Budget Gaming Build

[krashandburn911]

I am building my first gaming computer. I am trying to keep it at budget price but still keep it as forward compatible as possible so that I can upgrade. I don't need a monitor. I already bought the case and the hard drive, because they were on sale. Here is what I have come up with so far.

MOBO: ASRock Z77 Extreme4
CPU: Intel Core i5-2500K
HSF: Xigmatek GAIA
RAM: G.Skill Ripjaws X Series 8GB
HDD: Western Digital Caviar Blue 500GB
GPU: XFX Radeon HD 6870
Case: Rosewill Challenger-U3
PSU: OCZ 650W

The motherboard and heatsink are in a combo for $150
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.1022364
The power supply and memory are in a combo for $105 + a $20 gift card
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.1031210
The processor is $200
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115072
The graphics card is $135
http://www.amazon.com/gp/product/B005C31F2M/ref=ox_sc_act_title_2?ie=UTF8&smid=ATVPDKIKX0DER

 

[Wisecracker]

More video card -- less mobo/cpu

 

[krashandburn911]

I plan on sticking with the mobo and cpu cause I really like the mobo for upgrading later. I was looking at upgrading the video card but I saw somewhere that if I got two of the cards I listed and ran crossfire they would be good. Would that be worth it?