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New 780Ti, getting hard resets, PSU issue?

post #1 of 4
Thread Starter 
Is getting a computer reset while gaming/benching always a PSU problem?

I have an Antec Earthwatts 650W and previously ran a 580 @ 1.13v for 2 years with no problems. I have a 2500k @ 4.2, it runs at about 1.3v. I'm wondering if the PSU I have just isn't enough to give this card the ~1.2v it wants. I can bench at +260 Mhz core, but any memory OC and randomly at +250 Core my PC will just restart. I have no problem ordering a new PSU, just want to verify that it's likely the culprit. I'm under the impression that if you just OC too far, display drivers will crash but your PC won't reset, since it was like that with my 580.

Thoughts?

EDIT: Just played some BF4 with Precision open so I could see, and it's randomly dropping down to 800 Mhz core and 949mv. Is it automatically throttling because my PSU can't give it enough power or something?

EDIT2: After more playing and observing, it all seems to run fine for a minute then the power usage goes down to 60% and stays there, and GPU usage only shows 50% (with BF4 running). In Heaven however, usage is 99% and it's at 106% power. Anyone know what would cause these kinds of issues?
Edited by sircuddles - 11/26/13 at 6:53pm
post #2 of 4
780ti requires about 42amps on the 12v rail.

your 12v rail is only rate for 38A i would call a powersupply issue
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by Blade 117 View Post

780ti requires about 42amps on the 12v rail.

your 12v rail is only rate for 38A i would call a powersupply issue

Thanks for the info, I know pretty much nothing when it comes to PSUs and power requirements. It seems to be stable now even though it sometimes pulls 1.2v, but looks like it's time for a new PSU.
post #4 of 4
Quote:
Originally Posted by sircuddles View Post

Thanks for the info, I know pretty much nothing when it comes to PSUs and power requirements. It seems to be stable now even though it sometimes pulls 1.2v, but looks like it's time for a new PSU.

Yeah the 12v rails on yours is a dual. But one is set to run your cpu. While the other is dedicated onto your cpu / eps pins.
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