Had only tried to install a Q8300! On the webpage of Asrock the processor was not listed, so I got myself a E5700 dual-core is supported with 800FSB the manufacturer page! But not so! Although he is recognized correctly in the BIOS, you can see under Windows (CPU-Z and Everest) Just a CORE !!! Where's the other remained? Have all possible BIOS'es attempt (1.90 to 2.20), the problem remains!