I'm looking to treat myself to a new desktop and am wondering whether it's worth getting the fastest RAM I can afford. I'm thinking the memory may be the main bottleneck for systems? I know the actual bottleneck is the harddrive, hence I'm looking at a Raptor, nothing more I can do in that regard unless I venture down the RAID route, which I'm not. Any thoughts on the speed of RAM effecting system performance? Thanks.