Well...I just switched my
PC on without the PCI-E power connector plugged into my graphics card, and I got a lovely loud continuous beep. Running an X38 motherboard with a G92 GeForce card, so the 150w through the slot should be available. There is a molex input on the board, but the manual tells me that's only necessary for CrossFire.
Btw...coil whine does not necessarily mean something is wrong. My old
PSU used to coil whine like mad all the time, but it was rock solid.
Is this not down to raw power, but rather amperage, which the slot cannot provide? I don't really understand the relationships between volts, amps, watts etc. (sleeping in high school physics
) so correct me if I'm wrong.