I know on Laptops its ment to drain battery. Apart from that I would love to know what made you switch back so fast
So far system running just the same TBH not run any games yet or demanding apps.
My memory is quite fuzzy but I've got a feeling it was due to the nFail chipset on this motherboard actually - I seem to remember that disabling it seemed to make the chipset unstable, tho I might be wrong, there was definitely a very good reason why I re-enabled it tho.