Update: New question! G0 Q6600 + xtreme undervolting.

[jeffyjaixx]

*** NEW QUESTION ON POST #20***

Thanks, guys!
____________

Hey, got some results to post! :)

Setup:

G0 Q6600 L723A765 1.26250 VID w/ Thermalright Ultra 120 Extreme (stock) + Scythe S-FLEX SFF21F 12 CM
Asus P5K-C 0701 Bios w/ pencil vdroop mod
2 x Buffalo Firestix 2x1GB Micron D9GMH DDR2-800 4-4-4-8
1xSeagate 200GB SATA + 1xWD 500GB SATA2
EVGA 8800 GTS 640MB on Dell 2407WFP-HC
Antec TruePower 2.0 550W SLI-ready

So far, 3.610 Ghz (401x9) stable on AIR at 1.38 vcore real (1.4250v bios).

http://img473.imageshack.us/img473/5628/36ghzonairnocasetest3homu7.th.jpg (http://img473.imageshack.us/my.php?image=36ghzonairnocasetest3homu7.jpg)

I will be back with updates as I finish my case!

____________

Aug. 9 2007 Update

Decided to have some fun with xtreme undervolting :D.

Ambient temp is 16-17 degrees Celsius (in the basement lol).

1.1375 vcore in bios, 1.10 under load. Priming and 3dMark06 rock stable so far!

http://img507.imageshack.us/img507/9448/25ghzonairnocasetestloatc9.th.jpg (http://img507.imageshack.us/my.php?image=25ghzonairnocasetestloatc9.jpg)

Futuremark 3D Mark 06 Compare link: http://service.futuremark.com/compare?3dm06=2695495

Okay, finally found the max stable OC at 1.10 vcore real under load.

Finally, found max stable overclock was @ 2.85 Ghz. This is very impressive considering this is at 1.10 vcore under load!

G0 = :up:

http://img179.imageshack.us/img179/7922/285ghzonairnocasetestlohi6.th.jpg (http://img179.imageshack.us/my.php?image=285ghzonairnocasetestlohi6.jpg)

Okay, I think I'm done for the night.

Enjoy.
____________

Aug. 11, 2007 Update

Back with some more results! ;)

Max stable FSB was 480 Mhz but I forgot to take a screen.

3.7 Ghz w/ vcore at 1.43-1.44 under load - Temps never reached above 70 degrees Celsius. This will be my new 24/7 overclock.

Idle:

http://img474.imageshack.us/img474/9075/37ghzidle1475vcorebiossnf0.th.jpg (http://img474.imageshack.us/my.php?image=37ghzidle1475vcorebiossnf0.jpg)

Load:

http://img382.imageshack.us/img382/5141/37ghzload1475vcorebiosuv1.th.jpg (http://img382.imageshack.us/my.php?image=37ghzload1475vcorebiosuv1.jpg)

4 Ghz bootable no problem! (1.52-1.54 vcore) ;)

http://img467.imageshack.us/img467/1774/450x9q6600idleug3.th.jpg (http://img467.imageshack.us/my.php?image=450x9q6600idleug3.jpg)

[viperman999]

How would that affect the life/wear & tear of the CPU going that low on the vcore? Or is it better for the CPU overall?

[jeffyjaixx]

How would that affect the life/wear & tear of the CPU going that low on the vcore? Or is it better for the CPU overall?

I believe it's better for the CPU because it's less heat produced and it's getting less juice prolonging its longevity.

[willy]

Cool (literally) .... Cool with Thermalright Ultra-120, you may not even need a fan !

[KonniXeoN]

what version of prime95 is the latest?

I'm looking to prime my q6600, I'm scared I might have damaged while trying to install the damn heatsink. :mad:

[jeffyjaixx]

what version of prime95 is the latest?

I'm looking to prime my q6600, I'm scared I might have damaged while trying to install the damn heatsink. :mad:

Not really sure, but I'm using 25.3 if that helps any. ;)

[haveblue]

That's pretty impressive. Have to checked how high you can get it on stock volts?

[jeffyjaixx]

That's pretty impressive. Have to checked how high you can get it on stock volts?

I think around 3.24 Ghz at stock volts (1.2625 vcore). I will test when I get home from work. ;)

[BB88]

let me go out of topic a bit....

what are those weather/calendar gadgets on your desktop?

[KonniXeoN]

by the way are you using a stock cooler?

[jeffyjaixx]

let me go out of topic a bit....

what are those weather/calendar gadgets on your desktop?

Yahoo Widgets for the weather and clock, Rainlendar for the calendar.

by the way are you using a stock cooler?

