GPU or PSU

[DChuv]

Hey, guys. I put together a budget desktop about a month ago (AMD FX - 6300, BioStar A960D+, 16 GB DDR3 Ram, NVIDIA GeForce GTX560, PSU Corsair 600W) At first everything was fine, but then it started to reboot or freeze after about an hour or so at first, and then every five minutes.

Seems like the overheating issue to me, but the CPU and GPU temps are fine; the PSU gets pretty hot when gaming, though. So, I replaced the gtx560 with my old Radeon HD 5700 and that took care of the problem (except the old video card is glitchy as hell and about to die, so gaming is not an option). I guess the GTX 560 needs a lot more power than the Radeon since it requires two 6-pin pci-e connectors, while HD 5700 needs only one.

So, what do you guys think? Is my new video card bad or is it the power supply? Thanks!

 

[DChuv]

Corsair 600 watt power supply is a good solid supply (I'm guessing it's a CX600 ????) Even that, their cheapest model is More than up for the job.....

Load (both cards actually draw SAME power)
- 5770 ?? draws 150watts (there is no "5700 card" its' either a 5750 or 5770
- 560 draws 150watts
NOTE: I run CX600 to run 5870's which draw 210watts & PSU's are "cold as ice..."

Condition, "Hot PSU"....
- is the FAN in the PSU running at ALL times? (if fail fails, PSU will get hot....)
- what system case to you have
- I'm guessing it MIGHT be one with a top mount power supply arrangement?
- Heat from the GPU rises and blows thru the PSU giving the impression PSU is hot but, it's not...
- what make and model of Each GPU
- I'll guess one dumps hot air into the case and the other blows it out the back of the case....

I. Yes, it's 5750. I'm not disagreeing with you, obviously I don't know much about the subject, but it's just weird that when I have the 560 inside, it takes minutes before the system reboots; with Radeon it takes hours. If both cards draw the same amount of energy, what is the reason for such a difference?

II. 1. Yes, to my knowledge, the fan runs at all times. I'm not sure if it's running fast enough though.
2. It's an old standard ATX case. I can look up the model if you need it.
a) Correct. PSU is on top.
b) Maybe. But, as I mentioned above, the card stays cool; temp doesn't exceed 45 C and rarely goes into 40's.
3. One is Zotac GTX 560 1gb 256-bit; The other is Radeon Sapphire HD 5750 1gb 128-bit.

 

[DChuv]

I got a new Radeon HD 7970 (Asus). Just tried it in, and the same thing happened after ~20 min. So, I guess I'll exchange the PSU. I do intend to return the new video card, but I think I'll keep it for another week or so for further testing.

Is there any chance that it's not the psu but the mobo? And if there is, how likely is that?