ASHISH65
Technomancer
GTX 650 amp! is almost equal to 7790, slightly noisier and requires more power. But considering Next-Gen, it has insane overclocking abilities, notching up performance by almost 10-15%. In a year or two, 650amp will be better purchase. Also, since is more than an year old, you should look at local retailers for better deals rather than buying online.
It is gtx 650 Ti AMP > hd 7790 , not 650 amp
Gtx 650ti boost/Hd 7850 > Gtx 650ti AMP > Hd 7790/gtx 650ti > Hd 7770 > gtx 650 amp