which one should i buy 7700,7770,6850or6870 for gaming

im using a 600w psu and im using a 1080p montior , just want to know which one can run MW3 on max(1080p) and other game on high !!thanks

6870 best performance

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OK thanks but can 6870 run mw3 on Max 1080p and other games on high?

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MW3 ok avg 8x fps
Battlefield 1920x1080 highQ 5x fps

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overall 6870>7770>6850

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the price of 6870 is $200~300 higher than 7770. I think 7770 is good enough for gaming. my XFX 7770 normal edition can OC up to 1110/5200mhz which is super cool with that aluminium heatsink. 37c in room temp, 6x when full load in High quality BF3 and it's smooth enough. thanks to 28nm core.
alternatively, you can pick 560SE 336 Cores with the same price. Performance might be a bit better. but for the sake of noisy fan and color perference, I would rather choose 7770.

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