On 2010/10/28 10:32, Jonathan so eloquently wrote:
I am pondering an upgrade of my mid 2010 27" i5. It has the standard
4gb (2X2) ddr3 1333 sodimm.

I need to be certain of whether I am restricted by dual channelling.
Do I need to buy in pairs? Or can I leave my 2X2gb and add a single
4gb stick?

On this subject is it safe to say that any multi-core and/or multi-processor Mac needs RAM to be installed in sets? Or is there some other variable that determines this need?

Tina

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iMac 20" USB 2, 1.25 GHz G4, 2 GB RAM, GeForce FX 5200 Ultra 64 MB DDR, Kubuntu 10.10

Power Mac June 04, 2 GHz G5 DP, 8 GB RAM, GeForce 6800 Ultra DDL 256 MB, Leopard 10.5.8

PowerBook G4 15" Hi-Res DL-SD, 1.67 GHz G4, Radeon 9700 128 MB DDR, Leopard 10.5.8

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