I have one of the original P4s (1.3 Ghz, 256k L2, 400 FSB) and was wondering if anyone knew if these would work in one of the new 865pe chipset motherboards, with a 423 to 478 adapter of course? I want to begin an upgrade of my computer but can't do it all at once, and the 865pe chipset does support 800 FSB and HT so I can upgrade the CPU later when I can afford it without having to dump my current one.