I do see your point about the mixed up information out there.
Thank you for the Kingston paper. At least the case is closed in terms of what the actual correct configuration is now.
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RAM on 2017 iMac 5k
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I do see your point about the mixed up information out there.
Thank you for the Kingston paper. At least the case is closed in terms of what the actual correct configuration is now.
I believe it is possible. I read somewhere that someone successfully installed 64gb with that specific model.
I have ordered a 27 inch 2017 iMac with 8GBs of RAM. I am planning on upgrading the RAM myself and was thinking about getting the Corsair vengeance 32 GB upgrade kit. Would it be fine to leave the 8GB Apple RAM stick in when I add the 2x 16GB sticks from Corsair or should I remove the Apple RAM and just use the Crusial RAM?
In the future I am planning on upgrading to 64GBs but that won’t be soon so having 8GBs extra would be great btu in heard that mixing RAM could create issues.
https://www.webhallen.com/se/produc...2400Mhz-DDR4-CMSX32GX4M2A2400C16?ref=Prisjakt
In the future I am planning on upgrading to 64GBs but that won’t be soon so having 8GBs extra would be great btu in heard that mixing RAM could create issues.
https://www.webhallen.com/se/produc...2400Mhz-DDR4-CMSX32GX4M2A2400C16?ref=Prisjakt
I added mine before turning it on re: my current machine. I’ve done it later on another machine.
Doesn’t matter. Obviously, don’t add ram in the machine is on!
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I mean “while” the machine is on
Well.. may not be a bad idea to test the stock machine works OK first including a memory test, before you upgrade. That’s what I did just to check what I had delivered was 100% fine, just to isolate any fault in case of an error with the extra memory install...
Interesting thread. I'm just about to take delivery of a 5K iMac (with the stock 8 GB). I have 2 x 8 GB sticks coming from Crucial in a couple of days and was planning to replace what's in there with these two as I was concerned about having two pairs of mismatched RAM. From what I can see, though, that's not the case, right? Should I keep the original 2 x 4 GB in there and get 24 GB? It'd be nice as I've hit 16 GB on my work MacBook but if there's any performance hit at all I'd rather not. Thanks!
That’s the 24GB setup I have - I did same as you - and it works fine. The sticks will work in pairs dual channel mode. Just add the two new ones into the two empty slots. The benefits of extra 50% memory I’m sure far outweigh the tiny spec differences between the pairs. SImples.
I was asking myself the same as I wanted to upgrade to 16Gb for now and maybe in the future add more 8Gb.
I bought one stick of 8GB and contacted Apple to check if this wouldn't cause any issues. Here is the answer I got:
To answer your question, memory doesn't have to be installed in pairs, but it is recommended in pretty much any modern motherboard as this is what enables Dual Channel mode which can (under some circumstances) dramatically increase performance.
Generally though, more RAM even in not dual channel will out perform less RAM.
At the moment I'm using 2 X 4GB + 1 x 8GB and so far so good.
I bought one stick of 8GB and contacted Apple to check if this wouldn't cause any issues. Here is the answer I got:
To answer your question, memory doesn't have to be installed in pairs, but it is recommended in pretty much any modern motherboard as this is what enables Dual Channel mode which can (under some circumstances) dramatically increase performance.
Generally though, more RAM even in not dual channel will out perform less RAM.
At the moment I'm using 2 X 4GB + 1 x 8GB and so far so good.
iMac 5k, 2017 - using 24GB DDR4 PC4-2400 (19200)
2x 8GB - Corsair Vengeance DDR4 2400 Mhz
2x 4GB - OEM standard (apple)
just make sure you use the compatible one: https://support.apple.com/en-us/HT201191
off lately ddr4 sodimm ram is cheap, 130$ for 32 GB - i got 16GB for 110$ back then.
and answer to other question, no using 1 16gb stick wont make much diff .. but let say using 2x 8Gb in dual channel mode will slightly boost performance.
2x 8GB - Corsair Vengeance DDR4 2400 Mhz
2x 4GB - OEM standard (apple)
just make sure you use the compatible one: https://support.apple.com/en-us/HT201191
off lately ddr4 sodimm ram is cheap, 130$ for 32 GB - i got 16GB for 110$ back then.
and answer to other question, no using 1 16gb stick wont make much diff .. but let say using 2x 8Gb in dual channel mode will slightly boost performance.
I have that same machine and added 16 gb from OWC for 24 gb total. 4+4+8+8. Zero issues, I suggest using all slots, though.