The Much Needed EVGA 680i A1 Q6600 O.C thread

[icon57]

if you want to boot at 450 x 8
i def would set volts manually, and not on auto!
you need to read through this thread for volt settings...i can boot at 450 x 8, but i see no dif in running 400 x 9

[Reinvented]

For the past couple of days I'm trying to get my new Q6600 STABLE AT 3.6 Ghz but without succses. It will run Prime 95 25.4 for 2 hours(then I stop it manually), and remain stable for playing games,video encoding..., basicaly anything. After couple of hours and sometimes even the next day computer locks up while on desktop,doing nothing or sometimes while playing the game.

First I've tried with higher VCore but it's all the same from 1.375 to 1.45. Then I moved on to adjust the other voltages and tried different voltage combinations for SPP, MCP, FSB and HT, and noticed that they are best if left at AUTO(which is completly different from my previous Core2Duo E4300 that needed these voltages set manually for decent overclock). If I set these voltages at anything else then AUTO computer restarts or fails Prime in matter of minutes. Memory is out of question because it's completly stable(tested with Memtest 86+).Also, tried x8 multi with 450 FSB and it wouldn't even boot.

Does anybody have any suggestions on how to resolve this? All help is very much appreciated.

I'm not sure if you actually have a G0 or not, since you copy and pasted your message in two threads, and it looked like you were spamming. Sooo, I'll assume you don't. Even though that thread says G0 people can easily wander into the wrong place...

3.6 might be tricky if you are using a B3...
For 3.6, which I wasn't very comfortable with, it needed 1.5475 vcore, and 1.55v for the MCP <-> SPP, and 1.5v FSB. It was stable in the tasks I did, except for long duration heavy load.

My B3 did 3.3 easily. Here were my settings (with vdrop mod).
Vcore: 1.45v
VFSB: Auto/1.4v (1.5v set manually in here works great too)
Memory: 2.1v
SPP: Auto
MCP: Auto
MCP-SPP: 1.45v

The vdrop mod is very important on the 680i board. Since it drops pretty badly. These worked VERY well for 3.3. It did a full 24/7 Prime Small FFT, and ran WCG just fine as well.

I also have a G0 that I got yesterday, it's an L727A. It's doing 3.6 @ 1.45...still doing small FFT's right now. Going on 7 hours. Will do a full 24 though!

The only difference now is that I can do 3.6 with my vFSB @ 1.5v. And it's looking good!

And two hours prime is NOTHING. Make sure you do small FFT's at least..

You also need to keep in mind, NOT every chip is a freaking winner. And don't be lame and return it because it didn't clock the way you wanted it to. Testing to find your max clocks is better, and then once you do, lower it a bit until it's stable 24/7.

if you want to boot at 450 x 8
i def would set volts manually, and not on auto!
you need to read through this thread for volt settings...i can boot at 450 x 8, but i see no dif in running 400 x 9

QFT. One guy in this thread also left some voltages on Auto, and that works just fine also. I believe he left his MCP-SPP auto, as well as the actual volts for MCP/SPP. You absolutely don't need to shove so many volts at it to get it to run STABLE. As long as you do the VDrop mod, you are a-okay! That's what matters most when you overclock the quad.

[CikaNovo]

Thanks for replying Reinvented and icon57. I posted in G0 OC thread as well because that thread gets visited much more frequently.
Anyway it is G0, batch 720B080. I can do 3.3 Ghz with really low voltages:

Vcore: 1.325v
VFSB: Auto/1.4v
Memory: 2.0v
SPP: Auto/1.4
MCP: Auto/1.5
MCP-SPP: Auto/1.2v

It's all very weird because I needed to set all those voltages at 1.5v for E4300 in order to get it stable at 3.3 Ghz. I did VDrop mod before this Q6600 was instaled.
I follow this and G0 OC thread from beginning and as far as I can see different people say different things,regarding these voltages.
I remember that guy with all the voltages at auto except for Vcore and Mem (NoSoMo I think) ,and also there are those that have set their voltages to something like:
1.55v for SPP
1.65v for MCP
1.55v for SPP-MCP
1.5v for VFSB

I have tried both settings and many in between,but everything else except for AUTO fails Prime pretty quickly.AUTO settings will give me couple of hours to a day of stability.
Temps shouldn't be a problem,case is ventilated properly and TRU 120 EX is doing a good job for cooling the CPU.

Reinvented,can you please give me voltages you're Priming at ,at the moment?Thanks again