Celerons are only crippled (over the PIII in one regard) L2 Cache When you dual process you get no gain for cache levels over 256K Toms Hardware and others have verified that Dual Processed Celerons are equivalent to Dual Processed PIII Celerons are supposedly not dual Processorable but they are if you get a Slot1 motherboard, buy socket 370 Celerons and use a slocket. The slocket has a jumper (that's it Intel cut just one line inside the Chip) that allows the Celeron to do this neat little trick. If you are confused it is because Intel purposely likes you in the Dark. At least in shadows. :)