Questions about Q6600 overclock

eraser2002 · 11 Nov 2007 at 08:53

Hi guys

im well chuffed with my new games pc overclock. i bought a antec 900 case, abit ip35pro (flashed latest bios) with Q6600, crucial 8500c5 ram and thermalright ultra 120 extreme with 12cm fan strapped on. just want to check things are ok

i managed to get the pc stable at 3.4ghz (378*9) - superpi 1M is 14.86secs

to achieve this i had to set the vcore in the bios to 1.525v but in windows iguru application it only says 1.425 which seems about right voltage for that speed overclock? under nheavy load that goes down to 1.41v

i set MCH up 2 steps to 1.33v
ICHIO 1.55v
CPU VTT 1.27v
DDR2 to 2.2v and its running at 567mhz at 2:3 (1134)

strange things -

when i load cpu-z 1.41 to main screen seems to get confused with the multiplier which flicks from 6 to 9 and back :confused:

- but its defo 9

coretemp just bluescreens the machine so cant load that

the only application i can get to see the temps is speedfan which shows the cores under load to be 55c-58c - is this ok?

since getting this at these settings the pc hasnt crashed once and ive run 4 primes to stress for 3 hours and its fine

played COD4 for hour and fine

Cheers
Chris

Diggsy · 11 Nov 2007 at 09:55

CPU-Z varying multi is probably because you have Speedstep (EIST and C1E) enabled. Don't worry about it, it's a powersaving feature.

Add +15c to Speedfan temps for them to be accurate, thus giving you 70-73c, which is probably about as high as you want to go.

But what are you using to load them? You should be using Prime95 25.4 or above with Small FFT's.

eraser2002 · 11 Nov 2007 at 10:11

ive been running 4 prime95 threads of In pace large FFTs

does this make any difference - ill retest with your suggested method if so?

cheers

tomanders91 · 11 Nov 2007 at 10:35

i wouldnt exagerate speedfan that much, for me atm speedfan and coretemp both are saying 29 and 32c.

eraser2002 · 11 Nov 2007 at 11:42

it crashed on the small FFT test within a couple of minutes so i lowered it to 3.3ghz and drop on cpu volts and its now at 45c instead of 55c

Diggsy · 11 Nov 2007 at 11:42

There is quite a bit more heat generated with small FFT's, and it is pushing your CPU to it's limit.

As for CoreTemp vs Speedfan, IIRC there are a couple of versions of CoreTemp that incorrectly reported the temps, that's maybe why they are close to those of Speedfan ^

Diggsy · 11 Nov 2007 at 11:43

eraser2002 said:
it crashed on the small FFT test within a couple of minutes so i lowered it to 3.3ghz and drop on cpu volts and its now at 45c instead of 55c

Yeah, Small FFT is pushing the CPU to it's limits, so if it's in any way flaky, this test will show it.

tomanders91 · 11 Nov 2007 at 11:50

Diggsy said:
There is quite a bit more heat generated with small FFT's, and it is pushing your CPU to it's limit.

As for CoreTemp vs Speedfan, IIRC there are a couple of versions of CoreTemp that incorrectly reported the temps, that's maybe why they are close to those of Speedfan ^

well for me, coretemp, speedfan and my motherboards driver software monitering thing all say the same thing :confused:

eraser2002 · 11 Nov 2007 at 11:54

also i downloaded a newer beta version of coretemp and that now opens and runs

coretemp - im getting 68c on core 0 and 2 and 57c on 1 and 3
speedfan - im getting 42c on all cores

strange