Some people ITT don't seem to realize that Intel recycles the Celeron name again and again. E.g., the first Celeron 900 was released in 2001 as a desktop processor, to be followed by mobile Celeron 900's etc.
The Celeron 900 in this machine is a 45nm Penryn, it scores around 2000 on PCMark Vantage. The Atom N270 scores around 1200 on PCMark Vantage. Differences in other benches are more extreme, for example the Celeron 900 takes ~30s for SuperPi vs. around ~90s for the N270...