What PSU tier would Liteon be?

[trogdor8freebird]

I believe I have this PSU, based on the model number. I'm planning on upgrading this PSU because I know my video card is a smidge too much for it to handle. I'm honestly surprised the computer stays on for longer than 3 hours.

I'm trying to find a PSU to replace it with, but I don't know how good/bad it is. I'd assume a CX 430 or Capstone 450 would dominate my current PSU, but since the Radeon 6950 2GB flashed plays games for hours before it shuts down, I may be underestimating my PSU.

Here are the specs of my system:

OS: Windows 7 x64 Ultimate SP1
CPU: AMD Phenom II x6 1045t, reversed overclock, now is stock
Mobo: GA-78LMT-S2P (Socket M2)
RAM: 8GB DDR3 CAS9/1333
GPU: MSI Radeon 6950 2GB - Flased to partial 6970 BIOS
HDD: 2x @ 7200 RPM [1TB, with 1.5TB]

 

[clutchc]

Here's a good PSU calculator: http://www.extreme.outervision.com/psucalculatorlite.jsp

Here's a tiered list of PSUs rated by quality: http://www.eggxpert.com/forums/thread/323050.aspx

But I would expect a good quality (like Corsair) PS of about 500W+ to be more than enough.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028