Hi,
went googling and found this GTX 650 ti, looks kinda good with just about 20% less performance than the HD7850 in most games and runs for just 40 Watts more than my GT 440.

Is it a good card? It got 9 out of 10 ratings in games-debate.com but is it suitable?
The bench scores i got from anandtech.com
btw, is a Gigabyte PowerRock 500w a good PSU? it has an 80+ Bronze score and quite cheap at my place.