I'm planning to build a low-power, value HTPC. I'm really undecided if I should go for an 80PLUS Bronze Seasonic PSU OR a laptop adapter from Cooler Master (Energy Star certified).
SETUP 1. I go for the laptop adapter. I'd have to choose a special Intel mini-itx mobo (DH61AG) which is pretty expensive. Mini-itx mobo + laptop adapter = very low power
SETUP 2. I go for Seasonic PSU. I get to choose any cheap micro-atx mobo. Micro-atx mobo + Seasonic PSU = low power but a bit more than the above setup, far less expensive
(SETUP 1 has a mini-itx mobo which consumes less power than micro-atx, not to mention a very efficient efficient power adapter)
I will be pairing the mobo with Sandybridge Pentium G620.
The big question is - is SETUP 1 really going to save me a SIGNIFICANT amount of power (in terms of watts) over SETUP 2?
For a quick reference, see the power measurements here DH61AG