highest Q6600 OC on default (not auto!) vcore

[VirtualLarry]

Just wondering if the silicon for the Q6600 is higher quality than the E2xxx series, since the max OC is around 3.6, and the max OC for the E2xxx is around 3.2. Therefore, would one be able to OC the Q6600 on stock vcore higher than the E2xxx? I got around 2.8Ghz on stock vcore for my E4400 L2 stepping before things started to get flaky. I'm hoping that the Q6600 will clock somewhat higher than that. Any ideas?

People that have FSB pin-modded their Q6600s in their OEM systems, please respond as well. If you have increased the FSB and OCed the Q6600 without doing a vcore mod, I would like to hear your results.

 

[BTRY B 529th FA BN]

Are you talking about the pencil mod? how is that done?

 

[aigomorla]

Originally posted by: VirtualLarry
Just wondering if the silicon for the Q6600 is higher quality than the E2xxx series, since the max OC is around 3.6, and the max OC for the E2xxx is around 3.2. Therefore, would one be able to OC the Q6600 on stock vcore higher than the E2xxx? I got around 2.8Ghz on stock vcore for my E4400 L2 stepping before things started to get flaky. I'm hoping that the Q6600 will clock somewhat higher than that. Any ideas?

People that have FSB pin-modded their Q6600s in their OEM systems, please respond as well. If you have increased the FSB and OCed the Q6600 without doing a vcore mod, I would like to hear your results.

cooling dependant.

Larry ive seen peoeple keep these girls at 1.5+ loaded all the time.

Cooling plays a hugh factor on quads. You'll be cooling limited faster then voltage limited.

 

[balloonshark]

Hi. I'm running my Q6600 @ 3.0GHz (9 X 334) with stock vcore. My VID is 1.325 which is the supposed to be the highest. I still have not performed a long term stress test though. The longest is a 3 hour Prime95 Blend test. I was also able to boot into XP @ 3.1 and 3.2 (stock vcore) but Prime crashed immediately. All other voltages are also stock.

 

[Idontcare]

Originally posted by: balloonshark
My VID is 1.325 which is the supposed to be the highest. I still have not performed a long term stress test though. The longest is a 3 hour Prime95 Blend test. I was also able to boot into XP @ 3.1 and 3.2 (stock vcore) but Prime crashed immediately. All other voltages are also stock.

Highest VID for Q6600 has been increased to 1.5V now, per Intel specs.

http://processorfinder.intel.c...tails.aspx?sSpec=SLACR

As for the system not passing prime95 at 3.1GHz on stock voltages, you need to see if your idle temps are in the low 30's. If the idle temps are higher then no doubt your loaded temps are rocketing into the 60's or 70's which is simply too hot for stock voltage stability at those clocks.

 

[Gillbot]

Originally posted by: balloonshark
Hi. I'm running my Q6600 @ 3.0GHz (9 X 334) with stock vcore. My VID is 1.325 which is the supposed to be the highest. I still have not performed a long term stress test though. The longest is a 3 hour Prime95 Blend test. I was also able to boot into XP @ 3.1 and 3.2 (stock vcore) but Prime crashed immediately. All other voltages are also stock.

Mine runs 3.2Ghz stock volts prime stable all day long. Soon as I bump it up a little though, it goes down hill fast.

 

[balloonshark]

Originally posted by: Idontcare

Originally posted by: balloonshark
My VID is 1.325 which is the supposed to be the highest. I still have not performed a long term stress test though. The longest is a 3 hour Prime95 Blend test. I was also able to boot into XP @ 3.1 and 3.2 (stock vcore) but Prime crashed immediately. All other voltages are also stock.

Highest VID for Q6600 has been increased to 1.5V now, per Intel specs.

http://processorfinder.intel.c...tails.aspx?sSpec=SLACR

As for the system not passing prime95 at 3.1GHz on stock voltages, you need to see if your idle temps are in the low 30's. If the idle temps are higher then no doubt your loaded temps are rocketing into the 60's or 70's which is simply too hot for stock voltage stability at those clocks.

Thanks for the info on the new/higher voltages. Mine is a GO that I bought a while back from fry's when they were $180.

I also never thought about the temps causing the crashing. Normally when running Prime95 @3.0 I my temps are 56,56,49,52 in Core Temp with a room temp of 22C. This is also my first build so 3GHz is plenty fast, but it is temping to try an get higher.

Gillbot,
3.2GHz sounds good on stock voltage.

 

[sgrinavi]

I run 1 of mine 3.2 at 1.25v 24/7 and the other at 3.1 at 1.25 v. Neither one gives me any lip...

 

[VirtualLarry]

Originally posted by: Idontcare
As for the system not passing prime95 at 3.1GHz on stock voltages, you need to see if your idle temps are in the low 30's. If the idle temps are higher then no doubt your loaded temps are rocketing into the 60's or 70's which is simply too hot for stock voltage stability at those clocks.

I disagree. Even if the chip thermal throttles, it should at least be stable, up to a point. At the very least, it should be stable up to TJMax.

 

[Idontcare]

Originally posted by: VirtualLarry

Originally posted by: Idontcare
As for the system not passing prime95 at 3.1GHz on stock voltages, you need to see if your idle temps are in the low 30's. If the idle temps are higher then no doubt your loaded temps are rocketing into the 60's or 70's which is simply too hot for stock voltage stability at those clocks.

I disagree. Even if the chip thermal throttles, it should at least be stable, up to a point. At the very least, it should be stable up to TJMax.

What are you disagreeing with? Device physics?

Temperature adds thermal instability (noise) to a transistor's functionality, requiring higher voltage at higher temperatures in order to sustain the necessary signal/noise ratio for supporting a given operating frequency.

What you have said in your post is that you do not believe that shmoo plots have a temperature dependence...did you really intend to state this?

A processor's ability to function at TJmax at VID and stock clockspeeds is all that is guaranteed by the binning process...clock the chip higher, with or without increasing Vcore, and you have no guarantee that it will operate correctly at temperatures up to TJmax.