The lovely Pentium MMX 166Mhz system. Unfortunate that the motherboard does not support the turbo button option. The speed LED is programmed to show 166. I'm actually considering installing my 386 motherboard
Intel Pentium 166 MMX mobile SL26T TT80503166 CPU module with heatsink | eBay
x86 cpus' Guide - View details on Intel Pentium MMX 166 CPGA