If you go to the Giga-byte websight here: http://www.giga-byte.com/products/produ ... id=3527#ov and look at the picture of the motherboard, in the upper left hand corner next to the hole for the backplane screw it will say REV. 1.0 or REV. 2.0.Before buying you might contact your supplier and ASK what version of the board they have in stock.
Just so you know, he is referring to your DVD you will use when you install the OS. Some versions are 10.6.0 and some are 10.6.2 (meaning after you install your system will be at that release) if your DVD is 10.6.0 you will have to use a different video card at first, then you can switch it out for the higher card after you get the system to 10.6.4 and install the new graphics update.