Processor Issue?

[LifeStealer]

i5 2500k
MSI P67A-GD65
G.Skill 4x2gb 1066
C300 128gb SSD

So I've been having random issues with freezing/restarts ect... I started trying to troubleshoot by checking the ram and updating the bios. Running Memtest I would get errors so I tried new ram. Still getting errors. So I tried a new motherboard.

The error I get in memtest (It isn't an error technically) is that an unexpected event has occurred. So seeing as everything else was new I thought I'd see if it was the processor. I disabled all but one core in the bios and ran memtest again. Works perfectly.

Does this mean a core is bad?

 

[BlueBlazer]

It might be contact problems and you may want to try re-seating the processor. Also look for any pins on the LGA socket that looks a bit off. You may also want to check for traces of "smudge" on the processor pads itself.... :hmm:

If all else fails, then it could be a bad CPU.

 

[PreferLinux]

Are you overclocking at all?

 

[LifeStealer]

Not overclocking. Everything is stock. I've been running prime for the past twelve hours without any hiccups though. Maybe something is amiss with my bios settings causing errors in memtest?

 

[sangyup81]

I find that 12 hours of prime 95 doesnt catch all integrated memory controller issues. i've seen failures at 20 hours or 35 hours

 

[LifeStealer]

Well I'm over 24 hours in at this point. No issues.

 

[Shmee]

what settings are you using in P95? have you tried linpack?

 

[LifeStealer]

I was just using the standard settings and no I haven't

 

[sm625]

What happens with just 2 cores enabled? I would try underclocking and undervolting with all 4 cores active. Maybe the peak current draw of all 4 cores is pulling down your DDR voltage rail. I think they're both derived from +12V. Did you try upping the voltage on the DDR?

 

[LifeStealer]

I upped voltage on the DDR rail, still didn't alleviate the issue. I've been using it and everything seems stable currently.