New iMacs - 2 or 3 memory modules?

Stingray454

macrumors 6502a
Original poster
Sep 22, 2009
588
104
While browsing around I've stumbled over a few references to things like "tri-channel memory" and such. From what I understand (not that good with these things) some computer architectures / CPUs are optimized for using 3 memory modules, and some for using pairs (2 or 4).

I just read some benchmark tests of the i7 with different memory configurations, and the 12Gb was is most cases on par or better than all the others when it came to performance, even better than the 16Gb one. Is the new iMac (i7) best suited to use 3 memory modules?
 

fruitpunch.ben

macrumors 6502a
Sep 16, 2008
587
156
Surrey, BC
While browsing around I've stumbled over a few references to things like "tri-channel memory" and such. From what I understand (not that good with these things) some computer architectures / CPUs are optimized for using 3 memory modules, and some for using pairs (2 or 4).

I just read some benchmark tests of the i7 with different memory configurations, and the 12Gb was is most cases on par or better than all the others when it came to performance, even better than the 16Gb one. Is the new iMac (i7) best suited to use 3 memory modules?
no. it is dual channel.
 

gibsonjv

macrumors newbie
Nov 10, 2009
19
0
Ohio
While browsing around I've stumbled over a few references to things like "tri-channel memory" and such. From what I understand (not that good with these things) some computer architectures / CPUs are optimized for using 3 memory modules, and some for using pairs (2 or 4).

I just read some benchmark tests of the i7 with different memory configurations, and the 12Gb was is most cases on par or better than all the others when it came to performance, even better than the 16Gb one. Is the new iMac (i7) best suited to use 3 memory modules?
Memory should be upgraded in pairs for the iMac Core i5s and i7s. This is one of the major differences between the Bloomfield (Mac Pros) and the Lynnfield (iMacs) platforms. This article from xbit goes into the nitty-gritty differences of the memory controller between the two platforms.
 

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