so this guy states he is using gtx 660... so id say you will have almost the same results with something cheap like gtx 750 or 250x, 260x
https://www.youtube.com/watch?v=_eWi_-d345k
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CPU:AMD Phenom II X4 960T @ X6 1600T 4GHz 1.4V+ Zalman CNPS10X Performa + Zalman STG-2
MOBO: ASUS M5A97 PRO
GPU: Gigabyte GTX660 2GB OC @Stock
RAM: 2x Goodram 4GB DDR3 1333MHz CL9 1.5V @ 1600MHz CL9 1.55V
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