Hello, I currently have a stock xps 630i desktop, and i am looking at placing a HD 5970 graphics card in the system, but i am worried about the power, it has a 750 watt power supply, but it only has 2 6 pin plugs for the PCI-E power (currently being used by 2 9800gt in SLI). I was wondering if it is possible to use a HDD power cable or something? adapters from 6-8 pin? I was hoping that i could use a HDD one with adapter or something, so i can still use 1 9800gt as a PPU... Or will i have to buy a new power supply? trying to save money. Any help would be great.
also note that the 9800gt only needs one 6 pin cable... so i use one for the 9800, and then use the molex adapter to make another one, and then convert the last 6pin PCI-E into an 8 pin.
(the only difference between 6 pin adapters and 8 pin is the amount of grounding it has)
You do not need an adapter. Like nomad said, the only difference between 6 pin and 8 pin plugs is the number of ground wires. Each has 3 yellow hot wires. The number of ground wires will not affect the amount of power that the plug can provide.
oh sweet, so i only need the molex adapter. then i will have three 6pin adapters which should run the 5970 and 9800gt!