Member Since: Mar 03, 2008
Location: Annapolis, MD
Mac Specs: Macbook, 2.2 GHz, 4GB RAM
06-16-2008, 10:54 AM
Originally Posted by Soulwar
I'm assuming you have the 2.16 GHz 24" iMac?
Some info about the ram.
"The iMac "Core 2 Duo" 2.0 17-Inch, 2.16 20-Inch, and 2.16 24-Inch
-- the "iMac (Late 2006)" models -- shipped with "at least 512 MB DDR2 SDRAM installed into the top slot". There is not a performance penalty for populating a single slot or populating both slots with different capacity modules.
However, rather unusually, Apple notes that:
Although these iMacs will accept up to a 2 GB SO-DIMM in each of the two memory slots, the iMac will only support 3 GB total memory.
If you want to maximize the amount of SDRAM in your computer, install a 2 GB SO-DIMM in one slot and a 1 GB SO-DIMM in the other. . .
If you do install a 2 GB SO-DIMM in both the bottom and top memory slots of the computer, the About This Mac window and Apple System Profiler will both show that you have 4 GB of SDRAM installed. However, Activity Monitor and other similar applications will reveal that only 3 GB of SDRAM has been addressed for use by the computer."
OWC also has a "memory trade in rebate".
Soulwar, good post...
I suspect the differences between 3 and 4 GB are the same that bother 32bit PCs. That extra GB that you don't see is mostly used for memory addressing, but there is some of that top GB which can be used by the programs.
I think I'd buy whatever makes the best economic sense. I think I agree with Dartholomew. Buy 2x2GB for $62 if still available if it's cheaper than 1GB plus 2GB. You may in reality get 3+ GB use, maybe 3.2, 3.3...
Last edited by Noels; 06-16-2008 at 11:09 AM.