I too am in the same boat here, with (I think) the same motherboard.
The Pegatron M2N68-LA (Narra5) GL6 is an AM2 board, which supports AM2+ and therefore TDP's of no higher than 95watts.
I was looking at the 925 which would fit all the bills apart from the fact it's an AM3, which without a Bios update, wouldn't work. I think that all models beyond the 925 are 125 Watts or higher, therefore the 925 is probably the highest Phenom ii you could upgrade too.
I'm considering upgrading my CPU which is a Phenom i x4 9650, and I don't quite know if there are any bios updates for the board to allow AM3's.
Does anyone know if there are Phenom ii's that are AM2+ at 95 watts that would be worth upgrading from a 9650?