Hescara :
gustafangus :
Don't get a 7750. It aint a real "gaming" card. Get a 7770. Here's a MSI 7770 for $109. It'll run games far better than a 7750.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127687
Do you think my power supply could handle the 7770 ?
I've seen people running a 7770 on a 250W power supplies, so your 450w PSU is golden, since your CPU doesn't need much power anyway. Even a R9 280X can be run on a 450W psu, but it would stress the PSU too much and the PSU would die shortly.