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3GB or 2GB dual-channel?

Eidorian said:
Yeah, I know that you need identical sticks for dual channel. CPU-Z seems to keep reporting my 1.5 GB of RAM as being in Dual and not single. I do the same thing on my other PC's here and it reverts to single channel.
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That depends on the chipset and i know for a fact that AMD overcame that limitation ages ago and i'd say intel did too.

EDIT: Straight from the horses mouth! Dual channel is enabled with intels flex memory technology!

Intel Flex Memory Technology said:
Facilitates easier upgrades by allowing different memory sizes to be populated and remain in dual-channel mode.
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TBi said:
You don't need identical sticks, just two. Then again that could be only with AMD processors.
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TBi said:
That depends on the chipset and i know for a fact that AMD overcame that limitation ages ago and i'd say intel did too.

EDIT: Well it seems intel didn't actually fix that.
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Two posts quoting me? :D

It's on Intel systems. I don't have any AMD ones. They're different sizes as well. CPU-Z still says Dual Channel mode.
 
Eidorian said:
Two posts quoting me? :D

It's on Intel systems. I don't have any AMD ones. They're different sizes as well. CPU-Z still says Dual Channel mode.
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You should feel honoured. Anyway according to intel themselves the macbook pro comes with a flex memory enabled controller and flex memory enables dual channel mode with different size memory sticks!
 
daneoni said:
Have any facts to back that up? cos so far what you're saying is just another word of mouth so why should i take your word over the other?
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What is it with people that they continue to deny facts just because they don't know something? Questions are asked, then they are answered. If you don't trust answers, then......geez, I don't know what....sit at home not knowing for sure.

Fact: Apple recommends paired ram in the Mini/MB/Edu iMac, but not in the iMac/MBP.

As discussed further in this thread, the Mac Pro requires paired ram for its Dual-channel setup. None of the other Intel Macs need this. However, they can have limited improvements with paired ram for memory interleaving. But it only matters in real-world measurements on the models with integrated graphics. So, MP: pair the ram; MBP/iMac: who cares; MB/Mini/Edu: pair it if you are anal.

If you don't believe this, fine. I give up. Buy one of each model of the computers and the ram and do extensive testing yourself.
 
TBi said:
You should feel honoured. Anyway according to intel themselves the macbook pro comes with a flex memory enabled controller and flex memory enables dual channel mode with different size memory sticks!
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I guess my iMac should fall under that with the same 945 chip set right?
 
TBi said:
You should feel honoured. Anyway according to intel themselves the macbook pro comes with a flex memory enabled controller and flex memory enables dual channel mode with different size memory sticks!
Click to expand...

Finally, a straight answer! :D
 
i would think 3GB would outperform any additional benefits from a 'dual channel' setup with 2GB.
 
3 gigs > 2 gigs matched pairs. But if you aren't really going to use more then 2 gigs and if you don't have the money for a 2 gig dimm..then I don't think its worth it.
 
adiosk8 said:
3 gigs > 2 gigs matched pairs. But if you aren't really going to use more then 2 gigs and if you don't have the money for a 2 gig dimm..then I don't think its worth it.
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As said (by intel themselves), you get dual channel with any two sticks of ram so why worry?
 
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