Nope. ThermalRight Ultra 120 Extreme.

[KonniXeoN]

will that fit on my p5k dexlue?
I got my rig working.

[board123]

Is the 4 Ghz stable at all or does it only "boot"? And is the 1.52v the real vcore or the bios vcore?

[jeffyjaixx]

will that fit on my p5k dexlue?
I got my rig working.

Yup.

Is the 4 Ghz stable at all or does it only "boot"? And is the 1.52v the real vcore or the bios vcore?

It's not PRIME stable. I don't have watercooling so I didn't dare go near trying to get it stable lol. That would be real vcore at idle. At load, it would go down 0.01.

[jeffyjaixx]

August 12, 2007 Update

Got another 2 GB of ram and decided to push it a little bit further. Was able to reach 3.8 Ghz PRIME stable wtih 4 GB of DDR2.

My new 24/7 atm :)

http://img232.imageshack.us/img232/6827/38ghzload148vcorejf9.th.jpg (http://img232.imageshack.us/my.php?image=38ghzload148vcorejf9.jpg)

CPU-Z Screen

http://img186.imageshack.us/img186/7458/cpuzfor38ghzuo2.jpg

http://img467.imageshack.us/img467/1774/450x9q6600idleug3.th.jpg (http://img467.imageshack.us/my.php?image=450x9q6600idleug3.jpg)

I don't feel comfortable running it with so much juice. I'm going to try to find the best clock around 1.25 vcore real range. Be back later!

[glennaxl]

Aug. 11, 2007 Update

Back with some more results!

Max stable FSB was 480 Mhz but I forgot to take a screen.

3.7 Ghz w/ vcore at 1.43-1.44 under load - Temps never reached above 70 degrees Celsius. This will be my new 24/7 overclock.



wats your voltage config for this?

[jeffyjaixx]

wats your voltage config for this?

CPU Vcore in bios = 1.4750
FSB = 411
Multi = x9
Ram = 1.90Vdimm
everything else is Auto.

[glennaxl]

Great! I'll try this when i get home.

I have Q6700 and the max stable (full load 27/4) i can get is 3.25Ghz

Mobo=Asus Striker Extreme
Ram=OCZ 8500 DDR2
HSF=Thermalright U120 Extreme w/ Scythe S-FLEX 120MM Blue

FSB=325
Multi=10
RAM=Linked/4:3
Voltages are all auto.

[jeffyjaixx]

Great! I'll try this when i get home.

I have Q6700 and the max stable (full load 27/4) i can get is 3.25Ghz

Mobo=Asus Striker Extreme
Ram=OCZ 8500 DDR2
HSF=Thermalright U120 Extreme w/ Scythe S-FLEX 120MM Blue

FSB=325
Multi=10
RAM=Linked/4:3
Voltages are all auto.

YMMV may vary on the vcore in bios because every motherboard has a different vdroop. I had to pencil mod mine because it was so bad before.

[jeffyjaixx]

August 13, 2007 Update

New question: Okay, so I basically have 3 settings to choose for my 24/7 overclock. Which one would you choose based on overall vcore, vdimm, heat, speed etc.? All three settings are using small FFT's for PRIME stability. Thanks in advance.

Setting 1:

http://img267.imageshack.us/img267/366/126vcorereal333ghzq6600yu4.th.jpg (http://img267.imageshack.us/my.php?image=126vcorereal333ghzq6600yu4.jpg)

Cpu speed: 3.330 Ghz (370 x 9) 1.3000 vcore set in bios, 1.26 vcore real under load.
Ram: 1.8vdimm with 1:1 ratio at 4-4-4-8

Setting 2:

http://img393.imageshack.us/img393/2888/361ghz138vcorerealsmallcy6.th.jpg (http://img393.imageshack.us/my.php?image=361ghz138vcorerealsmallcy6.jpg)

Cpu speed: 3.610 Ghz (401 x 9) 1.4250 vcore set in bios, 1.38 vcore real under load.
Ram: 2.0 vdimm with 1:1 ratio at 4-4-4-8

Setting 3:

http://img267.imageshack.us/img267/7460/37ghz143vcorerealsmallfwo2.th.jpg (http://img267.imageshack.us/my.php?image=37ghz143vcorerealsmallfwo2.jpg)

Cpu speed: 3.699 Ghz (411 x 9) 1.4750 vcore set in bios, 1.43 vcore real under load.
Ram: 2.1 vdimm with 1:1 ratio at 4-4-4-8

I don't want to set my real vcore over 1.45 volts for 24/7 use so that is why I excluded my 3.8 Ghz setting.

