CPU running hot with new computer.

numaisnumba1

Commendable
Dec 27, 2016
1
0
1,510
I purchased my girlfriend parts for a new computer and assembled it. This isn't my first computer build, so I wasn't worried. It went through POST fine. I noticed at that point that the heat sink was running it's fan at full capacity. I thought it might be because of the lack of ventilation. Loaded everything up, bought an after market heat sink as well as some thermal paste, and booted the system. One of the first programs that I installed was Open Hardware in order to monitor the temperature of the graphics card and the CPU. The CPU was idle at 45-55 C. I know this is too high since my computer runs at 34 C.

I've tried remounting the heat sink 3 times, but nothing. It seems all fine until a couple minutes after a fresh boot. The CPU activity on each core, I have 8 cores, is low, 10% or lower, but then spikes on all of them to 40-50% with one core at 100%. This in turn drives the CPU heat up and drives my fan to max speed.

What could be wrong?

I'm using an AMD 8350 Black Edition 8 core processor and a cryorig h7 heat sink.
 
Solution
You need to monitor thermal margin and not temperature with AMD CPUs. Download AMD Overdrive and find out what the thermal margin is at full load; a well cooled CPU should have a thermal margin of at least 20 deg C. (Other temperature monitors do not work well with AMD CPUs.) From personal experience I don't think the temperature is anything to worry about, but check with AMD Overdrive.

As to the other problem about spiking, it may depend what you have running. I would check with Task Manager to see what processes are running which causes those activity spikes.
You need to monitor thermal margin and not temperature with AMD CPUs. Download AMD Overdrive and find out what the thermal margin is at full load; a well cooled CPU should have a thermal margin of at least 20 deg C. (Other temperature monitors do not work well with AMD CPUs.) From personal experience I don't think the temperature is anything to worry about, but check with AMD Overdrive.

As to the other problem about spiking, it may depend what you have running. I would check with Task Manager to see what processes are running which causes those activity spikes.
 
Solution