Sandy Bridge Shutdown

Neuromancer · #1 02-17-2011

At first I thought it was vcore (happened last month in early Sandy Bridge testing), or OVP/OCP but in my memory testing this week, I found it happening in SPi when it happened in nothing else.

I thought more Vcore would solve the problem (IIRC it helped before) but I do no longer think that is the right answer since it seems tied to crazy high mem speeds and settings.

I was running 50 flat at 1.515 vcore, 2133 Multi at 8-11-8-1T 88TRFC, 1.70 vdimm and 1.275 VCCIO.

3 loops into 1M bam. Shut down and restart. Figured it was VTT so I increased to 1.285 it happened again. Was late so I just gave up.

I ran both 1M and 32M successfully right before that and was talking to Kal at the time actually.

Anyone have ideas?

EDIT: PSU is a corsair 750W and handled 3D benches ok maybe cross loading though?

DrNip · #2 02-17-2011

Too much vcore maybe or too much volts somewhere else? Dunno. That exact thing was happening to me but in 3D05 during the CPU tests. Would just shut down and reboot without any errors or blue screens of death. I kept jacking different volts up but with no luck. So I finally put everything back the way it was and lowered vcore and succeeded. Just a possible solution.

Gunslinger · #3 02-17-2011

Quote:

Originally Posted by DrNip

Too much vcore maybe or too much volts somewhere else? Dunno. That exact thing was happening to me but in 3D05 during the CPU tests. Would just shut down and reboot without any errors or blue screens of death. I kept jacking different volts up but with no luck. So I finally put everything back the way it was and lowered vcore and succeeded. Just a possible solution.

You know you don't need to run the CPU tests in '05 to get a score?

Neuromancer · #4 02-17-2011

Quote:

Originally Posted by DrNip

Too much vcore maybe or too much volts somewhere else? Dunno. That exact thing was happening to me but in 3D05 during the CPU tests. Would just shut down and reboot without any errors or blue screens of death. I kept jacking different volts up but with no luck. So I finally put everything back the way it was and lowered vcore and succeeded. Just a possible solution.

It is a lot of Vcore but it is necessary. BSODs with out it :(

I was really hoping that like on previous gens the high vcore was just an indication that voltage somewhere else was not being set properly, but I have tried lots of settings from .8-1.2v SA, 1-1.3 almost IO, PLL from 1.5-2.0

And with this recent testing I was thinking that it might be mem or IMC related...