All depends on the application, I have 25 webservers, all the AMD X2's run circles around anything, and I mean anything Intel has out, including my Xeon, the dual Opteron makes Intel look like it is still in the stone age.
I was searching through for recoomented hardware to see if I can justify the cost of a HTPC and I seem to see there are no postings more current than around Nov 02 regarding this subject. Surely much has changed with lower-price faster preforming hardware over the past 12 months. Please fill me...
I own the SIR-150, and love it, but I think you are compairing apples and oranges. The Samsung is OTA only where tha RCA also adds sat to the mix. If you are a sports fan, the RCA is the clear choice because of HDNet on DirectTV.