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Windows 7: 8 Pin CPU Cable = 2x4 pin?

01 Jul 2012   #11
Phone Man

Windows 8.1 Pro w/Media Center 64bit, Windows 7 HP 64bit

Quote   Quote: Originally Posted by Tomha View Post
I got the general layout of motherboards sorted, this is just the first time ive encountered the 8 pin plug for the cpu, and my hx650 I use currently doesn't have any kind of 8 pin connector, I just wanted to be sure.
That HX650 should have the split 8 pin hard wired on the power supply. The main cable is a 20+4 and the 2nd is the 4+4. Is your unit different?

8 Pin CPU Cable = 2x4 pin?-hx650a.png

8 Pin CPU Cable = 2x4 pin?-hx650.png


My System SpecsSystem Spec
01 Jul 2012   #12

Windows 7 Professional 64bit

No, that was my bad :P I just went and checked and I do indeed have the 8 pin wired in, it looked like a 6 pin from the angle I was looking at it from.
My System SpecsSystem Spec
01 Jul 2012   #13


Quote   Quote: Originally Posted by Tomha View Post
Right, so a AX650W PSU from Corsair, comes with 8 "4 Pin Peripheral Connectors", I would just use 2 side by side on a Intel z77 board?
You will find that two of the 4 pin connectors when 'pushed together' have notches that will make it look like, and act, like on 8 pin CPU connector.

(I'm pretty sure the HX has the same)

Intel boards can run off one 4 pin CPU connector, but for better and a more even load/current distribution/draw it's always best to use the 8 pin. Especially when overclocking so it doesn't draw too much current from the one connection. overvolting on one connection can lead to burning the connection.
My System SpecsSystem Spec

01 Jul 2012   #14
Night Hawk

W7 Ultimate x64/W10 Pro x64 dual boot main build-remote pc W10 Pro x64 Insider Preview/W7 Pro x64

That would be pulling too much amperage through a connection can heat it up enough to see it melt down on you! By that time however the overheat protection circuit would likely be kicking in.

When you look at the detachable 4 pin connector seen on the main 24 pin and how that fits together that's how it would be for the twin 4 pin cpu feeds is what smarteyeball is pointing out there. On and AMD board however someone could possibly ask which of the two to plug into the single 4pin cpu feed? One or the other!

Don't fret none! The 750TX model also sees the pair of feeds on the separate rail as well but offers an extra rail for drives being a heavier supply.
My System SpecsSystem Spec

 8 Pin CPU Cable = 2x4 pin?

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