Current PSU sufficient for new build?

[belltower]

CPU: 960T
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103995

RAM: 8GB DDR3 1600
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233202

Mobo: ASRock 970 EXTREME3
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157280

GPU: SAPPHIRE 100312-3L 6950
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102954

SSD: ADATA SATA III 120GB
http://www.newegg.com/Product/Product.aspx?Item=N82E16820211569

+ six case fans, hyper 212+, sata II HDD

Current PSU: Antec EarthWatts 500w
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007

I'd certainly like to overclock the 960T to 4.0ghz or so and attempt an unlock to five or six cores. I'd also like to unlock shaders on and overclock the 6950. I'm not hopeful that the current PSU will work so here's a potential replacement which I do have the budget for:

CORSAIR Enthusiast Series TX650M 650W
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020

I'll of course take other recommendations and general advice. This is a gaming PC intended for 1920x1080 resolution. What could I expect if I choose a 6870 over a 6950 in the next year or so? Is an SSD really worth it?

Thank you for reading all that!

 

[crewton]

easy answer: yes.

The link you provided has the antec as deactivated so are you ordering from a different place? I prefer corsair for their single 12V line as it will provide more amps than antec who likes to split the amps along 2-4 12V lines.

 

[belltower]

Apologies for the confusion; I already own the Antec.

So if it turns out that it can't handle the overclocking, the PSU will just shut off, correct? And then I'll know...

 

[crewton]

Overclocking doesn't add that much more to your system. Plus the wattage is a conservative number. Your psu is actually ~730.5W

 

[belltower]

Great! Appreciate the help.

 

[belltower]

Best answer selected by belltower.