A 7950 is gonna cost you maybe $150 on ebay so it will cost you $150 for two
Selling yours for $150, and getting a 960 will cost you another $50.... however, you get a $60 game coupon so that option essentially outs $10 in ya pocket....
Selling yours for $150, and getting a 970 will cost you another $170.... however, you get a $60 game coupon so that option essentially costs you $110 and is faster than the other 2 options.
Either way, whether you were gonna get the game or not, I like the 970. Getting 2nd 970 say 18 months down the road, will keep you in happy gaming land for 3-4 years. SLI performance on the 970 is incredible:
@c 1440p
Tomb Raider goes from 29.8 to 58.7 an increase of 96.98%
Battlefield 3 goes from 62.1 to 121.4 an increase of 95.49%
Far Cry 3 goes from 35.6 to 68.8 an increase of 93.26%
Crysis 3 goes from 22.5 to 43.3 an increase of 92.44%
Thief goes from 70.8 to 136.1 an increase of 92.23%
Bioshock Infinite goes from 76.7 to 143.9 an increase of 87.61%
Splinter Cell: Blacklist goes from 49.5 to 92.2 an increase of 86.26%
Battlefield 4 goes from 45.0 to 83.2 an increase of 84.89%
Metro LL goes from 40.7 to 74.6 an increase of 83.29%
Batman: Arkham Origins goes from 81.8 to 148.3 an increase of 81.30%
Watch Dogs goes from 50.0 to 85.1 an increase of 70.20%
Crysis goes from 44.1 to 74.0 an increase of 67.80%
Grid 2 goes from 84.6 to 141.8 an increase of 67.61%
Assassins Creed goes from 37.5 to 61.8 an increase of 64.80%