Help Choosing Graphics card

[zMarkb]

Hello,

I am building a new pc and i will be doing a 3 24" monitor setup. I am having a hard time deciding on the Sapphire 7950 or the 7970 GHz.

Shoud i just choose the 7950 and over clock it or go with the GHZ edition.

 

[zMarkb]

Also here is my Build info.

i5-3570k
ASUS P8Z77-V DELUXE Mother Board
120GB SSD
2tb HDD 7200rpm
Seasonic 850W Power Supply
Kingston HperX 16gb Ram