Two things:

First: Why wont my board boot and run stably with memory linked? I am at 1800mhz FSB with 800mhz memory right now (unlinked) and have tried linked 5:4 and synced (with loose timings 5-5-5-15) and both are not stable.

SEcond: have to hook my GPU cooler fan up to mainboard (wrong connector for GPU). It's the two aux fan connectors at the bottom of the board installed. How do I control the fan speed with them? How do I lower settings or voltages on those connectors?