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Mac User Group Singapore > Hardware > Mac Pro & Power Mac > Mac Pro RAM - Quadcore early 2009
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Author Topic: Mac Pro RAM - Quadcore early 2009  (Read 286 times)
xpander
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« on: 06 Apr 10, 1036H »
Hi.
I have 4 x slots of DIMM for PC1066 RAM and currently have 3 x 2GB = 6GB RAM on my single quadcore 2.66GHz Mac Pro (early 2009).
Can you mix the RAM size around? For example 2 x 4GB + 2 x 2GB = 12GB RAM. On paper, Mac only support max of 4 x 2GB RAM.

Any insights?

Thanks.
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HH
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« Reply #1 on: 12 Apr 10, 0924H »
It seems that you can add up to 16GB RAM on a Nehalem quad-core:

http://forums.macrumors.com/showpost.php?p=7359152&postcount=45

so I don't see why your configuration would not work.
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george
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« Reply #2 on: 31 Jul 10, 1242H »
Quote from: xpander on 06 Apr 10, 1036H
Hi.
I have 4 x slots of DIMM for PC1066 RAM and currently have 3 x 2GB = 6GB RAM on my single quadcore 2.66GHz Mac Pro (early 2009).
Can you mix the RAM size around? For example 2 x 4GB + 2 x 2GB = 12GB RAM. On paper, Mac only support max of 4 x 2GB RAM.

Any insights?

Thanks.


Yes you can mix that way. No issues at all.
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