Quick question: is an instant system-reboot normal for an unstable OC on GTX580?

[Stigma]

Hey,

Quick question: is a system-reboot normal for an unstable setting on GTX580?

I've been getting some VERY strange data when trying to find the optimal OC for my GTX580 (like core voltage seeming to not help at all over ca 875Mhz, and other issues like setting that can stress in crysis for an hour but then crash in 5 minutes with identical setting except a litte MORE juice to the core - I am sticking to below 1.137 here so its not anything extreme).

I am getting 2 types of different crashes though. It soft-crashes to desktop when it would seem logical that I have pushed it too far with too little voltage - but when stressing over time even on quite lower settings I get full system reboots like it just cuts power. These second types of "crashes" seem to be tied to the results that I can't make sense out of - so I have a sneaking suspicion that this might be connected to a completely different problem like some sort of motherboard overcurrent feature that is wrongly activating (I have checked out PSU voltages in stress and idle manually + via logging just to make sure there isn't anything very obviously wrong that should make the system restart just from any problem in the PSU alone).

So in short - is this sort of power-cut instant-restart something I should even be seeing under normal conditions when figuring out a relatively moderate OC on my GTX580? If this is unusual then that definitely warrants me to dig deeper and find out whats going on so I would very much appreciate some input. I'm sure there are plenty here who have OCed their GTX580's and can tell me from experience what is normal I think I will probably in any case doublecheck by firing up my old motherboard/CPU/RAM with this card and doing the same tests to see if this gives me completely different results - but I appreciate any answers regardless.

EDIT: Motherboard is P8Z68-V Pro
After I started suspecting a seperate cause I found this, which I think might possibly be related:
http://www.overclock.net/t/1003290/p...andom-restarts
I think testing on another mobo should confirm this easily if this is the case - but any feedback and experiences are welcome nonetheless in the meantime.

-Stigma

[andressergio]

Hey,

Quick question: is a system-reboot normal for an unstable setting on GTX580?

I've been getting some VERY strange data when trying to find the optimal OC for my GTX580 (like core voltage seeming to not help at all over ca 875Mhz, and other issues like setting that can stress in crysis for an hour but then crash in 5 minutes with identical setting except a litte MORE juice to the core - I am sticking to below 1.137 here so its not anything extreme).

I am getting 2 types of different crashes though. It soft-crashes to desktop when it would seem logical that I have pushed it too far with too little voltage - but when stressing over time even on quite lower settings I get full system reboots like it just cuts power. These second types of "crashes" seem to be tied to the results that I can't make sense out of - so I have a sneaking suspicion that this might be connected to a completely different problem like some sort of motherboard overcurrent feature that is wrongly activating (I have checked out PSU voltages in stress and idle manually + via logging just to make sure there isn't anything very obviously wrong that should make the system restart just from any problem in the PSU alone).

So in short - is this sort of power-cut instant-restart something I should even be seeing under normal conditions when figuring out a relatively moderate OC on my GTX580? If this is unusual then that definitely warrants me to dig deeper and find out whats going on so I would very much appreciate some input. I'm sure there are plenty here who have OCed their GTX580's and can tell me from experience what is normal I think I will probably in any case doublecheck by firing up my old motherboard/CPU/RAM with this card and doing the same tests to see if this gives me completely different results - but I appreciate any answers regardless.

EDIT: Motherboard is P8Z68-V Pro
After I started suspecting a seperate cause I found this, which I think might possibly be related:
http://www.overclock.net/t/1003290/p...andom-restarts
I think testing on another mobo should confirm this easily if this is the case - but any feedback and experiences are welcome nonetheless in the meantime.

-Stigma

Hey there

When oc on VGA fails can either send you to desktop with a driver error which means u are almost there on volts
Then if it goes black screen and u have to manually reboot well u need more volts or card don't go more
Eventually u can get bsod ye but if it's turns off means psu

This are my opinions hope u can figure out

[CryptiK]

Yes if its hella unstable. Could be PSU related also.

[CrazyNutz]

Yes it can just reboot.