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Need help with overclocking Asus 750i - Q6600 at 3.4ghz

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June 14, 2008 7:33:14 PM

Hi Guys, Need some major help here I cant figure out this problem.
Heres the settings I have used.

Bios 0502
FSB - 1512 - Ram 810
Vcore - 1.5
Dram - 2.11
HT - Auto
NB - 1.44
SB - Auto
Enhanced C1E Disabled
LDT Frequency - 5X

With These settings I have passed the Latest Prime95 (25.6) Small FFT Tortue Test with 13 Hours and 23 minutes no Errors.
Then I try Tortue Test - Blend

At This Position it Stops - 2nd Main Test (8K) - Number 10 in the test.
The Computer completly shutsdown. Doesnt Even restart.

So I changed the following...

HT - 1.38
SB - 1.5
So that they are not on auto
And Set the LDT Requency to 3X

It runs through Blend again... The Same Exact position - 2nd Main Test (8K) number 10 in the test... the computer shuts down again. I have tryed to mess with memory timings...
Only Thing I can think of is my ram is OCZ PC6400 800MHZ Ram (stock 4-4-4-15-1T timings 2.1v) ... I have it on 2T and 1T doesnt work, causes blue screen hardware failures or freezes. Does anyone have any idea ... or can anyone help me?

forgot to add.. I have ran through memtest before and it was fine, even with timings of 4-4-4-12-2T 2.1v.. Anyone have any idea?

I have also tryed these settings and the same result happens - always the 8k Test number 10. Also tryed Bios 0402.

HT - Auto
NB - 1.56
SB - Auto

HT - Auto
NB - 1.44
SB - Auto

HT - 1.5
NB - 1.5
SB - 1.5

Right now I am trying HT - 1.5, NB - 1.5, SB - 1.52 it froze, I know my top settings are right, it passed small fft's for 13hours 30mins i have pic and everything. I dont see why blend would be failing. Memtest is also fine.
June 14, 2008 7:54:31 PM

I believe it's incorporated into that "seamless" frequency stepping. As in, it doesn't like alot of the ways its forced to compute the final memory frequency. It lacks things like FSB strap to NB, which usually fixes those problems.

Try adjusting the FSB up or down a point. I get a more extreme version of what you are seeing. Mine simply freezes while testing the RAM, yet like you, can prime away with small ffts.

That's exactly what I had to do. It appears that the NVidia chipset is also quite noisy, when compared to normal chipsets. And since this board is lacking in GTL Vrefs, it's very hard to compensate for such things!

--Lupi
June 14, 2008 9:58:48 PM

thats exactly whatsup, I tryed Dram : fsb 1:1 and it still didnt fix the problem. I have had successful small FFT tests for 10hours with different settings then when I do blend it freezes like your saying, I set it to the point to where it gets to number 10 and shuts down. Its alwaysssss number 10, thats whats buggen me out, its the same exact position in the test, and it doesnt freeze it shuts down and no settings that I can change can fix the problem, tryed sb, ht, nb, ldt frequency all types of stuff..

Right now I have the settings that have been stable for 13hours in small fft.
Vcore - 1.5
Dram - 2.11
HT - 1.4
NB - 1.44
Sb - 1.5
I dont want to trust auto settings right now. And these have been stable .

I set the ram to 850 - which makes the FSB:D ram 8:9 and set the timings to 4-4-4-12-2T. It passed memtest86 perfectly twice in a row.
Related resources
June 14, 2008 11:08:35 PM

Try changing the TRD under memory timings to a manual 7.

--Lupi
June 15, 2008 1:57:16 AM

I tryed that. The last 2 cores completed through number 10, but the first 2 didnt and the computer shut down.
June 15, 2008 2:02:45 AM

if I am 13 hours 30mins stable through small fft, and I ran 2 memtest back to back and there was 0 errors... Can that be considered stable?
June 15, 2008 2:13:25 AM

JLewis187 said:
if I am 13 hours 30mins stable through small fft, and I ran 2 memtest back to back and there was 0 errors... Can that be considered stable?



Run the blend test. In reality, you will need both cpu and ram in action. so, two seperate tests do not do any good.
June 15, 2008 3:32:06 AM

I did however complete Hyper PI which is Super PI but for 4 Cores. It ran through 32m perfect took 42mins, now im putting the priority on realtime and testing it. does it sound stable?
June 15, 2008 3:34:36 AM

JLewis187 said:
I did however complete Hyper PI which is Super PI but for 4 Cores. It ran through 32m perfect took 42mins, now im putting the priority on realtime and testing it. does it sound stable?


