I'm getting a pile of macbooks soon. I need to know this: if I can do dual channel 4 gb ram would that be better than 6 gb of ram? I don't know what the dofferences would be or if it will even matter in the end.
No it won't make a difference
You are not likely to notice a difference in having both RAM channels active, but you are likely to notice a difference when having more RAM. I put 16GB of RAM in my shit-top laptop and it made a world of difference, especially since it only had 4GB originally. Later I added an SSD as a boot drive and now I don't want to put it down. ;)
[edit] So to sum it up. I would favor more RAM over faster RAM.
The theoretical best to worst would be
fast dual channel
fast single channel
slow dual channel
slow single channel
however, as long as you A) have enough ram - and B) arent doing things that need super speedy memory access then you should be fine
also if you go with 6 or 8 gb in a single stick, you have room to upgrade later if required.
Well the mac J might end up with will have a t2500 Core Duo so 6 is as far as I can get but I will only be able to do 4 as it turns out x3. 4 gb ddr2 is rare as hell
grab it before its gone
Haha I don't think I'll need it x3 thank ypu though!! I'm sure I can work something out in the event that I do want it. If I want 6 gogs it will be for minecraft or something. 4 will do, even 2.