I have an XPS Gen 4 Pentium(R) 4 CPU 3.40GHz. I am trying to run some newer games (like Crysis) but could only run them at lower graphocs levels. I upgraded the RAM to 4 GB and this did improve gameplay a lot. I was thinking about upgrading the video card which is currently an ATI RADEON X800 XT 256Mb which came with the system. Will a newer video card (not a high end expensive one) have a significant improvement in gameplay? Which video cards are compatable with this system?