Do I need a new PSU?

[jakescakes]

hey guys, well my system has been acting up lately, ever since I got my HIS 5850, and I'm assuming it's the PSU....

The problem happens when I play games, or run "rthdribl" stress test. Also When I run the stress test my PSU makes a LOUD buzzing/whining noise and will crash almost immediately. But the problem is my monitor will black out for a few seconds then come back on. It will do this continuously when gaming. Sometimes it will crash and the monitor will stay off. Sometimes it stays blacked out for a few seconds then the mobo beeps. It has also crashed completely on me twice.

PSU- ultra x connect 550watt
q6600 - 3.2ghz noctua cooler
HIS 5850
2x sata 320gb
2GB RAM
1 dvd drive
sound card
2x 120mm led case fan



Does this sound like a PSU problem. I've been looking into a new one, any recommendations? Will the HX650 be a good choice????


http://www.newegg.com/Product/Product.aspx?Item=N82E16817139012


http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341018

 

[Spare-Flair]

Strange note about your PSU here, says you might need to put more load onto the 3v and 5v rails to get stability on +12v rail
http://www.legitreviews.com/article/368/1/

 

[Zero82z]

It certainly could be a PSU issue. In any case, that PSU is pretty crappy, so it would be a good idea to replace it with a quality unit. Something like this would be a perfect fit: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371035

 

[friend'scatdied]

Someone else brought up a PSU issue with a similar GPU upgrade, where they also had an overclocked Q6600. Those things suck a ton of power.

 

[Dangman]

Something like this would be a perfect fit: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371035

I'd go with this unit instead for a little extra power:
$75 - Antec Earthwatts 650W PSU

 

[hossdaddy]

I'd go with this unit instead for a little extra power:
$75 - Antec Earthwatts 650W PSU

+1 to Danny's suggestion.

 

[jakescakes]

Thanks for all the replies guys. I always knew that line of Ultra PSU's weren't great, but you know I kept it around because it was so damn pretty :\

Anyways, I went to MicroCenter last night and picked up a Corsair HX650 to test the power supply theory. So far so good! I played TF2 for hours with no symptoms at all. I also ran the stress test for a few minutes and it seems stable. No more noisy PSU and overall things are quieter and cooler.

Forgot to mention that I am stuck on modular PSU's. So I might just keep the HX650 or get one off newegg since it's $50 cheaper than what I paid.