bendsley, well done, quite the informative piece of work you have there. I am impressed.
For my debian pure64-bit install at least those extra registers have made all the difference in the world. It's really quite amazing the amount of speed that I picked up from going from a 32-bit install to a 64-bit install. But with the new Pentium 4's getting the amd64 extensions (or x86-64, whatever floats your boat), the only top-tier x86 platform that isn't going to have them is the Pentium M.
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