Strange CPU problem

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Woody Lai

Reputable
Dec 17, 2014
11
0
4,510
I just bought my new computer recently and I was going to do some overclocking stuff.

Hardware:
Motherboard: ASRock Fatal1ty 990FX Killer
Display Card: SAPPHIRE R9 290X 8GB Vapor-X OC
CPU: AMD FX-8320
CPU Cooling: CoolerMaster SEIDON 120V plus
RAM: Corsair Vengeance 2x8GB DDR3 1866MHz
PSU: CoolerMaster GXII Pro 550W

But before I've changed anything, I've found a strange problem. My vcore is always at a voltage of around 0.86V and the CPU at around 1400MHz with ratio of 7.0 (checked by CPU-Z and HWiNFO)
I have tried to stress test it using prime95 and OCCT but the vcore nor the CPU clock increased, and in OCCT it shows that the CPU is in a negative overclocking of -60%, with the current clock being around 1400MHz and the original should be 3500MHz as it is shown.
Tried to change the power management in the BIOS and turned off all the power saving mode in it but it didn't change.
It really confused me as the performance is really poor now. It lags when I play 1080p videos on Youtube and also when I play CS:GO in a relatively low setting.
I have installed every possible drivers already.
Is my CPU defected? Or is there any settings that I missed?
 
Solution
Something is definitely wrong with the temperature readings unless you're reading them wrong. You should download HWinfo and run sensors. Watch the CPU core and package temps and see what they do under idle and load. There is no way any cpu can be 26° at idle and 30° under 100% load.

What are you using for the load? You should be using Prime95 version 26.6 found here. Do not use other versions:

http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html

Open Prime95 and run Small FFTs for ten minutes and take a screenshot of all the sensors on the HWinfo sensors screen. This will take more than one screenshot to get it all. Post the screenshots here using tinypic.com to generate the links.

Also take screenshots of the...