Hi guys,
I recently built a PC for the first time. Everything seems to work ok (surprisingly ), except the CPU cooling.
Here's the build:
Motherboard: Gigabyte z97x-ud3h
PSU: Cooler Master V850
CPU: Intel Core i7-4770k (running at stock speeds)
Case: Fractal's Define R4
RAM: 2x Corsair LP Vengeance 8GB (1600 MHz)
Still waiting for the graphics card to be shipped, but it'll be Asus GTX780 DirectCU II
Cooling:
CPU: Arctic Cooling Freezer i30
2x Fractal's 140mm intake at the front
1 Cooler Master 120mm intake at the bottom
1 Cooler Master 140mm exhaust at the back
So, having assembled the whole thing, installed OSes etc, etc, I finally got to running a stress test. I wasn't worried because the CPU was idling at around 30 degrees (and as I'm writing this I'm seeing its at 23-24).
Running prime95 with the Blend test seemed okay to me - it ran from mid 60s to high 70s at most.
Running prime95 with small FFTs though really shocked me - it immediately goes in the mid to high 90's! What's interesting to me is that Core #0 always runs the hottest - goes to 100 degrees, and with each core the temperature goes lower - Core #3 runs below 90 degrees.
I tried reseating the cooler (& reapplied thermal compound), but practically nothing changed. Judging from the distribution of the thermal compound after removing the cooler the first time, I think it makes pretty good contact. The second time I put more thermal compound (worrying that the first time maybe I didn't put enough) - some of the cores run like 2-3 degrees cooler.
So... There's clearly something wrong and I really have no clue what to do next. Any tips, ideas and suggestions would be really appreciated (I'm kinda worried )
Thanks,
George