It appears that they're the same board. In the detailed description on the Fry's website it calls the board the ud5p. Because the frys site doesn't give much information I can't be sure. If I had to guess I would say its an in store special they're having.
That's what I thought too.
Must just be a sweet deal going on right now.
Guess I know where I am headed
If you look on the gigabyte website you won't find anything on a UD5. The only model they have under AM3 790FX socket is the UD5P. Guess you found a good deal!