Exceeding PSU limits overclocking.

[BluD]

Has anyone ever exceeded their PSUs capabilities while overclocking, and what effects did it have?

I was pushing my cards earlier seeing how far they would clock up in GTA and they were running fine at about 1.36v but i think i might have overheated the PSU maybe causing the current to drop a little or summat as my screen went red and the graphics card drivers wouldnt load after i reset so i needed to reinstall them.

Got it running fine again and thought it was maybe just too low voltage on the core so i added a little and tried again. A few hours later i got the red screen again and this time the PC wouldnt post on either bios. I managed to get into the bios after leaving the battery out for a while and reflashed them and got it working again, reinstallled the graphics drivers again and its all up and running again.

The main reason i think its maybe the PSU causing it is cause the only other time i got that red screen crash was when i first got the PSU and i left that Eco mode on so the PSU just overheated after about half an hour all the time, so i had to disable Eco mode to stop that. Also i dont get the same issue if i push one card too far, just get the usual driver crash and artifacts.

Anyone else get any of these results from pushing their PSU a little far?

 

[BluD]

Yeah the most i had this pulling was 800watt at the wall, that was with both card at 1.4v, at 1.35v theyre only pulling about 750w normally. I guess your right though, the overcurrent protection would have kicked in and just flat out restarted the machine not given me a red screen if it was pulling too many volts.

I thought its odd though that the only other time i got a red screen was from my 7950s overheating the PSU when i first got it, switching off the eco mode stopped that though.

Maybe rather than the PSU overheating its somthing else in the system, and turning the PSU out of eco mode just kept the other component cooler by its fan been on constantly.

I might have to take a look at the mobo temps or something.

The difference between 1.3v and 1.4 is only 50mhz anyway so its definitely not worth it for general gaming, but what can i say, i was bored and just started tinkering