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Author Topic: My PSU only has 6 PCIe slots! Solution?  (Read 1564 times)
ssateneth
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September 23, 2012, 09:09:23 AM
 #21

I would be careful using molex to PCI-E power. That is an awful lot of power to be supplied from a single wire (you're essentually splitting 12v power from 1 dinky wire into 2 or 3 depending on the adapter. Most are two). I like to stick to PCI-E power splitter adapters since you're drawing from THREE 12v wires and you have an extra ground compared to molex's 2 grounds.

http://www.newegg.com/Product/Product.aspx?Item=N82E16812198018

I have 16 of these and I love them. It takes in a 6 pin PCI-E power connector and gives you 2 6+2 pin PCI-E power. They're awesome.

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praxe
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September 24, 2012, 02:20:19 AM
 #22

I'm pretty sure that won't work because my PSU (google "ocz" 1250watt") has 8 pin pcie slots and not six.

What about this? http://www.amazon.com/CableHero-8-Pin-PCI-Express-Adapter-Y-Splitter/dp/B0021ZQK6A
ssateneth
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September 27, 2012, 03:13:52 AM
 #23

I'm pretty sure that won't work because my PSU (google "ocz" 1250watt") has 8 pin pcie slots and not six.

What about this? http://www.amazon.com/CableHero-8-Pin-PCI-Express-Adapter-Y-Splitter/dp/B0021ZQK6A

It works just fine with 6+2 pin. If your power supply is stricty supplying 8 pin PCI-E power (no breakaway 2 pin ground) then it's probably a bad power supply with no foresight. My rosewill capstone 450 watt comes with 2 6+2 pin PCI-E power plugs, and I use 2 of those splitters to give me 4 6+2 plugs so I can power 2 radeon 5870's.

The extra 2 pins are just grounds, and almost all power supplies just piggy back those 2 grounds onto the existing 3 grounds of a 6 pin PCI-E power plug. It's safe.

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