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PCI-E PSU?

C

Cook1

Diamond Member
Ok, so I'm confused here.

I thought if you're using 2xPCI-E cards in SLI that both cards take the normal 4-pin molex connector then another 4-pin molex connects to the motherboard itself. But I see people selling their PSU's because they went to "PCI-E". Are there different connectors for PCI-E in SLI? Cause I just bought a new PSU and if it doesn't have the capability then I'm not going to do SLI.

 
Your psu will work fine. PCI express power supplies are just a marketing term. You can buy converters that convert two molex connectors into one pci-e conector. Here's one Text
No molex connectors go into the motherboard. You might be thinking of the extra four pins that 939 boards use. If you only have a 20 pin connector, buy this Text
 
You sure? I was told that when I want to go SLI I'll have to connect a four pin molex into my board. My board is a 24-pin, have the Asus A8N-SLI Deluxe using the Forton Blue Storm 500W PSU.
 
With a A8N-SLI you will need a modern PSU and one molex will go into the mobo, a 4 pin aux connector next to the CPU and a 24 pin main power connector. There are some PSUs that have two 6-pin power adapters built in for PCIe graphics cards, but you can also use the included molex -> 6-pin adapters (that usually come with the video cards) to get power to them. But if you are going SLI I recommend to get a high quality PSU from OCZ or my preferred choice PCP&C to guarantee stability and to make it easier as they have dedicated lines for each graphics card.
 
No, you don't have to connect an extra four pin molex to your board. (There is one exception with the DFI boards where they offer a chance to connect an extra connector for extra stability)
 
is your PSU 24-pin? Cause while the PCIe power connectors aren't that important, and a converter will be fine, a 20-pin PSU is not adequate for an SLI setup. Asus says the 4-pin EZ-plug allows you to use a 20-pin PSU, but they don't recommend them for high end video cards (6800GT, X800, etc.) or SLI setups. For these, you need a 24-pin PSU.
 
I have a 24-pin 500W Forton Blue Storm PSU, I'm more then positive this PSU has enough bang where it needs it to run a SLI rig.

 
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