AMD FX-4300 CPU Failure under load

4216278

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Nov 27, 2015
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Hello Everyone,
I have a custom build and recently upgraded my CPU form an Athlon II to an FX-4300 and have had numerous problems since.
My Build:
Motherboard: ASRock 880G Extreme3
CPU: AMD FX-4300 (Black Edition if that means anything)
GPU: XFX Radeon R7 360 2GB Double Dissipation Edition
RAM: 2 x PNY 4GB DDR3 and 2 x PNY 2GB DDR3 (Can't remember full details)
1TB Hard Drive (Seagate or WD or something)
Windows 7
and using a Corsair H75 cooler

Idle CPU temps are always under 30C I'm fairly sure it isn't overheating. I try to stress test the CPU with Prime95 but the PC will freeze/crash/lockup shortly after the tests start.

I recently encountered a number of issues after upgrading the CPU, such as (and in this order) first CPU would crash instantly on boot up, returned to amazon for a replacement, new one works (except from this issue) Old Antec h2o 620 leaks over previous graphics card, replace that with the R7 360. Stability issues come up again. Check RAM with MemTest, Windows test and individual stick at a time test (No results). Check CPU clock speeds (Core Voltage and timings were way off) fix those to clock speeds, PSU dies (coughed and spluttered out, did pin test and all it did was hiss at me) replaced with EVGA 500 Watt, everything hunky dorry, except the system freezes with the only option being a restart, with no BSOD, when ever the CPU seems to hit max load. Examples being Prime95. running games such as AC: Revelations or WatchDogs, but it can also freeze just surfing the web etc. (played other games like RE:6 and Gmod just fine though)

Any help with this will be more than appreciated,
Thank you :)
 

superstition

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Feb 27, 2009
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Idle temp is pretty useless. Run Cinebench 15 multithread test twice in a row and tell me the maximum temperature you hit (use HWINFO64 to monitor). Cinebench multithread test is demanding but not as much as Prime or Linpack.

Also, look for your VRM temp and post that.
 

4216278

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Nov 27, 2015
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Okay, I have half of tomorrow of so I will give that a go. I bought a Athlon II X3 for now to try and see if it was just the MoBo acting up after the PSU failure and that is working fine now, the max I've seen the FX-4300 reach is about 38C
 

4216278

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Nov 27, 2015
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4,510


Okay, I have half of tomorrow of so I will give that a go. I bought a Athlon II X3 for now to try and see if it was just the MoBo acting up after the PSU failure and that is working fine now, the max I've seen the FX-4300 reach is about 38C
 

4216278

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Nov 27, 2015
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Ran the test, max temp was only 42C and every other temp was blow 30...
I have updated the BIOS, reseated the CPU. I can't believe that Amazon would manage to send me a naff one twice. I am really baffled as to what the problem is