I had the Celeron 430 in my

I had the Celeron 430 in my son’s PC; it was a freebie computer from my wife’s workplace.  I used it for him to watch ripped DVDs in Media Center and to watch stuff recorded from my HTPC.  It worked well.  I think what it comes down to, is this a cpu you already own?  Or are you thinking of buying this cpu?  If you already own it then I say, yeah, use it.  But as others have mentioned, if you’re buying then there are much better choices.  I never tried a full size bluray because I was using a wireless adapter in his computer, and my network just won’t handle a bluray over wireless.  But I was able to play a bluray that I ripped down to DVD-9 size using DVD Fab.  I was using the Celeron 430 along with a 4550.  It did play fine when watching HD recordings made from ATSC.