Socket Adapter Brings Pentium M to Desktop
EconolineCrush writes "Intel's Pentium M processor is widely regarded as the company's most compelling chip, and although desktop versions of it won't be available until next year, a new adapter from Asus allows users to run a Pentium M on existing Socket 478 motherboards. When coupled with a compatible motherboard, the CT-479 adapter is much cheaper than existing Pentium M desktop platforms, and also offers better performance by allowing the processor access to dual-channel memory configurations. Considering the Pentium M's frugal power consumption and great clock-for-clock performance, this could be an interesting upgrade for those looking for a low-noise system."
The Amiga had such a board way back when, a generic CPU emulator that used FPGAs to emulate multiple processors. It could supposedly emulate a Mac faster than a real Mac (probably using the Amiga's CPU, though). They were still trying to get 486 emulation debugged last I heard, many moons ago.