You can plainly see how much the WinChip sucks.  First let me tell you
all my sources.  The benchmarks are from the WinTune database at
www.winmag.com and are the average ratings of all the user submissions.
The watts are from the respective processor datasheets.  The prices are
from www.pricewatch.com .  These are all socket 7 CPU's and with the
exception of the WinChip are dual voltage.  That means you will have to
either buy an adapter (or an OverDrive version CPU) or move around some
surface mount resistors (not for the faint of heart).  The cheapest
adapters I have found (I've mentioned these at least twice before) are
from Concept Manufacturing (http://conceptmfg.com). They make a voltage
and clock multiplier adapter (http://conceptmfg.com/universalreg.html)
for $40 which includes a fan and heatsink.  You can't go any faster than
400Mhz because 6x is the highest multiplier on this adapter.  Wattage is
a big issue and it is not known yet how much more the i-opener power
supply can handle.  So far the Intel 233MMX has been reported to work.
Since that CPU takes up 17 watts it is safe to save that the AMD k6 2-266
and 300 will also work.  It seems that the K6 2-300 (at well over 2 times
the speed of the winchip) gives you the most bang for your buck.  And if
it turns out there is enough wattage for the 333 then you might as well
spend the extra $3.  You will probably have to cut a hole in the back of
the i-opener to let the CPU fan stick out for some of these hotter
running CPU's.  You will also need to find away to get 12 volts to the
fan.  Although, 5 volts will power the fan but maybe not cool the CPU
enough.  The fan problem can be solved if you opt for the Intel OverDrive
200MMX processor which gets it's fan power right from the socket.  You
could probably snag one of those for $40+ at an auction (and you won't
need the adapter for the CPU, because it is built in).  Well, that's my
good deed for the day.

---Rick