660GTX OC vs 760GTX OC Difference Large price gap

[junnyeen]

Running 1920 x 1080 games on a single monitor which would be better price/performance and what is the difference

GTX 660 OC $189
http://ncix.ca/products/?sku=76367&vpn=GTX660-DC2O-2GD5&manufacture=ASUS&promoid=1284

GTX 760 OC $259
http://ncix.ca/products/?sku=85587&vpn=GV-N760OC-2GD%20REV2%2E0&manufacture=Gigabyte&promoid=1284

 

[Bushmaster]

Much improved performance and overclocking ability (the gtx 660 is voltage locked).

http://www.techpowerup.com/reviews/Gigabyte/GeForce_GTX_760_WindForce_OC/27.html
http://gpuboss.com/gpus/GeForce-GTX-760-vs-GeForce-GTX-660