Crossfire 7970's with Seasonic M12II-620?

[aka007]

Is it possible to do so? I'm looking very highly in the no section for this. If not, what power supply would be needed so that I could crossfire two 7970's, maybe overclocked, and an overclocked 3570k?

Specs to consider:
Intel i5 3570k 3.4GHz
ASRock Z77 Extreme4
Gigabyte 7970 3GB(soon to be two)

 

[AZCompTech]

That PSU will be able to handle the load. The power draw of this build is about 530 watts, so it should stay under the 620 the PSU provides.

 

[aka007]

That PSU will be able to handle the load. The power draw of this build is about 530 watts, so it should stay under the 620 the PSU provides.

What about with overclocking the CPU and GPU?

 

[AZCompTech]

If you plan on over clocking, you should get into a good PSU in the 750 range.