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ASUS Radeon HD 7950 DirectCU II

Last response: in Graphics & Displays
November 29, 2012 4:33:21 PM


I just bought the following:

GPU: ASUS Radeon HD 7950 DirectCU II
MB: ASUS M5A99X Evo R2.0
CPU: AMD FX-6300

Here is my problem. As soon as any demand is put on the GPU, the fans start spinning really fast and then the computer blacks out and I need to reboot.

This happens, for example, when I try running the "rate my computer" feature in windows or simply at the main menu of the Metro 2033 demo (so nothing very demanding).

What can cause this? Is the GPU faulty? I have a 430w PSU, can this be the problem?

I thought it was the PSU but I wonder why the GPU would start spinning at very little demand...

Anyway, any input would be appreciated.
a b U Graphics card
a b Ĉ ASUS
November 29, 2012 4:44:48 PM

According to the card's specs, it can use up to 225W all on its own, which is just a touch over half the total capacity of your PSU. So given everything else that may be in your computer, it's entirely possible you've simply overloaded the PSU.
a b U Graphics card
November 29, 2012 4:48:29 PM

Looks like a power issue. What brand/make is your PSU?
Related resources
November 29, 2012 4:58:44 PM

It's a Corsair CX430.

I upgraded my computer with what I mentioned above, the rest I already had.
November 29, 2012 5:01:33 PM

I think I have a 600w in another computer which I don't think it needs. I think I'll swap them and see if the problem persists.
a b U Graphics card
November 29, 2012 5:53:15 PM

Well 208W is the peak of that card(stock so add some more). That Cx can get 336W on 12 Vrail.

That Cpu needs ~95W =320W ad 16W ram 15W hdd 25W dvd and you go over the W . But but that corsair can give more than 336W on 12 v rail so i dont think it would be the PSU. Just in case try it (maybe the PSU is faulty)

And what are the Temps of both CPU and GPU. ? The Usage of both ?
November 29, 2012 5:59:59 PM

The PSU is too low for that card, I believe.
a b U Graphics card
November 29, 2012 6:00:09 PM

Well a 7950 requires at least 500w power supply to run properly
November 29, 2012 7:13:00 PM

I made the swap for the 600w and everything looks fine now.

Thanks for your inputs.
a b U Graphics card
November 29, 2012 11:07:56 PM

Well nice to see u fixed it.

Good luck !