12GB of ram in new iMac?

joshmv

macrumors member
Original poster
May 14, 2007
81
0
Hey everybody,

I just ordered a new 21.5 imac (3.06ghz) and it should show up tomorrow :)

I ordered it with 8gb of ram pre-installed. Since it still had two open slots I ordered a 4gb kit from crucial since it was only another $100.

My question is, I started reading that to really get the most out of the ram, they should all be matching. Is it going to matter that I have two 4gig sticks and two 2gig sticks or will it still give me the advantage because both sets are matching, just not in size?

I always have a ton of programs, tabs, etc open so more ram is always a good thing, but if I won't see much of an improvement with the extra 4gigs I ordered from crucial I'd probably just return it.

Thanks for the help!
 

alust2013

macrumors 601
Feb 6, 2010
4,779
1
On the fence
You have to do some pretty heavy stuff to get the full benefit from 12 gigs of RAM, but as far as speed goes, you won't notice the difference that is created by the different size sticks.
 

joshmv

macrumors member
Original poster
May 14, 2007
81
0
You have to do some pretty heavy stuff to get the full benefit from 12 gigs of RAM, but as far as speed goes, you won't notice the difference that is created by the different size sticks.
Ya, I work on mine all day and am admittedly kind of a "hoarder" when it comes to closing tabs or windows.

I usually have Photoshop up with multiple projects, 70-80 tabs open between Chrome, Safari, and Firefox. Itunes, Ichat, Filezilla, TextEdit, Espresso, and 2-3 other small programs. Occasionally I also have Parallels open with Windows running.

My current Core 2 Duo iMac has 4gb and I've noticed some slowdowns. The Activity Monitor usually shows that all of my RAM has been allocated. I'm guessing 8GB would probably take care of everything but wasn't sure.

Thanks for the help.
 

Spike88

macrumors 6502a
Jan 25, 2010
662
0
As a general rule (from my A+ and computer tech days), memory sticks in same computer should be "Same Speed" and "same company". Same Speed is most important.

If different "speed" memory chips are used, the fastest memory stick will "slow down" - to become equal with the slowest speed stick.

Sometimes, slightly slower speed chips are NOT even noticed. re: More available memory makes the system run much faster. But for 100% "efficiency" gain, use same speed chips and same company chips. In reality, its what works best for your system. If my system running your apps, I'd keep and install the extra memory (even if different company name on them).

Hope this helps...
 

vandozza

macrumors 6502a
Jun 14, 2006
612
0
Australia
I ordered it with 8gb of ram pre-installed. Since it still had two open slots I ordered a 4gb kit from crucial since it was only another $100.
I think you'll find that your 8GB system from Apple will consist of 4 x 2GB sticks of RAM (not 2 x 4GB.) So you won't have any "free" RAM slots at all.

Sorry! :(
 

symbology

macrumors regular
Aug 4, 2010
190
0
I think you'll find that your 8GB system from Apple will consist of 4 x 2GB sticks of RAM (not 2 x 4GB.) So you won't have any "free" RAM slots at all.

Sorry! :(
I was thinking the same thing. 4X2GB sticks is cheaper than 2X4Gb sticks. It sucks, but that is usually the way it is.
 

joshmv

macrumors member
Original poster
May 14, 2007
81
0
I think you'll find that your 8GB system from Apple will consist of 4 x 2GB sticks of RAM (not 2 x 4GB.) So you won't have any "free" RAM slots at all.

Sorry! :(

Ya, looks like you're right actually. I misread the configuration page on Apple which means I overpaid quite a bit for the pre-installed ram and now have some that I'll need to return to Crucial.

I hate when I skip due diligence on things :(
 

vandozza

macrumors 6502a
Jun 14, 2006
612
0
Australia
Ya, looks like you're right actually. I misread the configuration page on Apple which means I overpaid quite a bit for the pre-installed ram and now have some that I'll need to return to Crucial.

I hate when I skip due diligence on things :(
I only recognise this error as I almost made the same one a few days ago (ordering a 21.5" i3.)

Sorry to be the bearer of bad news.
 

meat popsicle

macrumors newbie
Nov 24, 2009
12
0
As a general rule (from my A+ and computer tech days), memory sticks in same computer should be "Same Speed" and "same company". Same Speed is most important.

If different "speed" memory chips are used, the fastest memory stick will "slow down" - to become equal with the slowest speed stick.

Sometimes, slightly slower speed chips are NOT even noticed. re: More available memory makes the system run much faster. But for 100% "efficiency" gain, use same speed chips and same company chips. In reality, its what works best for your system. If my system running your apps, I'd keep and install the extra memory (even if different company name on them).

Hope this helps...
I was looking at getting the standard ram in my iMac and buying from OWC 2x4gb sticks. Same speed, compatable ram. Should I expect any issues?
 

aliensporebomb

macrumors 68000
Jun 19, 2005
1,844
223
Minneapolis, MN, USA, Urth
Ah

I was looking at getting the standard ram in my iMac and buying from OWC 2x4gb sticks. Same speed, compatable ram. Should I expect any issues?
Not anything that you would notice.

I was going to do a test today removing the original OEM ram in my iMac and do a geekbench with the 2x4 gb sticks I bought recently and then re-adding
and showing the gb figures afterwards.
 
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