Thanks guys!

[crazdefool]

I would run at setting 3. that ram is rated for 2.1v so thats not too high. also 1.43 is very moderate. i would run up to 1.55v 24/7 personally. but its all up to you.

try those settings with EIST enabled to see if your system is stable.
EIST will drop the volts/multi when your cpu is idle to save power.. since your chip is running 411x9 it will drop to 411x6 at idle (2466ghz). it will also drop your idle temps quite a bit.

[Zertz]

The real question is: do you need that much power?

But anyways, I'd choose the 3.6Ghz config. 100 more Mhz isn't worth 6C per core IMO and 60C under full load is good for a Quad.

[board123]

The real question is: do you need that much power?
I don't think he's overclocking this to actually make use of the speed. A lot of people just overclock for fun, and it is a lot of fun.

[jeffyjaixx]

I would run at setting 3. that ram is rated for 2.1v so thats not too high. also 1.43 is very moderate. i would run up to 1.55v 24/7 personally. but its all up to you.

try those settings with EIST enabled to see if your system is stable.
EIST will drop the volts/multi when your cpu is idle to save power.. since your chip is running 411x9 it will drop to 411x6 at idle (2466ghz). it will also drop your idle temps quite a bit.

Okay, actually I need 2.2vdimm to get it stable. I will try those settings with EIST enabled and do my normal daily work and see if it's stable. Thanks!

Btw, if I enable it, it only drops the multi at idle right? Will it go back up whenever I install something or play games? I guess my real question is, how much CPU % usage to make it go back up automatically to x9 multiplier?

The real question is: do you need that much power?

But anyways, I'd choose the 3.6Ghz config. 100 more Mhz isn't worth 6C per core IMO and 60C under full load is good for a Quad.

You can never get enough power :lol:. I have to get the most out of my rig - the RFD way! Besides, everything loads and installs faster with more speed.

Alright, thanks for your input!

[board123]

Okay, actually I need 2.2vdimm to get it stable. I will try those settings with EIST enabled and do my normal daily work and see if it's stable. Thanks!
What about 8 Tras? Could that be why you need 2.2v? I have the same memory and it's running at 430 MHz 4-4-4-12 with 2.1v.

[jeffyjaixx]

What about 8 Tras? Could that be why you need 2.2v? I have the same memory and it's running at 430 MHz 4-4-4-12 with 2.1v.

Yes, that may be the reason why but I could do 4-4-4-8 with 1.8vdimm at 370 Mhz.

Btw, board123, what setting do you think I should use 24/7?

[board123]

I would take #1. Going from #1 to #2 takes a dramatic increase in vcore and you really don't get that much more real world performance out of it. I like undervolting. My E6300 is running with 1.20v.

[haveblue]

I'd take option 2, personally.

[matkun]

#2 I'd say.. though out of curiosity, why are you not using the Blend option, and Small FFTs instead?

For extended Prime95 testing, I tend to use Blend since it's supposed to also stress the RAM and system bus. The CPU isn't the only point of failure in a heavy overclock.

[jeffyjaixx]

I would take #1. Going from #1 to #2 takes a dramatic increase in vcore and you really don't get that much more real world performance out of it. I like undervolting. My E6300 is running with 1.20v.

I'd take option 2, personally.

#2 I'd say.. though out of curiosity, why are you not using the Blend option, and Small FFTs instead?

For extended Prime95 testing, I tend to use Blend since it's supposed to also stress the RAM and system bus. The CPU isn't the only point of failure in a heavy overclock.

Thanks for the votes. I think I'm going for #2.

I know that the motherboard and ram can do those settings easily so the only thing I need to test is my cpu. Anyways, right now I'm PRIMING blend at 3.61 Ghz just to be on the safe side. :D

[Badman]

I'd say #2 for Summer and #3 for winter. See if your MB can save the 2 settings , so it will be easy to switch back and forth.

[tdotcbc84]

Just did some undervolting myself!

Set my Vcore @ 1.184 (Bios) and my 430x7 overclock is Stable :D


great thing about my temps, is that it never touches 50 degrees :D

[board123]

With P5K-E

http://img138.imageshack.us/img138/9325/p5ke32jv9.th.png (http://img138.imageshack.us/my.php?image=p5ke32jv9.png)

I'll test lower vcore later when I have time. I can't really overclock much higher because I'm using 4 sticks of RAM and the OCZ Platinum is holding me back. The Firestix can easily get to DDR2-1066.