Should i buy the geforce gtx 660 superclocked or the gigabyte r9 270x?

[Im LuX]

I am building a computer. The specs will be:


EVGA GeForce GTX 660 SUPERCLOCKED 2048MB GDDR5 DVI HDMI DP Graphics Card 02G-P4-2662-KR


Corsair Vengeance Blue 8 GB (2X4 GB) PC3-12800 1600mHz DDR3 240-Pin SDRAM Dual Channel Memory Kit CMZ8GX3M2A1600C9B


Sentey® Computer Gaming Case Burton Plus Gs-6510 / 1mm Secc / Window Side Panel / ATX Full Tower/2xusb 2.0/2xusb 3.0 / 6 Blue LED Fans Included, Tool-less / Multi-card Reader


Microsoft Windows 8.1 - Full Version OR Windows 7 home premium


Arctic Silver Arctic Alumina 14 Gram Polysynthetic Ceramic Thermal Grease CPU Heat Sink Compound


GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard


EVGA SuperNOVA 650G1 650W ATX12V Power Supply 120-G1-0650-XR


AMD FD8350FRHKBOX FX-8350 FX-Series 8-Core Black Edition OR 8320


Cooler Master Hyper 212 EVO - CPU Cooler with 120mm PWM Fan (RR-212E-20PK-R2)


WD Green 1 TB Desktop Hard Drive: 3.5 Inch, SATA III, 64 MB Cache - WD10EZRX


Kingston Digital 120GB SSDNow V300 SATA 3 2.5 (7mm height) with Adapter Solid State Drive 2.5-Inch SV300S37A/120G

This build will be primarily for gaming. As well as video editing.

 

[clutchc]

The 270X will be noticeably faster in spite of the 660 being factory OC'd.
http://www.anandtech.com/bench/product/1039?vs=1043
I used to have a pair of GTX 660 OC cards and a pair of HD 7780 OC cards. (The 270X is the HD 7870 OC card re-badged.) The HD 7870 OC was always faster than my 660 OC card.

 

[ruecklm14]

I accidentally voted 660. I would go with a 760. Even though its a little more expensive, it will have better driver support since its newer and if you want to get a second for sli, sli kicks ass. http://www.ocaholic.ch/modules/smartsection/item.php?itemid=1168&page=7 in the games that were optimized for sli, you can get 30%+ in performance than the 780 for the same price. Also, Im just a fan of nvidia. I have never had a problem with them.