500 watt GPU with a 600 watt PSU?

600 Watt Psu

I no that people have Corsair 750 watt PSU and they can run 2 of those cards in SLI, keep in mind that it is not going to be running at full load consuming 500 watts. From what I've heard 375 watts is what the card will run at when your playing your games if it even gets that high.

So I would say your good to go!

The 500 watt psu is a minimum system requirement, 600 watts is better still.

EVGA NVIDIA GeForce GTX 670 2 GB GDDR5 Graphics Card

256-bit, 2 GB GDDR5 Memory with 6008 MHz 915 MHZ GPU Clock Speed

1344 CUDA Cores Microsoft DirectX v11 PCI-E 3.0 x16 Bus Std

2560 x 1600 Maximum Digital Resolution Memory Bandwidth 192.26 GB/sec

1344 CUDA Cores 500 W Power Supply Required NVIDIA 3D Vision Support

2 Years EVGA India Warranty and Free Transit Insurance that's it.

1 ) FORSA NVIDIA GEFORCE GTX670 2 GB GDDR5 GRAPHICS CARD

3 Years EVGA India Warranty and Free Transit Insurance

2 ) ZOTAC NVIDIA GeForce GTX 670 (ZT-60304-10P) 2 GB DDR5 Graphics Card

256-bit, 2 GB GDDR5 Memory with 6008 MHz 954 MHZ GPU Clock Speed

1344 CUDA Cores Microsoft DirectX v11 PCI Express 3.0 x 16 Bus Standard

2560 x 1600 Maximum Digital Resolution Memory Bandwidth 192.26 GB/sec

1344 CUDA Cores 600 W Power Supply Required NVIDIA 3D Vision

Support 3-way NVIDIA SLI Support NVIDIA GeForce GTX 670

Other System Requirements 170 Watt Maximum Power Consumption !!!!

So, get ASUS NVIDIA GTX 670 DC2 2 GB GDDR5 GRAPHICS CARD

& Corsair CMPSU-800GUK 800 Watts PSU

ok.

I would look at 700w minimum for a build like that .

Thermaltake have a good power supply calculator here: http://www.thermaltake.outervision.com/