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Q6600 - evga 680i LT SLI - Overclocking - No Luck at ALL!!!

post #1 of 26
Thread Starter 
Good Day!

This is my first post but I've lurked for awhile. I have a new rig and I've been trying to overclock it for over a week. I've spent all of my free time working on it and I simply can't get it stable. I've read the guides - cpu's, MoBo's, memory, vcore, vdroop...you name it. I've tried to learn everything but i'm stuck.

Here's were I hope you can come in and save the day.

Here's my system

Evga 680i LT SLI bios p07 version a2
Q6600 G0 Revision, BStepping
8800GT(2) SLI
Watercooling
Corsair Dominator RAM PC2-6400 (1G x 4) 4.4.4.12 2.0 volts

I've downloaded HWMonitor, SuperPI, Prime95, CPUZ and FutureMarks PCMark and 3dMark.

Here's my problem, no matter what I do I can't get it stable. I've adjusted the FSB to 355.6 x 9, memory linked and synced. I've turned off everything that I can think of in the BIOS. I have my memory running stock 4.4.4.12 2.0v. I've started the vcore at 1.31 and have slowly raised it up to 1.45. At 1.45 I see a drop underload to 1.39.

I have no problems with Temps it appears because the CPU's have never risen above 52C ever.

All I am trying to do is to tweak this system to run rock stable at 3.2Ghz, tighten mem timings if possible and add a slight overclock on the GPUs. As I mentioned CPU and GPUs are watercooled. Oh, and I have a 750w power supply. PC purchased from digitalstormonline.

Any advice that will help me I will take. I'd hate to waste another week going in circles.

Any screen shots that are needed to help I can add.

Thanks in Advance

Brad - Providence, RI Obviously a Noob Overclocker
post #2 of 26
is it only 355x9 you are having troubles with? or any overclock at all? ie: is it stable at 350x9?

If its just 355x9 that wont get stable, try more voltage, the max is 1.55, so try 1.475 and 1.50, also have you adjusted you motherboard voltage, FSB and MCH ?

if you go to your user cp up at the top of the page and enter your info under system, you wont have to list it, it will be automatic.

also try unlinking your memory and setting it to 800. worry about OCing it after cpu is stable
The Money Pit
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CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
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The Money Pit
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CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
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120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
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Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
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post #3 of 26
Thread Starter 
Thanks for the info, I'll list my info in profile. Let me start with saying that I bought the machine overclocked by digitalstorm at 3.0ghz. I figured I could do better. I wrote down all the original data and my paper was thrown away (argh). With that said I haven't tried to stabilize it at 3.0. I've been trying with 3.2 to start with thinking there isn't anyway that my machine can't pull that off. I'd love to get it to run faster however the way things are going...

I'll unlink my memory leaving the FSB at 355.6 x 9 (3.2) and set it to 800Mhz. Should I up the mem voltage or leave it at 2.0 which it is rated for?
post #4 of 26
Thread Starter 
Just ran a Prime95 Small FFT test and it hung after 40 minutes. vcore setting in bios 1.45; FSB QDR 1422, Mem Linked and Synched at 711.0.

I'm going to try to unlink the mem and set it to 800Mhz, and up the volts a few ticks. After what has been happening, i am losing faith.

Any help would be appreciated.
post #5 of 26
2.0 should be ok on that ram.

also you should go back to 335x9 and somewhere around 1.35 volts, run prime and see what happens. If it doesnt make it, up the volts to say, 1.375, also you may want to try giving your FSB .1 volts for a little help..

If i am following you correctly, your pc came clocked at 3.0 (335x9) and you set it to 3.2 (355x9) which really isnt much of a jump, but still I'd test it a 335x9 and find a safe voltage there so you have a basis to go by...

then raise to 345x9 and test til you find a match there.

continue this process. But FYI, Ive been trying for a week now to get mine stable at 360x9, and keep hitting a wall. I set my vcore at 1.42, Put +.2 on my FSB and MCH, and let it run before I cameto work today... hopefully its still chugging away when I get home. But some cpu's just dont like the higher clock speeds, sorry, just the facts.

So get stable at 335x9 and go from there.
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
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120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
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The Money Pit
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CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
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post #6 of 26
PS: Whats your 3dmark06 score with that system? Its what I plan on putting together, except with the 780i board....
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
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Reply
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
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post #7 of 26
Thread Starter 
Thanks 10acjed. I'm doing exactly what you said. I bumped it down to 335 x 9. set vcore to 1.375, set memory unlinked to 800mhz and 2.0 volts. bumped FSB to 1.5 (1.4 is auto) and am going to run prime again. Hopefully no faults...

Most things in my bios are disabled. Could I have something disabled that I shouldn't have?

by the way...prime should no way have any problems with vista home premium right?
post #8 of 26
Thread Starter 
originally from factory is 14,004. I ran 3dmark after pumping up the juice (obviously not stable system) and I had it at 15,555. PCMark from factory was 9.559. I ran it over 10K, but once again not on a stable system.
post #9 of 26
Well depending on what you disabled/enabled...

you could always reset the bios, FIRST try doing a search here for "680i overclocking guide" and also google the same thing.

Find out everything you need to set in bios, write it down.
shut down and post into bios, find the option to restore optimal settings, save and exit, post back to bios and disable all the settings you wrote down, reset your clock/ram/volts to whatever your at now and go from there....

otherwise continue what your doing...

prime works fine in vista. is that 64bit? ether way its ok. Make sure its set to 4 and small FFT's
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
post #10 of 26
Thread Starter 
I'm pretty sure that bios settings are good, however i'll right down 680i settings from web. I'm running 32-bit vista not 64-bit. Prime is running now at the lower settings 333.5 x 9 at bios vcore 1.3750 (drooped to 1.320) without hanging... unfortunately its only been 30 minutes ;-)
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