Does Mac Pro RAM have to be installed in pairs?

[eclipse]

Hi all,
what happens if you install 1 extra instead of 2 extra?

 

[mdgm]

I think it depends what model you have. On newer Mac Pros, 3 memory slots filled per CPU is ideal.

 

[eclipse]

My wife's machine is a 2008 Mac Pro 8 Core that currently has DDR2 FB-DIMM 800MHz ram.

 

[beto2k7]

My wife's machine is a 2008 Mac Pro 8 Core that currently has DDR2 FB-DIMM 800MHz ram.

In that case yes. Pairs is the ideal.

 

[toxic]

Hi all,
what happens if you install 1 extra instead of 2 extra?

you get one more stick of RAM instead of 2.

 

[beto2k7]

.

 

[Terminal.app]

.

tl;dr