Ok so I have a old pc and I took it part to find out that it has a Radeon 9550 in it! I also have a dell Inspiron 3847 desktop that i use for small gaming now. The dell has 8GB of ram, 1TB of hard drive, integrated graphics, and is Intel i5!!! Right now the games i play such as TF2 runs perfect 100FPS all game. But games like Planetside 2, BO1/2/3 and BF4 are running on Low to medium setting with a little lag like 30-40 fps. I wanted to know if I put in the Radeon 9550 will it just slow down my gaming or increase it a little bit? So please i could find anything this is my last resort for help! Tell me should i use the Radeon for now or use stock and play with the little lag!