Windows XP HE only uses 32 Bits of the processor. I want to buy this since it SEEMS to be able to speed up my computer. I want No more Slowdowns. So i wll invest in a new Graphics Card, more RAM and Windows x64. Windows XP Professional x64 Homepage Is Windows x64 Worth me buying?? Here are my Current Computer Specs: Windows XP HE 2002 SP2 AMD Sempron Processor 3500+ 1.99Ghz 448mb RAM (But really 512, dont know why it says 448) Integrated ATI RADEON XPRESS 200 160 GB HD