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I have the Seasonic S12-600 in my current PC, which I'm thinking of upgrading from its ageing s939 Athlon CPU to a Core i5-based system.

My question is whether or not my PSU is compatible with modern motherboards? For example, this P55 Gigabyte board has:

  1. 1 x 24-pin ATX main power connector
  2. 1 x 8-pin ATX 12V power connector

The datasheet for the S12-600 suggests it has the 24-pin ATX main power connector, but it has a 4-pin ATX 12V power connector and an 8-pin EPS 12V power connector.

Will I be able to use my existing PSU to power this board, or am I going to have to replace it?

I've seen discussion (e.g. on Tom's hardware) that an EPS 12V cable can be used with an ATX 12V power connector, is that right?

Many thanks for any and all help!

UPDATE: Reading around more, I've come to the conclusion that the connector is pin and voltage compatible with the socket on the board. I was confused by the 8-pin connector being called an EPS 12V. I took that to mean it wasn't compatible with ATX, as opposed to what it actually means (which is that its inclusion is in accordance with the EPS standard).

A nice summary of the PSU/motherboard compatibility can be found here.

I'm going to accept Wil's answer, since it provides the same conclusion that I've come to independently.

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up vote 1 down vote accepted

From that specification sheet, it should be compatible with any modern computer on the market.

It has many outputs and then some... Seems fine by me.

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"should be compatible" and "seems fine" may still result in trashing a new mainboard with an incompatible PSU. saving on the PSU is always saving at the wrong end. –  Molly7244 Jan 4 '10 at 21:43
    
@Molly - Did you read the PDF? The PSU is a modern one with many modern outputs - It "shold be compatible" and to me, it "seems fine"... I wrote exactly what I wanted to... Do you try to stalk me and everything I write? –  William Hilsum Jan 4 '10 at 22:46
    
@wil: you have a stalker? i'm so jealous! –  quack quixote Jan 4 '10 at 23:14
    
@~quack don't be!... It just feels recently like pretty much every other answer I write gets criticised for seemingly no reason! –  William Hilsum Jan 5 '10 at 0:03
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