Originally Posted by Calin Banc
Not really, it depends. In Skyrim, at least with v-sync ON, more power (meaning less/low GPU usage for 60FPS) usually means more stutter. In some games that works, more power, less lag or stuttering.
Yeah I've noticed that, running CFX on Skyrim increases my stuttering notably because the GPU usage on both chips is around 40%.
When running a single GPU it goes up to 80%-90% and it "seems" smooth.
Still can't figure out why quadCFX doesn't work on Skyrim but this doesn't concern this topic.