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2009 4,1 CPU upgrade question

fabriciom

macrumors 6502
Original poster
Feb 17, 2008
391
99
Madrid, España
Hello,

Im looking to upgrade the CPUs on my 2009 mac pro again. Do they have to be a matched pair?

I did this long time ago and I don't remember if I bought matched paired.

-Thanks
 

h9826790

macrumors G5
Apr 3, 2014
14,938
7,317
Hong Kong
AFAIK, all you need is the same model and same step. Different model sure won't work, different step on some CPU won't work.

Since you already updated once, I assume you know you need de-lidded CPU, or use the count turn / washer method.
 
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fabriciom

macrumors 6502
Original poster
Feb 17, 2008
391
99
Madrid, España
Im looking to upgrade to the X5690. Do they have to be the same step?

I used the 2mm washer trick on my current cpus.
 
Last edited:
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scott.n

macrumors 6502
Dec 17, 2010
337
78
Yes, they need to have the same stepping - but all X5690 have the same stepping. Any pair should work.
 
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