The worst graphics card I have ever seen

I used deffirent kinds of graphics cards but I found that the worst video cards are always the Intel's ones. These cards are slower than the NVIDIA and ATI cards and they cause many troubles with games and also slow your computer. I tried the AGP cards and also the PCIe cards and found that the Intel graphics cards give bad images in games and the they deliver only 60-70% of the ATI graphics cards performance. Intel used to put its graphics cards on its chipset to force the user to use them but now Intel introduced new chipsets without its graphics cards but at high cost. I advise you NOT to use the Intel's graphics cards as they cause high temperature inside your PC and you will find that the motherboard temperature will reach over 45'C while playing games and you will notice that games run slower  than they should. So, the best solution is to use the ATI or NVIDIA graphics cards and disable the Intel one in your PC if it is on your motherboard.