PC randomly shutting down during games?

[metroidmen]

While playing games, not while doing anything other than that, my computer will shut down and I will have to turn it back on. I dont think its an overheating issue as I purchased a new VERY powerful fan, its cooled my computer almost 20 degrees. When runing games for a while, the hottest my gpu gets is 57 and my cpu gets maybe 50 at most. Another fan is on the way too. My friend said it may be a faulty power supply so Id like input before I replace it.

Specs:
ASUS M4A88T-M/USB3 Motherboard
AMD Phenom II X4 945 @ 3.0GHz
4GB OCZ DDR3 1066 RAM
Zotac 460GTX 1 gb
Diablotek 1050W power supply - http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=5592470&RSort=4&csid=ITD&body=REVIEWS#ReviewStart
Windows 7 Ultimate 64-Bit

Any ideas or tips? Thanks guys!

 

[TheTygur]

I have been having that problem and from my experience and also advice that people have given me, it seems to come from a faulty power supply most of the time. I believe that your brand is a budget brand and the power rating it says should be taken for a grain of salt. You probably need to invest in a name brand power supply like Antec or Corsair.

 

[metroidmen]

Well, I was told by a couple people people that this is a good budget brand, so i guess i can try to replace it then if the problem persists, order another. What would you recommend?

 

[TheTygur]

Well first be sure thats what it is, would be nice to have a second opinion as I haven't built a PC in at least a few years. I am planning a new build in the next couple weeks that would probably have about the same power consumption as yours (Phenom II x4 970, 470GTX Super Overclock) or possibly a little more, and I singled out the Antec Earthwatts 750 which had a good price drop at newegg at the moment.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371026

And just fyi, the reviews on your current power supply are... less than stellar to say the least. I can't guarantee that is your problem but it does sound extremely likely. Might in a rare case be a bad RAM chip, but my experience with that is it doesnt generally shut down, it blue screens. And it would probably do it at some point outside of gaming.

 

[davcon]

Sorry but your psu is crap and can't even put out 600W.
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=187
Buy a good quality psu that can actually deliver it's labelled power.
Here's a good psu's for roughly the same price.
CM SilentPro 700W
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4434988&CatId=2533
To be honest though Newegg has a better selection and prices imo.

 

[metroidmen]

So is the problem that the power supply is defective or not outputting enough power?