Noriaki,
You don't like my math huh, there were more than a few OEM mb's w/95MHz buss default speeds.
In fact I have a second Compaq pc w/95MHz and 100MHz buss speed settings.
oldfart,
The voltage setting is 2.2v, but can be run somewhat higher, especially when over-clocking, you can get by w/modest voltage increase.
What's the lowest voltage your Shuttle HOT will support?
Also, you can set the multiplier to the "2" setting and the cpu will automatically see it as 6x!
I would not be surprised at all if you could get 5.5 x 75MHz, in fact w/extra cooling I would expect 5, 5.5 or possibly 6 x multiplier.
You can check the Forums at
www.amdzome.com/ then go to BBC, K-6X and you can check w/the guys there if your mb is on the list.
They are mostly oc'ing K6-III+ cpu's but generally if the boards will accept the K6III they will also work w/the K6III+.
Go for it if you can, there is a major difference from the K6-II to the 256MB on die cache of the K6III, you can't loose for $29.!