I'm in a bit of a dilemma on which cpu to get for HTPC. I will be using the integrated graphics at first. The g630 is 15% more expensive than the g550. Is the 3mb > 2mb cache and an additional 100mhz worth the 15% price increase? Also, why is g550 a celeron and the g630 a pentium? Am i missing something? Are the graphics the same?