A celeron says on the front somewhere 128k example 2.4/400/128k
A prescott says something like 2.8/800/1m
and a northwood says something like 2.4/800 (or 400,533) /512k
Basically a Celeron has 128k cache
A Northwood has 512k cache
A prescott has 1m cache..
Also celerons should say celeron right on it.
INTEL i7 930
3x2gb Corsair Dominators
EVGA GTX 480