Yes, but the 133 would only run at 100 speeds.
Most of the time, yes. All the RAM will run at the slower speed. The are some motherboards that do not like mixing tho.
Yeah, What they said..You might as well give it a try, but RAM will have to be run @ PC100 speed. Would work fine with a Celeron (any flavor), PII, PIII or athlon as long as they are of the 100mhz FSB variety..