8320 Overclocking and temps

tribz · 22 Mar 2014 at 13:57

I've just setup up an FX8320 on a Gigabyte 990FXA-UD3 and its being cooled by an NH-D14.

I've set the multiplier to 22.5 which takes it to 4.5GHz with 1.45v. So far so good.

What I'm struggling to understand (this is my first AMD CPU overclock for a while) is that the temps are very low. The current temp under a prime load is 36 degrees which seems to low. Idle temp is 15 degrees. I've tested using Core Temp and HWMonitor.

The second is that using Core Temp, I can see all 8 cores fluctuating from 4.5 to 2.9 to 4.5 and so on. This to me looks like throttling under load.

What do you think? Also any tips to improve the overlock / settings would be appreciated.

gpuerrilla · 22 Mar 2014 at 14:18

Take a look here tribz.

tribz · 22 Mar 2014 at 14:33

Thanks, that looks like a good thread. I'll have a read and post any further enquiries there.

gpuerrilla · 22 Mar 2014 at 14:35

Have you disabled all the power saving features and ensured all cores are enabled in the BIOS?

tribz · 22 Mar 2014 at 15:08

Yes, the settings are as below ..

CPU Clock Ratio - 22.50
CPU Frequency - 4.5GHz
Core Performance Boost - Disabled
CPB Ration - 20
CPU Unlock - Disabled
Cool & Quiet - Disabled
C1E - Disabled
SMV - Disabled
CPU Core Control - Automatic
Core C6 State - Disabled
HPC Mode - Disabled
APM - Enabled

Cant get my head around the low load temps. On my 4770k @ 4.5GHz, that would be in the 50-60's under water.

gpuerrilla · 22 Mar 2014 at 15:13

Which are you looking at though as there is CPU temp and then there is 'package' temp?

My H100 keeps it below 52 with cpu max at 50.