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AMD FX8120 BSOD when running above 2.7Ghz

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So... after many months on several forums trying to work out what was wrong with my pc its finally been found that the CPU that i bought under a year ago the AMD FX 8120 is the cause of random BSODs. The system can run stable.... at 2.7 Ghz which lets be honest is pretty terrible, if I increase it the duration until i see a BSOD decreases at 3.1 Ghz it BSODs at around 30 seconds after windows has loaded. At 2.8 Ghz i will often see BSOD whilst the system is under load, however the weird thing is i can stress the system ridiculously hard at 2.7 Ghz and it will just man it and carry on. so any ideas?

Thanks,
Bidgbob

More about : amd fx8120 bsod running 7ghz

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CPUs Expert

What is your motherboard? AM3+ motherboards came out before the AM3+ CPUs, meaning that some didn't have BIOS supporting bulldozer. That may be the case with your system. That CPU should be running at 3.1 ghz not 2.7. You'll have to update the bios to support the newer AM3+ CPUs.


If updating the board bios doesn't work then you do have a shafted CPU. If it's still in warranty return it, if not you're gonna have to buy a new one I'm afraid.
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whatsthatnoise said:
BIOS or improperly seated CPU heatsink. Could also be your mainboard not supporting a TDP of 125W.

In other words; it would help to know what mainboard you are using.


if his cpu supports the chip it will support 125 tdp
CPUs Expert

darren0000 said:
if his cpu supports the chip it will support 125 tdp


You mean if his board supports the CPU, right?

There is not much info in the OPs post, besides that he got BSODs and one can only assume that he downclocks the CPU to 2.7 to run the system. He never mentioned if the CPU is recognized properly as an FX 8120.

whatsthatnoise said:
You mean if his board supports the CPU, right?

There is not much info in the OPs post, besides that he got BSODs and one can only assume that he downclocks the CPU to 2.7 to run the system. He never mentioned if the CPU is recognized properly as an FX 8120.


yeah lol yeah maybe worth while checkn if it sees all cores etc in the bios.

very strange tho, because if it needed a bios update which i assume it does because its the 2nd last cpu next to the 8150 for his board am3+, like my board board, i was running phenom ii x4 850 bios ver 1.20 and i had to jump all the way to version 1.70 to get my 8 core to work

I have updated my BIOS since ive had the CPU at the moment my specs are:



MOBO > Msi 760GM-P23 FX
CPU & Cooler > AMD FX 8120 Eight Core @ 2.8 Ghz With Stock AMD Heatsink and fan cooler
MEMORY > Crucial 8GB x 2 240-PIN DDR3 PC3 - 10600 UDI
POWER SUPPLY > Corsair TX 750W V2 PSU - 80plus Bronze Certified
VIDEO CARD >(Single) HIS ATI Radeon 6850HD 1GB
HDDs > (Three) SATA2 SAMSUNG HD400LD
SATA2 WDC WD2500AAJS
SATA2 Seagate ST1000DL002 1TB Barracuda
BURNERS > DVD/CD RW SAMSUNG TS-H653As
SOUND DEVICE > Onboard
USB > Generic Dell Mouse/Keyboard Combo, Edimax 150Mbs-Un wireless receiver
O/S > Windows 7 Ultimate
CPUs Expert

While the "supported CPU" list of your mainboard lists the 8120 (both the 95W and 125W version), the main page says:



Like I assumed, 95W max TDP seems to be your issue. Which means a new board would be in order.

I'd get a mainboard with 970 or 990 chipset.

any suggestions? im not lookin to splash out majorly really because im saving for uni and driving I reckon my limit will be £50, websites like scan.co.uk and ebuyer are my normal watering hole :) 

Thnaks btw for helping me diagnose this ive been everywhere haha :sol: 

Bidgbob
CPUs Expert

A 970 chipset board should be available at around £50. Just search for a "manufacturer of your choice 970".

Like ASRock 970 or Gigabyte 970.

Once you found something you like, check out the mainboard manufacturer's site for that board. Specifically the CPU support list and the max TDP the board can handle. It needs to be at least 125W.

Update it to the LATEST BIOS. The first few releases had issues for the fx line. It took about 4-5 months to work out the kinks. If you do the update and still have issues, you might have to increase the voltages on the motherboard. I'm far more inclined to blame the motherboard than the cpu. Might have to replace the mb.

you should also try to see the temperature of the cpu when at stock and while overclocking. the mobo might definitely be the problem, but the problem might also be that the cooler is *** or that the mobo isnt adjusting the coolers power correctly.

so just check if the cooler is correctly mounted andcheck the temps when at idle and OC.
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