That I didn't know. I'll have to look for those tests. Generation wise, I'd have expected a 4650 to equal a 3850 in power but be DX10.1. That's because the 4850 outperforms it's older sibling and I'd expected to see similar boosts in performance at the low end.
Sigh, I guess they're aiming the 4650, like the 3650, at the HTPC market. I'd read about a new AIW card and hoped it would be a 3850, but rumors say it will be 3650 (haven't checked to see if it's out yet).