I use prime blend test.
June 15, 2008 4:21:19 AM

its not stable as a sustem which is what u want. pass that blend test.
June 15, 2008 5:53:11 AM

alright this is what im doing, im going back to

1333 fsb - 800ram
vcore - 1.3
dram - 2.11
ht - 1.3
nb - 1.34
sb - 1.5

if it restarts again ill know its my ram.
June 15, 2008 6:13:07 AM

Did you unlink the FSB/Ram?

That really ended my series of BSOD's on my 680i, and makes it easy to get stable on the 790i............
June 15, 2008 6:25:00 AM

alright i passed it,
1333fsb - 800ram (5-5-5-15-2T 2.11v 5:6)
vcore - 1.3
dram - 2.11
ht - 1.3
nb - 1.34
sb - 1.5
LDT - 4X

I am going to try changing the LDT to 4X for the 1512FSB. Also leaving the HT at 1.3 and uping the NB to 1.44
June 15, 2008 9:55:30 AM

its still restarting, it only worked for 1333 fsb. tryed suping sb nb and ht voltages no luck.. i have no idea.
June 15, 2008 9:56:18 AM

last thing im going to attempt... im setting vcore to 1.5375.. prolly wont make a difference seince small fft was fine. but screw it.
June 15, 2008 9:58:10 AM

I have noticed that changing the VCore can also change the interference from the chipset. So ya never know!

Trust me, I know what you are going through, I couldnt settle for one, so I got the P5n-d and the p5n72t! Double the horror!

--Lupi
June 15, 2008 10:07:51 AM

quick question man... im runnen blend and im noticing my PF Usage is 2.12 GB.. is that normal? could that be causing the problem? also My raptor X Drive .. in my computer under policies I have enable advanced performance enabled.
June 15, 2008 11:20:49 AM

It is possible, you can try and disable the swap file and find out! I normally keep mine disabled, if I have 4 gigs of ram or more.

--Lupi
June 15, 2008 9:05:39 PM

ok, 3ghz ran perfectly never restarted

1333fsb
vcore - 1.325
dram - 2.11
ht - 1.3
nb - 1.34
sb - 1.5
LDT - 4X

Ram is 5:6 - 5-5-5-15-2T

why would 1333 fsb work but 1512fsb shutdown my computer..?


June 15, 2008 11:28:41 PM

Dont feel bad, I have only played with mine a few times, and gotten 3.35 stable. Mostly it just freezes when I start a test, or when it enters the windows desktop. All stops moving and it just sits there till you power it down.

I still think it has to do with the way it tried to tune its own frequencies now that they are using that seamless trash.

--Lupi
June 16, 2008 12:03:52 AM

i dunno... have no idea really guess ill just stick with 3.0ghz for right now, unless you can reccomend something else like a 3.2ghz fsb - mhz setup.
Right now though my cpu is 32C and my mb is 34C... really cold.
June 16, 2008 12:18:44 AM

i am gonna try for 3.2 ghz - 1424fsb - 801ram makes fsb:D ram - 8:9
Im gonna leave the motherboard voltages the same as the 3.0 ghz setup.
June 16, 2008 1:05:13 AM

K... its something between this

1333 FSB - 800 dram
Vcore - 1.325
Dram - 2.11
HT - 1.3
NB - 1.34
SB - 1.5
4X LDT
All CPU Config' disabled except for disable execute bit
completed 8 hour small fft, completed 8 hour blend

1424 FSB - 801Ram
Vcore - 1.4
Dram - 2.11
HT - 1.3
NB - 1.34
SB - 1.5
4X Ldt
Same as above
Restarted Blend at the 2nd test.... again.

only thing I can think of is FSB:D ram.... it was 8:9 when it restarted, is that a problem?

Although when I was trying 1600 X 8 it also restarted at the same place when the ram was 1:1
But why is it Shutting down.... wouldnt i just glitch up and freeze or corrupt and blue screen or... something besides Shutting down. Besides that I did 2 back to back Hyper PI 32M tests on the CPU. that program uses alotttt of ram. Both passed perfectly with no errors. Also passed memtest over 3 times on different setups.
June 16, 2008 7:53:43 AM

Im bassically going to haul over a few avi's ass of songs to my main haddrive and check on 3.4ghz and see if ... I mean just playing games while listening to music, avi's is sucessful.. and if it doesnt mess up in 2-3 days of hard gamen.. ill call it stable.. and if it doesnt... Im glad I have 3.0 ghz stable.
June 16, 2008 5:05:40 PM

Like I said before, instability is usually due to the ram, so get Prime95 blend stable for 24hours!
June 17, 2008 6:27:33 PM

Alright man you telll me what the hell you think then.

