Does processors improve graphic cards? Hey! So I'm looking at a whole bunch of HP computers to buy and I notice that all if them have the "Nvidia GTX 550 Ti 1GB" graphics card. A quick research online showed that it received mixed-slightly positive reviews and this got me thinking... Why would they add this graphics card to a i7 3.4 Ghz $1500 computer? Does the awesome processor improve the graphics card? Or am I about to buy a PC with a weak graphics card that I'll have to replace soon? Thanks!