I have an Antec TP-650 power supply which has 1 x 8pin EPS12V connector and
1 x 4 pin ATX12V connector. My Motherboard is an Asus P8Z68-V Pro/Gen3 which has an 8 pin EATX12V socket. I am unsure of which of these cables to use. Should I use the 8 pin EPS12V cable which I'm not sure is compatable with EATX12v or just the 4 pin ATX12V cable in the first 4 pins on the connector. If I do this will I still get enough power through or should I have bought a PSU that had an 8 pin ATX connector?
The MB Manual says "Don't forget to connect the 4pin/8pin EATX12V power plug, otherwise the system will not boot" so reading this it would seem ok to just use the 4pin connector in the 8pin socket. I Just want to make sure in case I do some damage. Thanks
ATX12V and EPS12V is only one pin off. But that pin is a D instead of a square, so it'll fit (D's can fit in square holes.)
If you look at the wiring, you'll see they're the same (four +12V and four ground.) If you only connect the one 4 pin connector then your motherboard will only get half the power supply it needs. Have a look at this and scroll down to the relevant paragraph. PSU connections.
If there was a "risk" of frying anything, they would have made the connections not interchangable. So you can use the 8 pin.I have the same board and am using an OCZ Fatality 500W PSU which comes with 8 and 4 pin and 2x 4 pin ATX connectors but untill I get up and have a look inside my desktop I cannot be sure if I used the twin 4 pin or the single 8 pin, I'll post back later.
Thanks for trying to help Chronus. My PSU is an Antec True Power TP-650.
It says on the box that its an ATX12v V2.3.
I was also wondering about the Motherboard only getting half the power with the four pin and I wasn't sure if EPS12V was also compatible & meant to be used.
The Motherboard manual is not really very clear. Although it does say "Don't forget to plug in your 4pin/8pin EATX cable, so maybe they have made allowances for this. I also wonder if Antec would state ATX 12v on the box if it was only offering half the power. Maybe the EATX standard means it can also use EPS12v? I need to be certain.
Which is pretty much what I said. But glad you got it sorted as your board would have been under powered if you had just installed the 4 pin plug as suggested. Some boards will run quite happily with only the 4 pin even though there is an 8 pin socket but these usually come with a cap covering 4 of the pins.
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