I have read around alot of the threads on the forum regarding the Q6600 and generally see that it looks like I have some serious temperature issues with my setup.
My system specs are as follows:
Q6600 Revision B3
4GB HyperX DDR2-800 RAM
Asus P5K Deluxe Motherboard Bios Rev. 505 Beta
XFX 8800GTS 640MB
Antec P182 Case (1 Top, 1 Rear Exhaust, 1 Lower, 2 Central (cooling graphics card)
- Tested with original Antec Tricool Fans on High Setting in all fan locations
- Tested also with 5 replacement Noctua NF S12 in all fan locations
Thermalright Ultra 120 Extreme (lapped to a mirror finish) with a Scythe S-Flex SFF21F
Artic Silver 5 Thermal Compound (have Shin Etsu X23 7783D and Liquid Metal Pro on order)
Windows Vista Ultimate 32 bit
Tested using Core Temp 0.95, Speed fan 4.33 (offset +15c) and Prime95 v25.5 for minimum of 12 to 24 hours at a time over several weeks. There was no overclocking done just ran at stock speed with Speedstep off.
Temperatures are as follows (Ambient room temp 23-25c)
Workbench (no case):
Case sides removed:
I have seen alot of people overclocking this processor to 3ghz with lower temperatures than I get with a stock setup so I know there must be something wrong somewhere.
What I have considered and tried to look it to was the mounting of the Mounting Ultra 120 - I have tried a penny, a coin that I drilled a hole out big enough for the screw head, metal washers and also a teflon and rubber washer still with not much difference with the temps above (these were probably the lowest achieve so far).
I have tried differing amount of AS5 from the thin line across the middle as suggested by AS to rubbing it into both surfaces to minute traces to a thick layer. The heatsink itself is lapped to a mirror finish and is flat, although I am sure the Q6600 is not with the razor blade test so I have considered lapping that also but am relectant to void the warranty.
I have a few options left - I still have the stock Intel heatsink, I have another Ultra 120 extreme on order for another machine which I will try unlapped to see if it makes any difference with the concave / convex issues. I have a boxed Zalman CNPS9500 that I could try or I considered a Tuniq 120 Tower - I also have some Shin Etsu X23 7783D and Liquid Metal Pro on order but expect that the issues won't be fixed by a new thermal compound.
Any more ideas or comments would be appreciated as I am running out of things to consider