I have a Dell T1500 with a 350 w supply. I have been upgrading for gaming (Battlefield 4) by adding 8 gigs of ram, 256 gig SSD and a GForce GT 640. It plays well but a friend gave me a EVGA GTX 550 ti which requires a power connection. I don't have any spare connectors and have been wanting to bump up my power supply. Can anyone recommend a supply that with actually fit properly and won't break the bank?