When I bought my AMD R7 240 4GB, I firstly installed Windows 7. The first game that I installed was NFS 5 Porsche. I launched it and when I went to maximize the settings, I saw that there were no resolutions available in the "Screen Size" list. I went furhter, maximized everything and when I launched a race, before the Loading screen to appear, it gave me an DX7 error. The same applies to Vista. XP is a bit different here, it has the 640x480 resolution, but it's the only one available. I was able to play this game on: GeForce MX4000, Intel Chipset 945 Graphics, Intel HD Graphics from Pentium B950 (but it wasn't able to display correctly the Speedometers in the car and the Number Board on the back of the car and the front), Intel HD Graphics from Intel Pentium G i-don't-remember-the-number 2.9 GHz (but having the same problem as the B950 one) and GeForce GT630 (but having the same problem as the Pentiums + repedeatly pressing the horn when horning and repedeatly animating the "changing gears" when... changing gears). This is the first graphics card that can't play the game, only on XP.