Hi all, I've been having a MAJOR problem with my new computer that I built. Originally I had a radeon 4000 series (I don't remember the actual part) and now I upgraded to a Nvidia Geforce GTX 550 ti 2gb, and a 700 watt power supply. I have a feeling I am bottle necking because when ever I play games (TF2, Battle field bc2, Mw3, Minecraft ect) I get very bad fps drops. On Tf2 I normally get around 120ish frames and all of a sudden it drops to 1 for about 5-10 seconds and the goes back to normal. This happens with all my games. I have a AMD Athlon X2 64 5000+ Black edition. I also have 4gb of ram DDR2. If you guys or gals can help me out, that'd be great.