I just bought a laptop and it comes with Intel Celeron 1007U
 

http://configure.dell.com/dellstore/...=dhs&cs=cadhs1

Is this good enough for the following

- Very light gaming
- YouTube HD
- Web programming

thanks a lot everyone

Well, I would ask in first place if in doubt, then buy ... but it may be sufficient. It is not fantastic and, if your reference to the configuration is really the reference about YOURS coming computer config, then I would say 5400rpm hdd is much weaker guy there. Also I'm not sure what does exactly mean "YouTube HD" but if you have a camcorder and want to have AVCHD 1080x50p (or 60 if NTSC) then the processor is just slow. The latter format works reasonably well (w/o re-coding into something simpler) only starting from 2.3GHz with 3MB cache, no matter how many cores you have.
Good luck.