I've got a 233mhz MMX subnotebook (Toshiba Libretto) from 1998 that's still going strong, I swapped the HD out for a CF card and put Win2k on it. Quite the original netbook, given a WiFi card.
The 110CT you describe is an awesome machine I've got 3 of the things. They're about the size of a VHS cassette which is tiny compared to even netbooks today. Recommend the rarer 64mb machine not 32mb though, then stick a PATA 7200RPM drive for capacity or a very high bandwidth CF card within a 2.5" IDE to CF all in one housing designed for legacy notebooks and stick XP* on it...job done....and works great with VICE for portable C64/VIC20/C16 goodness!
MMX was 3rd generation Pentium after the initial 60/66/75mhz models then the 100/120/133mhz stage. There was even a hybrid 300mhz MMX for notebooks only too. MMX does give a significant advantage for things like MPEG decompression even @ 166mhz. Some of the benefit will be the improved speed and size of the L1 and L2 cache too though.
(XP needs a lot of tweaking for the Libretto P1MMX models but it can be done and is worth it if you have USB PCMCIA cards (or USB dock) in them for the convenience of XPs bloatware driver directory onboard)
