The 2200 runs with a bus speed of 266 and the 2800 at 333. Can we assume you are using pc3200 ram and have the bus set to 333. Also have you checked the Motherboard web site to see if there is a bios update dealing with the xp2800 chip?
Best phone camera 2017
Stunning new film posters by Hattie Stewart, Joe Cruz & more
iPad Pro 10.5in (2017) review
28 astuces pour profiter au mieux de votre iPhone