With a bit of a voltage bump, you can overclock those 66Mhz bus speed Celerons to the 100Mhz bus.
Also, that 566 Celeron is probably not as fast as a 500 Mhz P3 despite the clock speed advantage.
The P3 has more cache and a faster bus.
Look for a 1Ghz Coppermine P3 FCPGA. You can find them all over Ebay for about $10.
I upgraded a Dell GX something or other with a slocket and a newer Coppermine P3 and it ran well enough for my wife to use it for her main machine until I built a new machine last year. My parents still use it.
Also, that 566 Celeron is probably not as fast as a 500 Mhz P3 despite the clock speed advantage.
The P3 has more cache and a faster bus.
Look for a 1Ghz Coppermine P3 FCPGA. You can find them all over Ebay for about $10.
I upgraded a Dell GX something or other with a slocket and a newer Coppermine P3 and it ran well enough for my wife to use it for her main machine until I built a new machine last year. My parents still use it.