Quote:
Originally Posted by Supergrover Last two boards I have owned use the extra molex 12v to the board, @ would be just as nice for multi-gpu's.
Though to be honest I never noticed a difference plugged vs unplug one board was 2x275's sli'ed the other was 2x 275's non sli.. I noticed not extra overclocking headroom from and component. I though unplugging the molex might cause a little vdroop to the cpu but no change. But again if the board has it I would use it, better safe than sorry IMO. |
They are mostly there to keep the ATX power plug from melting. Some GPU's (Usually any generations highest end highest power draw card) can draw more then ATX specified from the PCI-E slot, and cause the molex to physically melt on the 24 pin connector.
It is fairly rare, and easy to identify as a possibility of happening to you (say) if you run Tri-SLI, no molex/power adapters on the board, etc