erm well that build is not power hungery so change the psu to 500-600w this means you could get 8gb ram also you should be able to run any game but jsut not at max so dont expect that but the card is not terrible so yea low to medium settings , but to be fair if your going to upgrade soon just dont get that card , i mean i can run games i want with a gtx 560 got it off ebay when i have enough for a meaty gpu ill get one thats crazy but im very suprised at the power of this card its pratically running gta iv max , ac 3 max , ac revalations max ac blackflag max , grid 2 max warframe max i think the gtx 560 is more powerfull
http://www.hwcompare.com/13473/geforce-gtx-560-vs-geforce-gtx-650/
so spend less on ebayon a gtx 560 and be impressed