I've seen mention in passing 60W AMD Athlon64 CPUs and 45W ones - how do I know what to order when all it says on the sellers web site is: AMD Athlon64 X2 Dual Core 5600+ CPU (AM2) Socket AM2, 2.8GHz, 1Mb cache per core, Retail Boxed with HSF Cooler or is the lower power another family altogether (and I'm getting confused yet again!!) Cheers -- Robin Gilks