PC Posts but after gaming Randomly shuts down

Hi everyone,

So after about 45 minutes of gaming my computer dies on me.

PSU in BIOS reads stable 12.36v
Temps at load: CPU ~33.5 C
GPU ~65 C

Comp shuts off and the DRAM LED turns on, solid red.

CPU: AMD Phenom II X6 (black edition and no OC)
MEM: G.Skill 1066 4 gig stick x4 (F3-10666CL9-4GBSR)
HDD: Samsung SSD 840 Pro - 128 gb
GPU: Radeon 6850 1 gig GDDR5
PSU: Ultra X3 Modular 850W PSU (assumed single rail)

I've built a few machines before but this problem is killing me. Ran X86 memtest and it came back clear.
3 answers Last reply
More about posts gaming randomly shuts
  1. Those are reliable. No need to be that cynical, CPUID says that the Max temp. before it shuts off is generally 33.5 average. No bologna.

    My idle is typically 28 C.

    **Most intensive thing I have played is DayZ**
  2. Understandable, I trust you.

    The cooler I have on the CPU is a generic one. Large "tower shape" lots of fins. Similar in design to this guy but with a 120 mm fan to pull air through it.: http://www.techeta.com/wp-content/uploads/2010/03/Prolimatech-Megahalems-Rev.B-CPU-heatsink-cooler.jpg

    The PC has been operable for a full year until this point.
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