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Old January 23, 2011, 08:51 PM
Join Date: Jan 2011
Posts: 2
Default 24 pin power connector

this is my second build the first one was in 96 my problem is with the 24 pin connector on the motherboard, it post with 20 pin + the 4 pin for the cpu but it with the 24 pin thers no post no fans it's all dead even if i add the cpu 4 pin. I'm at a lose on how to get the 24 pin to work.

build info
motherboard asus m4a78t-e
power supply cm gx 750w
amd x4 965
cpu cooler hyper 212 plus
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Old January 24, 2011, 07:58 AM
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Posts: 1,631

are you sure you're inserting all the connectors with the correct orientation?
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Old January 24, 2011, 10:28 AM
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Join Date: Apr 2010
Posts: 211

Make sure you flick your power supply on (there's a switch at the back).

Also, try the PSU in your previous desktop so we can rule out whether or not it's a dud.
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Old January 24, 2011, 12:14 PM
Join Date: Jan 2011
Posts: 2

i'm getting 12v on the 2 yellow wires on the p3 connector for the cpu for a total 24v and on the P1 mo connecter the last 4 has 12v yeallow 3.3v orange 5v purple for a total of 20.3v, dont i need 3.7v on it to make the 24v for the cpu.
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Old January 24, 2011, 02:02 PM
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Join Date: Nov 2008
Location: Ottawa, ON
Posts: 1,352

My System Specs


??? those voltages don't sum.

The extra 4 pin for a motherboard give you another +5, +3.3, +12V, and GND to allow you to have more CURRENT, not voltage going to the motherboard. The CPU is the same thing, where +12V are placed in PARALLEL so you have have more current going to the CPU, but still at +12V (to allow the motherboard's VRMs to send the ~1.2-1.3V or whatever the CPU actually wants).
"The computer programmer says they should drive the car around the block and see if the tire fixes itself." [src]
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Old January 26, 2011, 10:35 AM
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Where's the RAM???
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