RAM Upgrade Question

Joined
Feb 13, 2007
Messages
254
Reaction score
8
Points
18
Location
Worthing, West Sussex, UK
Your Mac's Specs
27" Retina 5K iMac 3.2Ghz Quad 24GB RAM, 1TB HD. iPhone 11.
I've just bought a new iMac which came with 4GB of RAM but I want to upgrade it to at least 8GB and ideally 16GB (apparently the maximum it supports even though there are 4 slots each of which support 8GB DIMMS).

I wondering if there is any performance difference in using just 2 memory banks or all 4?

If I upgrade to 8GB should I buy 2 more 2GB DIMMS or replace the existing RAM and replace with 2x 4GB DIMMS?

If I upgrade to 16GB should I use 2x 8GB or 4x 4GB DIMMS?

Or does it not matter?
 
Joined
Apr 20, 2010
Messages
472
Reaction score
15
Points
18
Your Mac's Specs
21.5 iMac 3.06 ghz 12gb ram 500g HD iPad 2 16G
Matching pairs top and bottom...any combination...just matching.
 
OP
P
Joined
Feb 13, 2007
Messages
254
Reaction score
8
Points
18
Location
Worthing, West Sussex, UK
Your Mac's Specs
27" Retina 5K iMac 3.2Ghz Quad 24GB RAM, 1TB HD. iPhone 11.
Matching pairs top and bottom...any combination...just matching.

Cheers Codda. Have ordered now 4x4GB as this was massively cheaper than 2x 8GB
 

Shop Amazon


Shop for your Apple, Mac, iPhone and other computer products on Amazon.
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
Top