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Previously OC'ed Phenom II refuses to OC

xbonez

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Processor AMD Phenom II x4 965 BE @ 4.0Ghz
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I have a Phenom II x4 965BE (check out rest of my system specs to the left).

When I first built the PC, about an year ago, I had OC'ed it to 3.8Ghz, after which I hit a soft wall. My config was
FSB: 200Mhz, Multiplier: x19, CPU Voltage: 1.475

This was completely stable and would run successfully no matter how long I rand Prim95 torture test.

About a few months later, I had tor reset my BIOS settings while setting up a RAID array and never got around to OC'ing the processor again. Just today, I set out to do it.

I tried increasing the FSB a little bit. I tried upping only the multiplier. I increased voltage as I felt necessary. I timed RAM manually, left it on auto, gave it more voltage etc. etc.

Basically, I tried everything. My temperatures never go above 52 deg during torture test, yet no matter how great or how little my OC, within about 10min, one of the Prime95 workers (either core 2,3 or 4) stops stating reason as hardware error encountered.

The only thing that's changed in my PC since before is that i switched out the HD4890 for a GTX470.

Whats going on?
 
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try pulling the cpu out of the mobo and reset the cpu in the mobe again, maybe the new video card pulls more power from the mobo then the last one making OC harder?
 

JrRacinFan

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Does it post or just refuse to boot Windows?

EDIT:

Try a notch up in south bridge voltage ( assuming raid off your southbridge here).
 

xbonez

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It posts and boots successfully, but gives error in the first 10min of Prime95 test. See original post for details.

I don't think it should be inadequate power thats causing the trouble considering I have a 850W Corsair PSU.

Yes, RAID is on Southbridge but I don't seem to be having any troubles with the array. Should I still try increasing SB voltage?
 

JrRacinFan

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It posts and boots successfully, but gives error in the first 10min of Prime95 test. See original post for details.

I don't think it should be inadequate power thats causing the trouble considering I have a 850W Corsair PSU.

Yes, RAID is on Southbridge but I don't seem to be having any troubles with the array. Should I still try increasing SB voltage?

Don't bother with Prime95. Run an hour of OCCT Linpack @ max. If it passes you're good.
 

xbonez

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Philly, PA (US)
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Processor AMD Phenom II x4 965 BE @ 4.0Ghz
Motherboard MSI 790FX-GD70
Cooling Corsair H50 Liquid Cooling
Memory 2 x 2Gb Gskill Ripjaws 1600Mhz (7-7-7-24@1.6V)
Video Card(s) Asus GTX 470 @ Stock (Zalman VF3000 cooler)
Storage 2 x Samsung Spinpoint F3 500GB (RAID 0)
Display(s) Hanns G 28" @ 1920x1200
Case Antec 1200
Audio Device(s) Onboard -- TosLink --> Z5500
Power Supply Corsair 850TX 850W PSU
Software Win 7 64-bit Ultimate
Don't bother with Prime95. Run an hour of OCCT Linpack @ max. If it passes you're good.

Hmm...ok. will try this over the weekend. Thanks
 
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