I feel tat u can go wit the 512 and save some money....for ur resolution the 512 would be suffice....
But if u ask me then u sould get this
SAPPHIRE 100259L Radeon HD 4870 512MB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - Retail around $190
http://www.newegg.com/Product/Prod [...] 6814102810
And u don have to worry abt the fps...and the power...
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