So I have some spare parts lying around -- an Athlon II X2 250 and 8GB of DDR2. I'm running OpenSuse on my backup server, but would like to throw something on the spare box. When I had previously tried out Ubuntu, the 64-bit support wasn't that great. Is it still the same? I'd like to utilize all 8GB properly, but would go with 32-bit and 4 GB if I had to.