Does anyone know the difference between these 2 Crucial 32gb kits? Trying to decide for my 2019!
CT2K16G4SFD8266
CT2K16G4S266M
I installed 32GB (2x16GB) of Timetec Hynix RAM 2667Ghz in my iMac 2019 i9 9900K (from Amazon) and it works very well.
Now, I have in total 40GB of RAM and the system is very stable, silent and with an excellent performance.
Does anyone know the difference between these 2 Crucial 32gb kits? Trying to decide for my 2019!
CT2K16G4SFD8266
CT2K16G4S266M
And they are dirt cheap at the moment!CT2K16G4SFD8266 here
I just ordered and installed the 32GB kit from B&H - currently $134. Free shipping and no tax to my state. I paid more than this for the 2x16GB sticks direct from Crucial but now have 64GB.
https://www.bhphotovideo.com/c/product/1333839-REG/crucial_ct2k16g4sfd8266_32gb_kit_16gbx2_ddr4.html
I have noticed looking at activity monitor that for what I do - topping off the RAM is better/needed.
Used the same. Now I just need to find ways to consume it all
Those are exactly the modules I installed in my machine (4 of them) - they work just perfectly.Hi guys, waiting for my i9 iMac to arrive soon, was thinking to go for a 64GB of total RAM, but I found these Samsung sticks which are very similar that OWC used, but costs a almost 2 times less, have anyone tried them?
https://www.scan.co.uk/products/32g...MItLzuyLnz4QIVy7ftCh1WFw6DEAQYASABEgJW1fD_BwE
Thanks for your quick reply here!Those are exactly the modules I installed in my machine (4 of them) - they work just perfectly.
Also, I never had a problem with Samsung memory modules. But you do find quite a number of faulty OWC modules here in the forums. I honestly think most of the OWC stuff is highly overrated (they offer a great range of products, but - let's face it - they are most likely just branding third party stuff; and if you look at reviews, many of their so slightly modified things just happen to have a lot of issues). I wish they would just make honest marketing and sell stuff that works painfree.
Thanks!I cannot help on that part, but I remember a thread with some issues regarding mixing single and double sided.
But chances are the 8 GB are not that much of an improvement over the 64 GB for most users, compared to adding just 2x8 GB or so. So if it makes problems, throw them out.
RAM is luckily pretty affordable at the moment. The cool thing I can do with 128 GB is to create a 32 GB RAMDisk, clone a fresh OS X virtual machine onto it, run it from there with 32 GB RAM and a couple of cores, mess around with it, and dispose it without tripping the SSD or worrying about anything else running. I just start to enjoy not needing to install some legacy (or crappy) tools on the production machine directly.
Crucials are even cheaperHi guys, waiting for my i9 iMac to arrive soon, was thinking to go for a 64GB of total RAM, but I found these Samsung sticks which are very similar that OWC used, but costs a almost 2 times less, have anyone tried them?
https://www.scan.co.uk/products/32g...MItLzuyLnz4QIVy7ftCh1WFw6DEAQYASABEgJW1fD_BwE
I cannot help on that part, but I remember a thread with some issues regarding mixing single and double sided.
...
...
The cool thing I can do with 128 GB is to create a 32 GB RAMDisk, clone a fresh OS X virtual machine onto it, run it from there with 32 GB RAM and a couple of cores, mess around with it, and dispose it without tripping the SSD or worrying about anything else running. I just start to enjoy not needing to install some legacy (or crappy) tools on the production machine directly.
Crucials are even cheaper
Crucial CT2K16G4SFD8266 32 GB Kit (16 GB x2) (DDR4, 2666 MT/s, PC4-21300, Dual Rank x8, SODIMM, 260-Pin) Memory https://www.amazon.co.uk/dp/B071H38422/
Mine came with Micron chips, same brand as apple stick modules.
Oh well. I must have been fixated on his statement "was thinking to go for a 64GB of total RAM" and did not pay attention to the stick size.@Yurii Suhov is looking for 32GB sticks, not 16GB. Crucial does not seem to have any 32GB available ATM.
At the moment I'm using the command line.Just curious, how do you create your RAMDisk; terminal commands (I know how do to that) or some util? If the latter, does it have write-back functionality? I'm always in search of a good RAMDisk util but cannot find a current one that does this.
At the moment I'm using the command line.
diskutil erasevolume HFS+ "RAMDisk" `hdiutil attach -nomount ram://16384000`
(example for about 8 GB I think).
I had some tool installed in the past that would also mount the volumes for Xcode or Safari cache right onto it. But the speed gain is marginal there, and it comes with a couple of downsides.
So for real world code development, it doesn't pay off any more (at least compared with the super fast installed SSD).
Same holds true for a Mojave installation in a virtual machine. Takes 19 seconds to boot up from SSD, and exactly the same time from RamDisk (after a boot, so there should have been no caching).
Maybe APFS helps the SSD here, and I "only" used HFS+ for the RAM disk. I might try APFS on the RAM disk as well, just for fun.
Exactly. While it's probably an overrated issue for usual daily tasks, I think it may actually be worthwhile for a couple of things. The virtual machine example to test things is such a case for me; cloning to the RAMDisk of around 15 GB takes less than 10 seconds, and it gets disposed properly afterwards - so it cannot be forgotten on disk.Other advantage of RAMDisk is reduced wear on SSD.
No real other downsides I guess. For development, when you put the dev. folders on there, it basically does a clean build for every dependency on the first run, which may or not be what one wants. It just didn't bring any real advantage, so I stopped using it (persistence may solve some problems, but also look out for the size - when the disk is full it might behave unexpected). Non-persistent caching is also at least somewhat defeating the purpose of the cache, but that's all not new to you.So yours are not persistent nor have write-back. Other than these, what other downsides have you encountered?