Hmmm! Nice motherboard, Tiny. Also, and interesting one because the RAM affects the bus speed on this board. According to the MSI technical specs, we should find out what your RAM is (DDR266, DDR333 or DDR400) and who is the manufacturer. Apparently, on this motherboard, the BUS speed adjusts itself down or up, depending on the kind of RAM you have. A lot of the RAM manufacturers whose product is approved for use on this board only run at 512 or 533, thus slowing down the entire motherboard processing by a great deal - enough to account for the minor gain in rendering time you are reporting. So, can we trouble you for this informat on your RAM also. Incidently, here is one URL for your motherboard, so you can go take a look at this yourself. http://www.msi.com.tw/program/products/mainboard/mbd/pro_mbd_detail.php?UID=433