A1XE 800Mhz but not running yet as I have to built in myself in a PC tower taken for free from work. Man I suggest you order a complete system (MB, ram, HD, tower, graphic card) unless you want to struggle a lot. I dont have a supported graphic card (matrox G200) and a recommended PSU (235W, instead of 300W) so I have now t buy a new tower and a new graphic card plus all cables.
Lio