The 805 only upscales SD to 480P. It will "upconvert" it to HDMI. Many confuse upconverting to HDMI with "upscaling".
The 805 downscales over component to 720P when passing to HDMI. :( For this reason, I used "Y" cables up to my TV for my "GRRRR, MOXI Box"
The 805 passes through HDMI in the same resolution that is sent in.
For upscaling, you need the 875 or higher. Aside from a few watts, that is the big difference, as it uses Reon vs. Faroudia for video.
http://www.theosfiles.com/zzz/receiver_compare_onkyo.html
But since he went with the 06 series, I don't know about that.
Scottiemon