Hey, just built this PC about 5 days ago. It was my first build. I had a lot trouble getting the HSF (the Xigmatek HDT S1283) in and it got knocked out of place the day after the PC was built. I put it back in place and now it's pretty secure, although I'm not sure if the knobs are twisted all the way as it's pretty difficult to secure the HSF when the fan is attached (and it's even more difficult to take the fan off). Yesterday I decided to check my system temps via SpeedFan and I noticed they seemed a bit high while idling. CPU is not OCed.
I think the problem is with the HSF so I'm gonna try to reapply the thermal compound tonight. Is 70% rubbing alcohol good enough for removing Arctic Silver 5 or should I get 99%? Also, is it worth sanding the surface of the HSF to even/smooth it out?
Remember that if your in-case temp is 40c, your cooling your CPU with 40c .... idle is going to be HIGHER.
ANd for the paste, apply a really thin line from the left to the right since C2Q have "both" DUO proc side by side internally.
something like this
Its the 3rd time on my Q9550 that i apply this way, and all my other build are using a very lil quantity of paste and its working awesomly. Removing the HSF ( or block) reveil a nice spread all over the CPU.
Hmm, I took the case out of its enclosure and all temperatures (except the GPU) dropped 5-7 degrees. All the cores are still in the 40s, though, so I'm still wondering if reapplying the AS5 and readjusting the HSF will help a little more. Also might buy a fan to put on the top to blow more hot air out. Tomorrow I'm gonna see if I can move any wires out of the way to make the airflow better.
Get as much airflow as possible going over your CPU. Moving cables out of the way is a good idea. I 86'd one of my optical drives and knocked out the remaining panels to make room for a big HDD fan, tore out the USB/FIRE WIRE ports on top of my case and stuffed a 60mm fan in there. There are 2 more fans in the front of the case and 2 in back including my PS fan. The suction is so strong my case cover door in front forcibly slams shut! But it isn't noisy at all due to fan controls. All fans are blowing toward the back of the case and its vents. Using Quiet Fan mode I'm able to get the following temperature readings:
Quad 9550 OC'd to 3.2 ghz: Idle 40C, Load 44-46C.