Can a CPU come defective from the factory (FX-8350)?

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ArkRoyal

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May 28, 2014
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I built a system a few months ago that constantly and randomly freezes (mouse stops moving, no inputs will stay completely locked up and requires a hard reset). Sometimes the freezes happen less often (if I'm doing something more intense like Lumion) - perhaps once every couple days. Or every 30-60 mins if I'm in Adobe After Effects. It's incredibly frustrating and you'll see below that I've practically built a new computer trying to fix it.

System specs:

CPU:FX-8350
MOTHERBOARD:Gigabyte 990fxa-ud3 (Rev 4)
GPU: Asus GeForce GTX 780 DirectCU II OC
RAM: 16GB Ram (GSKILL F3-1600)
HARD DRIVES: A pair of 128GB Samsung SSDs, and a 2TB spinning drive.
PSU: Corsair CX750
COOLING: H100i for CPU, 2 X 140mm fans sucking in the front, one 120mm pulling out back

History of what I've tried:

-Swapped in another GTX 780 - still froze randomly
-Swapped in different RAM - still froze randomly
-Reformatted and installed to a different SSD - still froze randomly
-Bought a new motherboard (originally had a an Asus M5A97 which I replaced with a 990FXA), reformatted, reseated processor and reinstalled - still froze randomly
- Upped the cpu vcore voltage - still froze randomly
- Swapped the power supply for a EVGA SuperNOVA 850 G2... still froze (returned the power supply)

so my CPU is defective? Anything else that could be (is this thing haunted?):??:


 
Solution
nostall


Yeah, it's pretty rare. That was the first I had ever encountered, and I personally have never had one fail, and I haven't seen any posts since (that I recall) where a CPU was bad or failed under normal use (a couple have reportedly...
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nostall

nostall

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Nov 28, 2012
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Myself and another forum member helped a poster last spring and summer and after about 3 months of trouble shooting it turned out to be a faulty CPU. Yes they do happen. That CPU has a 3 yr. warranty: contact AMD customer service/support and tell them what is going on; they should RMA it for you.
Good luck, and please let us know what happens.
 
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ArkRoyal

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May 28, 2014
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yup.. everything is keeping nice and cool according to HWmonitor.

I've had Lumion render for 20hrs straight without a hitch, but have had this thing repeatedly freeze just web browsing/youtube-ing so no heat related problems.
 
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ArkRoyal

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May 28, 2014
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Thanks! CPU was never really suggested as a solution during all my troubleshooting/googling so I'm glad to hear it COULD be the culprit. Will update.
 
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nostall

nostall

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Nov 28, 2012
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If you have a multi-meter, check you power on the ATX 8 pin auxillary plug, make sure it is getting 12Volts + or - 10%. Just a thought, don't think that is the prob. with the 850 G@ in there.
You are experiencing the same issue that the guy had last year: Drove us nuts cause the failures were primarily, but not always, while doing easy stuff; He looped video benchmarks, memtest85 was run, Prime95; they all usually ran fine.
Give 'em a call.
 
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nostall

nostall

Splendid
Nov 28, 2012
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23,865


Yeah, it's pretty rare. That was the first I had ever encountered, and I personally have never had one fail, and I haven't seen any posts since (that I recall) where a CPU was bad or failed under normal use (a couple have reportedly burned up, but that's not the CPU's fault.)
 
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Solution
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ArkRoyal

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May 28, 2014
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Thought I'd update everyone since things didn't turn out quite as expected...

I sent the CPU back to AMD, but went out and bought a replacement FX8350 (with a 14 day return policy) to hold me over (this is a work computer). Dropped the new CPU in and wow! no freezes! Worked for a couple days straight without freezes, but by coincidence I had also kept the wifi on the computer "turned off". After a couple days of freeze-free work, I finally had a reason to connect to the network and within an hour I got my first freeze. Since then I've confirmed that when the wifi card is "turned off" there are no freezes, but when the wifi card is allowed to connect to the network I get random freezes.

Sucks that I dragged AMD through the return process but I don't think I would have figured it out otherwise.

Thanks everyone for the help:wahoo:
 
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