upgrading RAM

MacKnut

macrumors newbie
Original poster
Jan 15, 2020
9
1
About to get a new iMac 27'' 3,7/8/1TB SSD/580X. When upgrading RAM with two 16 GB modules, will I need to remove the existing two 4GB modules to avoid bottle neck problems when running memory-hungry graphic programs?
 

marzfreerider

macrumors regular
Jun 13, 2014
172
99
Canada
As long as the specs are the same you ordered, you should be fine. Just put the new sticks in the empty slots and have 40 GB of RAM.
 

warp9

macrumors regular
Jun 8, 2017
220
260
Pardon the thread hijack. I just ordered a refurb 27" with 16GB ram. Would this be in the form of 4x4GB, 2x8GB, or 1x16GB?
 

DerKommissar

macrumors member
Dec 1, 2007
58
13
Pardon the thread hijack. I just ordered a refurb 27" with 16GB ram. Would this be in the form of 4x4GB, 2x8GB, or 1x16GB?
I think it would be likely to be 4x4gb, given that the 8gb config is 2x4gb. 1x16 go is right out.
 

warp9

macrumors regular
Jun 8, 2017
220
260
Ok thanks. I've picked up a 2x8GB kit so I guess the worst case scenario is 24GB.
 

warp9

macrumors regular
Jun 8, 2017
220
260
The Mac arrived and the memory arrangement is 2x8GB. It's a refurb so I don't know if the ram is OEM or not. It's Micron 8ATF1G64HZ-2G6E3.
 

DeltaMac

macrumors G4
Jul 30, 2003
10,286
2,702
Delaware
If that's an Apple refurb iMac (that you purchased from Apple), you can assume that the RAM is "OEM", and tested.
 
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