than the motherboard. You should start with a larger wattage power supply. If you want to do this yourself, go to a place like Newegg and look at motherboards and graphics card that seem to fit your needs and budget. Stick with brand names like ASUS, Intel, and avoid the cheapies. Newegg has customer ratings so you can use this as a guideline. I wouldn't want to try to make specific suggestions as to which product you should buy but I do have my brand favorites and so will others. Your small case will have its limitations and you probably shouldn't try to cram too much into it or you'll have heat issues.