$1700 gaming build.

CPU: Intel Core i5-2500k $220
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CPU Cooler: Cooler Master Hyper 212+
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Mobo: Gigabyte Z68X-UD7-B3 $345
http://www.amazon.com/gp/offer-listing/B004ZQ6F54/ref=d...

RAM: 2x Kingston Hyperx 8GB DDR3 1600MHZ $98
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

GPU: 2x EVGA SuperClocked GTX 570 $696 [$25 MIR available]
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

HDD: Samsung Spinpoint F3 $60
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CASE:NZXT Phantom Black $125 [15% off promo available until 8/14]
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PSU: Antec HCG Series 900W $130
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

OPTICAL: Some $20 DVD Burner

$1703 including shipping/ Around $1624 after MIR and promo.

You're free to make changes. You will be able to crossfire/sli at dual x16 so you get the best out of everything. The i5-2500k is a complete beast in games and hyper-threading from the i7 won't matter because games don't use it. You may opt for a single GTX 590 instead and a slightly bigger power supply to handle overclocking and sli comfortably [preferably 1000w]. It's all up to you. I tried to avoid shipping costs so you'll get more for what you pay.

Edit: Added aftermarket heatsink almost forgot  

Cool! Thanks a lot. Soo, are sli gtx 570 better than a single gtx 590?

Yes gtx 570 sli will run better than the gtx 590 but you'll get less upgradeability since you'll already be using more slots than the 590. The motherboard has 4 pcie 2.0 slots though so you'll probably be fine. I also think the GTX 570 sli will handle anything you throw at it. I think you will be fine with Crysis 2 at directx 11 with high settings.

http://www.tomshardware.com/reviews/crysis-2-directx-11...

Do you think I need an additional fan if I go with a bigger power suppy or will the cooling be fine?

The cooling in the NZXT Phantom is adequate.

Also, I'd suggest splurging less on the Motherboard (keep it below $200... beyond $200 offers tragically diminishing returns) and instead going for a cheaper P67 board (I recommend the EVGA P67 SLI 130-SB-E675-KR) and, with the money you'd save, buy a 64 or 120gb SSD.

Are you sure about the EVGA P67 SLI 130-SB-E675-KR? Would it be compatibale with my parts without bottleneck? What are the benefits of the Gigabyte Z68X-UD7-B3 compared to the EVGA P67 SLI 130-SB-E675-KR? Thanks.

Go to slickdeals.net for newegg coupons.

If I buy a 120gb SSD should I still get the HDD Samsung Spinpoint F3? Or is it meaningless to have both an hdd and ssd?