i have a dell optiplex gx620 sff. I heard that to get a new motherboard for a dell you need to order from dell cause thats the way it works. Is that true? Also i couldn't find any good motherboards to fit this case. i basically want to upgrade my mobo so i can get a better cpu than a pentium 4 3.00ghz. Also i have a 300 watt power supply. If i need to i can get this case that come with a power supply http://www.amazon.com/Rosewill-Finished-MicroATX-Computer-R363-M-BK/dp/B004ASW73G/ref=sr_1_1?ie=UTF8&qid=1392301574&sr=8-1&keywords=case+computer+with+power+supply