1333 fsb - 882 ram linked - 3:2 or whatever
Vcore - 1.285
Dram - 2.11
HT - 1.3
NB - 1.34
SB - 1.5
Ram Timings 4-4-4-12-2T
Passed The Test Perfectly.

FSB 1512... No matter what I change the HT, NB, SB, LDT Frequency, Set the ram timings to 5-5-5-15-2T, Set the MHZ to 754 so its 1:1 setten it to 801 so its 10:11... or setting it to 851 so its 8:9 NO matter what I change Prime95 Bend Shuts down the computer at the Same Exact Spot.. Its its my ram.. pease explain. or Use your Master-De-Bater Profile to use your best judgement on this.
June 17, 2008 8:30:31 PM

JLewis187 said:
Alright man you telll me what the hell you think then.

1333 fsb - 882 ram linked - 3:2 or whatever
Vcore - 1.285
Dram - 2.11
HT - 1.3
NB - 1.34
SB - 1.5
Ram Timings 4-4-4-12-2T
Passed The Test Perfectly.

FSB 1512... No matter what I change the HT, NB, SB, LDT Frequency, Set the ram timings to 5-5-5-15-2T, Set the MHZ to 754 so its 1:1 setten it to 801 so its 10:11... or setting it to 851 so its 8:9 NO matter what I change Prime95 Bend Shuts down the computer at the Same Exact Spot.. Its its my ram.. pease explain. or Use your Master-De-Bater Profile to use your best judgement on this.


I guess your vcore is low.
June 17, 2008 9:39:23 PM

JLewis187 said:
Alright man you telll me what the hell you think then.

1333 fsb - 882 ram linked - 3:2 or whatever
Vcore - 1.285
Dram - 2.11
HT - 1.3
NB - 1.34
SB - 1.5
Ram Timings 4-4-4-12-2T
Passed The Test Perfectly.

FSB 1512... No matter what I change the HT, NB, SB, LDT Frequency, Set the ram timings to 5-5-5-15-2T, Set the MHZ to 754 so its 1:1 setten it to 801 so its 10:11... or setting it to 851 so its 8:9 NO matter what I change Prime95 Bend Shuts down the computer at the Same Exact Spot.. Its its my ram.. pease explain. or Use your Master-De-Bater Profile to use your best judgement on this.

I'll tell you what, I too had a really hard time getting my ram stable. So I said to hell with this and left the ram settings to stock, or rather it's rated settings. You're running DDR2 800MHz, correct? So try linking the ram and use only FSB of 333MHz or 400MHz or whatever that will give you 800MHz for the ram.

Mean while I'll think up something up if this doesn't work.
June 17, 2008 11:54:25 PM

the ram timings seen to have nothing to do with anything. I tryed Linking the Ram at 1:1 while it was only 757mhz total instead of 800.. With timings of 5-5-5-18-2T.. still shutdown the computer. Its like, The same place everytime.
June 17, 2008 11:56:22 PM

like right now my settings at 1333 fsb.. Is like 888Ram 4-4-4-10-2T, 2.11Volts. and it doesnt shutdown the computer when that test number hits.
June 18, 2008 12:04:51 AM

and its not the vcore being to low. I had small fft for 13hours stable at 3.4ghz at 1.5vcore ... and I set it up to 1.525 to test it out on blend to see if the computer will stop shutting down. It doesnt..
Its like 42mins though
its like
Test 1
1
2
3
4

Test 2
1
2
3
4
5
6
7
8
9
10 - Shutdown. (40mins give or take)

no hardware errors occur if this helps.. as well as no info on a error happening in prime95 in the results.
June 18, 2008 1:07:34 AM

im going to try setting the fsb:D ram to 9:11.. and see if that makes it shutdown at 1333fsb.
June 18, 2008 1:44:26 AM

K im ofically braindead.... it didnt shut the computer off.. its not the ram .. it cant be the ram


What I am going to try do to do is this 1600FSB x 6multiplier ~ 2400ghz. Im going to set the HT NB SB so that the 1600fsb works. then set the cpu to it. If HT - 1.3, NB - 1.34, SB - 1.5 worked for 3.0GHZ what would you set it to for 1600fsb???
June 18, 2008 2:53:36 AM

I have just now updated to bios version 0601 which is suspose to fix the video corruption... and watching this avi on wmp11 i can say.. I think it did the job. I have read a guy using a E8400 who is completly stable at 4.0ghz at HT - 1.42 NB - 1.42 SB - Auto. If he is using a different chip would the ht and nb and sb be the same for me as well???
June 18, 2008 3:24:50 AM

Been reading around...apparently this motherboard is hell to OC.

To answer your question, normally the voltage should be around the same, give or take.

