: gigabyte 295
Power supply: aptevia 1100w
Case: antec 1200

Someone please help i cannot get my system to run over 3.4ghz is there something special i need to do?? im rather new to overclocking...i want to aim for around 4ghz with my ram as fast as i can....someone please help with bios settings and voltages qpi and uni core speeds and frequency's!! thanku in advance all


I had the same problem hwere it wouldn't go past base clock 180. I lowered my cpu multiplier to 12, then got the base clock as high as possible, 206, so I had the correct vtt voltage from that. Then I slowly raised the multiplier back up. Control your variables.
December 2, 2009 4:40:39 PM

Quote:
motherboard: Gigabyte GA-EX58-EXTREME Motherboard
cpu: core i7 920 @ 3.4ghz
ram: OCZ DDR3 PC3-15000 Platinum 6x2GB OCZ3P1866C9LV6GK 1866mhz 9-9-9-28
cooler: swiftech water cooling system
Gpu: gigabyte 295
Power supply: aptevia 1100w
Case: antec 1200


Your running 12gb of ram... I couldn't get my 920 anywhere near stable (+ random crashes at idle) with all 12gb anywhere between 2.66 and 4.0. Even at all stock/auto settings, sometimes clicking a web link would kill it. I had 12gb of the OCZ gold 1600 8-8-8-24. I have heard that the memory controller on the i7 just really doesn't like all of the dimms full. Pulled out half of the ram and I was stable at 3.6 first try, going to try for 4 again after classes are out for the quarter.

Board: Asus P6T SE (note, not a great board for OC, but cheap)
CPU: i7 920 D0 @ 3.6 HT on
Ram: OCZ PC3 12800 Gold
Cooler: Swiftech Water
GPU: GTX 275
PS: Antec TruePower 750
Case: CoolerMaster CM Storm
December 2, 2009 5:16:07 PM

Mine stable at 4011Mhz, 1.23750v, max core temps around 67c-60c :D 
January 21, 2010 7:03:03 PM

Well I guess I fall into the same class of being overheated :) 
860/3.8Ghz , Core 1,2 - 75C , Core 3,4 - 79C (Load on Prime Blended).
I'm still wondering what could be the cause as my idle temps are within the 38 - 40C range. Current Ambient temp = 28C which is hot!

VCore - 1.28V (should i lower this to1.26v ?
CPU PLL - 1.8
Vdimm - 1.66V
CPU Ratio - 2:8 as per CPUZ
BIOS - CPU 19x / DIMM 8X / BCLCK 200

Ive been having it on for the past 12 hours or so with no problems yet.
I'm not worrying too much about this given I'm going to enable back the C states in a couple of hours but its definitely perculiar that such high temps are being seen on my setup though. ANy ideas ?
April 30, 2010 8:01:23 PM

texan1962 said:
I have mine stable at 3.82 and mem 1603. My vcore is at 1.325. I used 19x and 200 mhz which gives me better mem than 20x and 190mhz. Temps idle at 38c for both MB and CPU. Yes... turn turbo off! I hope this helps:
CPU Ratio 19.0
BCLK 200
PCIE Freq 100
DRAM Freq 1603
UCLK Freq 3208
QPI Link 7218 MT/S

cpu voltage 1.325
PPL 1.88
QPI/Dram 1.325
IOH Voltage 1.10
IOH PCIE 1.50
ICH Voltage 1.20
ICH PCIE 1.50
Dram Voltage 1.64


thanks texan1962.... put your settings in and got a stable 3.8 w. 1603. my temps are higher 43-70 min max but game all day no problems i have 12g ram does that make the temps higher. i also have corsairs new cpu water cooler..using push pull but i go out the case not in...think that makes a difference? tia
good job man!
August 12, 2010 6:53:16 AM

I also could use some help.

I've read various guides about oc'ing the i7. I'm a newb. I'm not sure what I am doing wrong, but even the slightest attempt to overclock my i7 920 has ended up in crashes. It won't even boot win7. If anyone can help, here are the relevant pieces of info.

Windows 7
Intel I7 920 2.6ghz
Gigabyte GA-58-UD5
Corsair 550 Powersupply
Corsair 3x2gb 1333 ram (it shows 1066 in bios)
EVGA Geforce GTX 260

I've tried changing the bclk so the speeds would be 2.8, 3.0, and 3.66 ghz, but the system crashes on all attempts.

I've also taken into account that it might be the RAM, but I've manually set it below the 1333 mark, so I know the RAM can handle the OC.

I've also played around with the voltages. For the CPU vcore, I've tried 1.4v, aht e QPI/vtt at 1.51v.

On top of this, I've tried using the "easytune6" that comes with the gigabyte MB utilities. Using this utility, I've tried to oc to 2.80ghz, but still, my system won't get pass the windows startup logo.

Any ideas what I'm doing wrong?

Thank you in advance for any help.
!