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E6600 P5WDH Instability @ 3.6 GHz

Last response: in Overclocking
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September 15, 2006 1:01:26 AM

I've been trying by trial and error to get my E6600 to OC to 3.6Ghz using the core 2 overclock guide. I can run stable all day @ 3.5Ghz. I get an error with Prime95 as soon as I start running the 2nd torture test (both small ffts). I haven't a clue as to what voltage or other adjustments I should try to get it stable.

I have an E6600 stepping 6 rev b2, Gskill pcc-6400 4-4-4-12, and CPU water cooling (stock on motherboard). , bios ver 1101 [0901], 9x multiplier, Dram spd enabled.

Current settings set at:

CPU Freq 401
Dram Freq DDR2-802MHz

Memory 2.2V
CPU Vcore 1.55V
FSB 1.40V
MCH 1.65V
ICH Auto

Any working setups / suggestions would be appreciated.

Thanks,
Will
September 15, 2006 10:25:14 AM

I have an e6600 which will not post at 400Mhz FSB. I am using a Gigabyte965 S3 mobo, with Musking DDR667 XP memory. The same setup worked flawlessly with a e6400 @400Mhz FSB will all settings set to standard. I have the e6600 running @ 390 Mhz FSB @1.425 Vcore the rest of the settings standard. I dont run prime95 or the memtest. I run 3DMark2005 and get 7825 marks. I run 3DMark2006 and get 3125 marks.
I play F.E.A.R and UT2004 and Prey games. All work flawlessly. I burn a few DVD's and surf the internet. My system runs totally stable for what I use it for. Easy Tune reports my CPU temp at 37*C and Sys Temp 34*C. It runs at 44*C under load. I have tried to up the voltage to 1.5 for Vcore, but it will not boot @ 400 Mhz FSB. I really dont want to run the CPU at 1.5V. I think it is the limitation of the e6600 that prevents me from running at 400 Mhz. I have tried everything suggested in the OC guide setup and nothing has allowed me to boot at 400 Mhz FSB. I am pleased with the overclock I have achieved and it works flawlessly for me.

Intel e6600
Gigabyte GA965 S3
Muskin XP DDR 667
Zalman 9500
WD 250 GB Sata II
ATI X850 XT PE
September 16, 2006 3:11:58 PM

These settings work for 3.6ghz.

CPU : E6600 @ 3.6ghz Air Cooled
RAM : OCZ 6400 Gold Gamer (Timing suck on this not recommended)
VIDEO : X1900XTX
COOLER : Zalman CNPS9500 AT
MB : Asus P5W DH Deluxe
BIOS : 1401

FSB : 400
PCI-E : 101
PCI : 33
VCORE : 1.5875
vFSB : 1.3
MCH : 1.65
ICH : Auto

Memory timings set on Auto and the other 2 settings disabled. The timings are weird and not running at the rated values. I'm guessing its the ram but I may try and set them manually.


Running at this speed on Air makes me a bit nervous see as the temps reach into the 70c+ mark when running Orthos dual prime. You will notice I only ran this for 24 seconds for this picture but ran it prevously for 2 minutes. Using PC Probe the temps are much lower mid 50's but it seems to measure external CPU temp instead of internal like Core Temp does.

http://valid.x86-secret.com/show_oc?id=121829
!