PSU in Mac Pro 2008

[TheWaveable]

Hi!

I bought a 2008 motherboard and 2x new CPUs for my 2006/2007 Mac Pro. But when I press the power button the only thing happening is a *click*. Do I need a bigger PSU or is there another problem?

Any thoughts?

 

[linuxcooldude]

You are going to need to provide detailed description of the type of processors & Mac Pro before anyone can help you.

 

[TheWaveable]

You are going to need to provide detailed description of the type of processors & Mac Pro before anyone can help you.

The CPUs are 2 Intel Xeon E5472 SLBBH 3.00GHz 12M 1600MHz Quad Core
The PSU is the PSU that came with the machine (2006)
Motherboard is 2008 Mac Pro

 

[MacUser2525]

You don't give much to go on here but I am thinking that you have taken the logic board from a 2008 machine and put it into a 2006 case this will not work. You need both boards in the machine to be from the same series a 2008 backplane board and 2008 logic board go together. Both boards have firmware that must match for it to be able to boot.

 

[666sheep]

You don't give much to go on here but I am thinking that you have taken the logic board from a 2008 machine and put it into a 2006 case this will not work. You need both boards in the machine to be from the same series a 2008 backplane board and 2008 logic board go together. Both boards have firmware that must match for it to be able to boot.

No. Backplane + CPU tray started from 4,1. Previous models have single logic board.

OP, you need 2008 PSU too. Even if 1,1/2,1 PSU looks that same as 3,1 one, their specs are slightly different.

 

[TheWaveable]

No. Backplane + CPU tray started from 4,1. Previous models have single logic board.

OP, you need 2008 PSU too. Even if 1,1/2,1 PSU looks that same as 3,1 one, their specs are slightly different.

Ok, thanks!