If it's not the ram, then it's the motherboard, but...good luck on that! That's about as far as my experience goes, so if there's any other questions, ask away! I'll await the updates.
June 18, 2008 3:25:28 AM

it didnt turn off at 1600 x 6... im going to up my multiplier to 8X... and go ahead and see if it works.
June 18, 2008 4:41:21 AM

Alright evilon its like this.
1600 X 6Multiplier
Vcore - Auto
Dram - 2.11
HT - 1.42
NB - 1.42
SB - Auto
This passed

Set the multiplier to 8X right.. set vcore to 1.425... It shut down on the 3rd main test. So right now I set the NB to 1.52 and I set the Vcore to 1.45 Does the NB have to be higher if the chip that your ocen is oced more.
June 18, 2008 6:53:38 AM

I have a totally stable FSB of 405 with a NB of 1.38. As a matter of fact, i found that when I raised it, it caused more trouble, like freezing, and degradation of performance on tests like 3dmark.

Gained stability and 150 points Via lowering the NB. Although I am using a different VID than you, and I begining to think that what is stable at 3.2 @ x.xxx vcore isnt stable by simply adding VCore and changing the Multiplier, like is possible on virtually every semi-newer intel based board.

That blows! i will be doing random tests as usual to see.

This is kinda fun. I had gotten used to finding a stable FSB first via a lower multi, and then just adding the VCore and multi later, when stable.

Hell no on the NVidia boards! It appears that I cant even change the FSB by one point or it fails to do anything but freeze when loading junk in the background when the desktop appears.

Funfun!

--Lupi
June 18, 2008 8:14:01 AM

thanks man... helps me out none... good job though lol.
June 18, 2008 9:19:53 AM

could having 2 fans in my system on high, and also my graphics card fan speed on 100percent be making the system turn off???? also I have the NB fan hookedup... could that affect anything.. One of the fans in my case that is on high is a 120m and is hooked into Cha1.. Can that be drawing power from my motherboard making stuff instable??? Like I have 2 top fans as exahuast 2 120mm . ones pluged into Cha1, the NB fan is pluged into cha 2.
June 18, 2008 10:58:00 AM

fan will only do good to the system. well unless your PSU is weak.

lower the CPU multiplier and up the FSB. so maybe upto a FSB the memory will be in good frreq to link to the CPU. always leave memory multiplier to 1:1.because doesnt matter how much you run the memory at it will be limited by FSB. use everest to see for yourself. dont be fool by those 400FSB+1066 ram.it just wont get you any extra speed.
June 18, 2008 10:58:58 AM

but i will up the vcore to 1.5v if i were you given the level of vdrop on Nvidia mobo.1.5v will get you about 11.42V if vdroop dont take any more.
June 18, 2008 4:23:58 PM

iluvgillgill said:
fan will only do good to the system. well unless your PSU is weak.

You know, I actually found out that having too many fans and incorrectly placed raises temps. The side fans in the CM Stacker is totally pointless. After some testing, removing all the side fans drops my CPU and motherboard temps down by 3C. Meh, 3C shouldn't affect his OC anyways...
June 19, 2008 12:39:20 AM

WELL DONE EVILONIRIGI!!!!!
June 20, 2008 1:31:10 AM

Has nothing to do with any of that, my mb temps are like 35c when sitten. It has to do with the motherboard... cause the mb fken sucks. Ive read forums on asus' forum with other people with this prob. I think the ram still plays a apart in the instability over 3ghz. I mean.. the stock timings are 4-4-4-15-1T.. you set it to that and it blue screens instantly.. so yea.
a b K Overclocking
June 20, 2008 10:41:14 PM

JL. I've mention to you before that this board has FSB holes. Stay clear of them within 100mhz of each side. Like mine. 2.8Ghz and 3.2Ghz and 3.6ghz are instability FSB zones.

Find somewhere around 3.5Ghz or 3.3Ghz and be happy with that. You're trying to OC by jumping around different Rated FSB. It'll take you forever to find a stable spot that way.

Keep your memeory at 750Mhz or Below, unlinked. Get your CPU OC stable first, then go back and work on your RAM.

As far as the ram timings, just don't use the 1T command rate if it blue screens on you. You won't see any perceptible difference

And lastly, you paid for a Toyota, but complains that your Toyota sucks because you see people in Mercedes that have better luxury options and more features in their cars.
June 22, 2008 7:23:30 AM

Actually I got my fsb stable at 3.4ghz, The HT voltage needed to be at 1.24, not 1.4 like I had.... And by the way, My computer just hit 18,206 3dmark06... Sounds like a pretty sweet ass system to be bro
!