Yeah if you get an AM3 CPU you must use DDR3 RAM. You're going to want at LEAST 4GB for BF3.
As for your BIOS verison, I'm looking at the supported CPUs and honestly, according to Tom's Hardware Gaming CPU Hierarchy Chart, that 6-core CPU will get you the same amount of gaming power as the 955 Black Edition Quad Core, and the 955 is $60 less. According to the chart you linked to Gigabyte, if you flash your BIOS to version FA, it will support the 955 Black Edition, granted that you buy DDR3 RAM to go with it.
http://www.newegg.com/Product/Product.a ... 6819103808I loved this CPU. Only reason I got rid of it is because I'm a stickler for max settings AND recording, and this CPU couldn't handle both at the same time maxed out.[/quote]
Thanks Crimson, I've been wondering about this for a while now, I've seen several people with my mobo saying they had DDR3 and it always pissed me off cause I couldn't figure out how they did it and now I know! thanks again Crimson.