Overclocking my Q6600 to 4 ghz if possible

[jonkb]

Originally Posted by Drizzt5

I have my q6600 watercooled and I have it 3.87 ghz stable.... Going to 4ghz 24/7 stable is near impossible due to the amount of voltage I need to put into the fsb/nb/vcore.... It's just not safe for any of my hardware and not worth it. But benching @ 4ghz+ is easily done.

If temps are a problem, a quick and easy solution is to lap your processor. If done right it can lower temps a lot. It lowered mine anywhere from 6-10c's load.



http://valid.canardpc.com/show_oc.php?id=577553

Look.... I got here with only 1.48vcore...Temps were fantastic.

I even ran 3dmark06 with it and it didn't crash. It just will shut down if using prime95 though.

I have 1.5 in now 24/7 and never go over 69 load with pretty high ambient temps.

Lapping my CPU made my temps worse. I am never ever going to do such a shitty thing again.

About the 4 Ghz, I thought so... i have it at 3.7 Ghz stable for 3 hours Prime95, so i guess that's pretty damn good

[Mussels]

prime95 is a poor test. use OCCT's linpack test.

[MRCL]

Originally Posted by Mussels

prime95 is a poor test. use OCCT's linpack test.

True. I had a prime stable oc, then tried linpack...and cried.

[Homeless]

I've seen a q6600 @ 4ghz on phase. Never seen one on air/water before.

Mine will do 4.05Ghz STABLE on 1.58V. That said, its not a 24/7 clock, used for benching only. It really depends on luck / VID.

[Drizzt5]

Originally Posted by jonkb

Lapping my CPU made my temps worse. I am never ever going to do such a shitty thing again.

.......
You had to have done it wrong for your temps to get worse or you did something wrong. Lapping on the q6600 if done right can't really hurt your temps that I know of.... How did you do it?

Originally Posted by MRCL

True. I had a prime stable oc, then tried linpack...and cried.

What applications do you use on a daily basis that ever stress or heat up your cpu as much as linpack? I just use prime to confirm stability, and I never get any bsod's or any problems that way and better performance. But some people need absolute stability and I understand that and it makes complete sense.

Originally Posted by Homeless

I've seen a q6600 @ 4ghz on phase. Never seen one on air/water before.

You don't need phase to get 4ghz. It can be done with a TRUE if you get the right one.

Originally Posted by kyle2020

Mine will do 4.05Ghz STABLE on 1.58V. That said, its not a 24/7 clock, used for benching only. It really depends on luck / VID.

Yo, whats yours? Mines 1.225 and I have to use about the same... but it's the NB and FSB voltages that really scare me... 1.58 vcore is fine with me although I need to crank up the fans and open up windows and all sorts of shit.

VID on mine is 1.265 or something like that - NB I leave on auto, same with SB - ram voltage notches up from 1.9 to 2.1, but besides that its fine.

[jonkb]

Originally Posted by Drizzt5

.......
You had to have done it wrong for your temps to get worse or you did something wrong. Lapping on the q6600 if done right can't really hurt your temps that I know of.... How did you do it?

What applications do you use on a daily basis that ever stress or heat up your cpu as much as linpack? I just use prime to confirm stability, and I never get any bsod's or any problems that way and better performance. But some people need absolute stability and I understand that and it makes complete sense.

You don't need phase to get 4ghz. It can be done with a TRUE if you get the right one.


Yo, whats yours? Mines 1.225 and I have to use about the same... but it's the NB and FSB voltages that really scare me... 1.58 vcore is fine with me although I need to crank up the fans and open up windows and all sorts of shit.

I bought a lapping kit with glass. There were 400, 800, 1000, 1200, and 1500 grit. I controlled every movement, and it took me damn 6 hours to get the silver corners away. After that i took 800 and 1000, and then made it finish. My load temp got 6-7 C worse, and 3-4 degress worse in idle. So I'm done with lapping. In my book it's waste of time, money, and you're warranty is gone.

[Mussels]

Originally Posted by kyle2020

Mine will do 4.05Ghz STABLE on 1.58V. That said, its not a 24/7 clock, used for benching only. It really depends on luck / VID.

1.58v would have temps pretty damn high. i got 85C load on a TRUE 120 with 1.45v

[Drizzt5]

Originally Posted by jonkb

I bought a lapping kit with glass. There were 400, 800, 1000, 1200, and 1500 grit. I controlled every movement, and it took me damn 6 hours to get the silver corners away. After that i took 800 and 1000, and then made it finish. My load temp got 6-7 C worse, and 3-4 degress worse in idle. So I'm done with lapping. In my book it's waste of time, money, and you're warranty is gone.

Well, it isn't. I got the complete opposite result.

Also, 1.58v isn't too bad under water.

[jonkb]

Originally Posted by Drizzt5

Well, it isn't. I got the complete opposite result.

Also, 1.58v isn't too bad under water.

As I said. In MY book. It made things worse for me.

[Mussels]

most likely that means you did something wrong, lapped unevenly, lapped too much, didnt increase contact pressure with the heatsink after lapping, etc.

[jonkb]

Originally Posted by Mussels

most likely that means you did something wrong, lapped unevenly, lapped too much, didnt increase contact pressure with the heatsink after lapping, etc.

It was the CPU. I controlled every movement. And I dont think I lapped to much, as the silver corners didn't go away until I was done.

[Rasmus66]

4 ghz with a Q6600 on air is allmost impossible..

I had a Q6600 G0 before and with H2O i got it up to 4 ghz with 1,6 volt on a Asus P5E3.

Do you want a 24/7 clock or is it just for benching?

[fatguy1992]

Originally Posted by jonkb

So I got my new thermalright chipset cooler today as I thought that the heat from the NB limited my 4.0 ghz OC, making it unstable. But to my big surprise, Prime95 still crashes at 4 Ghz after 5 secs, and my PC reboots and sais "Overclocking failed" It went fast from 34 C to 68 C in Prime95 before crash.

Asus P5Q Pro and Q6600 with Prolima Megahalems CPU Cooler.

I tried this:

9x 440 FSB, it did boot, but crashed in prime. 8x500 didn't boot at all.
CPU Voltage: 1.6 V also i tried 1.5 and 1.55.
CPU PLL Voltage. 1.6 V. tried 1.7 and 1.8.
Ram: 2.2 V
NB Voltage: 1.5 (still cool on my thermalright)
Load Line: Enabled
FSB Termation Voltage: 1.3. Tried 1.4 and 1.5 to.
SB: Auto. Did try 1.4.
Ram runs 5-5-5-15 timings, so it shouldn't limit the OC.

All that CPU Skew and NB Skew Idon't know that it is...

Cheers

I need

LLC On
Vcore: 1.344v - U'll need way more
PLL: 1.5v
VTT: 1.3v

For safety if u want 24/7 usage keep the VTT @ 1.4v or less, PLL @ 1.6v or less and Vcore @ 1.55v (real) or less