Help my recent 8800 gt gpu died and ive been looking around for a new one. i am completely new to gaming pcs etc so need abit of help. Ive found a ASUS GeForce GTX 750 Ti 2GB GDDR5 but not sure it will run on my pc. i have 4gb ddr2 240 pin ram. if any body could;d help me i would appreciated it a lot. thanks in advanced.