How much power for this

[Zeauz]

CPU:i5 2500k
cooler:cooler master hyper 212 plus
motherboard:ASRock Z68 PRO3 GEN3
Dvd drive:Asus 24xDVD±RW Serial ATA Internal OEM Drive
ramNY Optima 8 GB (2 x 4 GB)
GPU:Sapphire radeon 7870
HDD:1xSeagate Barracuda 7200rpm 500 GB

 

[constepatdyak]

CPU:i5 2500k
cooler:cooler master hyper 212 plus
motherboard:ASRock Z68 PRO3 GEN3
Dvd drive:Asus 24xDVD±RW Serial ATA Internal OEM Drive
ramNY Optima 8 GB (2 x 4 GB)
GPU:Sapphire radeon 7870
HDD:1xSeagate Barracuda 7200rpm 500 GB

Hello. With that setup a 750W will be enough with ample headroom for CrossFireX upgrades. Good day.
I recommend a Corsair AX750 http://www.newegg.com/Product/Product.aspx?Item=N82E16817139016&Tpk=ax 750

 

[Zeauz]

Best answer selected by Zeauz.