Is this a good game streaming computer

i put together these parts, but before I buy them and assemble them I want to know whether they are up to the job of streaming high end games like arma 2 and hitman absolution.

the parts are.

i5-3570k quad core 3.5ghz 6mb cache
Asus P8Z77-V Motherboard
16Gb Kingston hyperx ram

seeing as I already had one readon 7750 I thought I would get another an
crossfire them.

750w psu

thanks in advance