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Anyone have experience with installing 5GB of RAM in Late 2008 Pro?

V

vader1990

macrumors regular
Original poster
Sep 23, 2008
220
2
I was wondering if any of you have installed a 4GB and 1GB--the one it ships with--(Total 5GB) module in the late 2008 Pro yet? How well does it work? Does it improve speed at all? Is it worth the upgrade? Details/links/articles/videos/pics, are all greatly appreciated :)

I heard it tales away dual-channel or something? Is this true? How much of a loss is this really?


Thanks!
 
Dual channel only happens when you have 2 matched sticks. ie, 2 identical chips in your 2 slots. Hence, this wouldn't get dual channel. However, generally, for RAM, more>matched. Meaning that say, 3GB unmatched will still perform better than 2GB in a matched pair.
 
raymondu999 said:
Dual channel only happens when you have 2 matched sticks. ie, 2 identical chips in your 2 slots. Hence, this wouldn't get dual channel. However, generally, for RAM, more>matched. Meaning that say, 3GB unmatched will still perform better than 2GB in a matched pair.
Click to expand...

In theory, no; dual channeling does not necessary requires two identical ram.
http://en.wikipedia.org/wiki/Dual-channel

Has anyone tried replacing the original 1 + 1 = 2 Gig ram to 1 + 4 = 5 Gig ram?
 
But they must be same size. And not the same brand, but same spec. I have 6GB (2+4) if that helps any.
 
Well I don't really feel it being "faster." But I can feel it a bit "tougher," if you know what I mean. It's not any faster, but it can take whatever I throw at it. So like, I can open more apps at the same time. So the answer would be the second one.
 
CaffeMacchiato said:
It seems that no one has done 1 + 4 before.
Click to expand...

Just a guess, but perhaps most people rich enough to buy a 4Gb stick of ram probably already had or are also willing to buy a 2Gb stick to go with it for 6Gb. If you're going to be hard core enough to try it at all, surely it makes sense to go for the most "top drawer" setup you can get right?
 
bartzilla said:
Just a guess, but perhaps most people rich enough to buy a 4Gb stick of ram probably already had or are also willing to buy a 2Gb stick to go with it for 6Gb. If you're going to be hard core enough to try it at all, surely it makes sense to go for the most "top drawer" setup you can get right?
Click to expand...

Lol, so 4 + 4 is the max?
 
There have been many reports of 8GB tested. However, in all of these cases, the MBP simply slows to a crawl, leading us to believe that the MBPs have been tinkered with at the software level to disallow this.
 
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