I forgot to add you to the replies above. Really appreciate the link to that thread. I hadn't read it before, and it was very helpful.I like option 3 but @Boyd01's numbers only show something like PCIe 3.0 x1 (or PCIe 2.0 x2 or PCIe 1.0 x4) performance. What is the max PCIe link rate and link width allowed by the connector in the Mac mini 2014? There's an upgrade guide at https://forums.macrumors.com/threads/using-a-standard-m-2-pcie-nvme-ssd-in-the-2014-mini.2118732/ which shows PCIe 2.0 x2.
Ok, so 800 MB/s max via internal PCIe 2.0 x2 NVMe or AHCI. That's not a lot more than internal SATA 6G (550 MB/s). It's much better than USB 3.0 (460 MB/s).
If you connect a Thunderbolt 3 device, then you can get USB 3.1 gen 2 (1000 MB/s) or Thunderbolt 2 (1800 MB/s).
The faster you want to go, the more expensive it gets. I think you would be perfectly happy with a SATA 6G SSD.
If your Mac mini didn't come with a blade, and you want to add one, then the Sintech adapter you linked is the way to go (the pictures show it comes with a screw). Optionally, OWC sells a kit that includes the missing cable (but uses Apple's special connector for the blade) - and if you have that cable then Sintech has an adapter to convert from Apple's blade connector to M.2 connector (linked in that MacRumor's upgrade guide).
I didn't know this. So thanks--I may end up going this way then.#3
use the nvme adapter and a WD blue SN550 for best price/performance ratio. This way you get to keep the spinner HDD as a secondary storage too.
Mac mini 2014 is only PCIE x2 so you will only get PCIE x2 speed even if you use a PCIE x4 gen 3 or gen 4 SSD.
I think I'll be going down this road now too--except will probably stay with Big Sur. Keeping fingers crossed.I also use this solution on my Mac Mini Late 2104 with 8gb ram and I5 2,6ghz dualcore
I use the same nvme WD Blue SN550 512gb SSD with an adapter.
I have also downgraded to Mojave So that the Mac Mini works better, because this processor is not from last generations.
Now it looks like another computer.
In this forum they already told me that this is the best solution for this computer
Thanks for that, I'm hoping for the same.I did a very similar thing to my late 2014 4gb Mac mini and the nvme revived it completely
very quick and easy install, too
do recommend
So I am learning... I appreciate your weighing in.The PCIe blade-style SSDs are a piece of cake to install compared to swapping out the SATA HDD for an SSD. As others have pointed out, buy the PCIe connector kit from iFixit or elsewhere and go from there. The OEM PCIe SSDs are available from ebay in various storage capacities, with larger capacities generally being somewhat faster.
I saw that kit. Tempting, but have already ordered the adapter elsewhere. I'm hoping I'll be alright, but thank you for pointing it out.I went with your Option #3. Bought everything needed in this upgrade kit here:
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OWC Aura Pro X2 1.0TB SSD for Mac mini (Late 2014)
Upgrade kit includes all needed tools and components to safely upgrade your 2014 Mac mini to a blade-style SSD. Up to twice as fast as the original SSDs.eshop.macsales.com
Only took a few minutes. Made things much better.
The Loaf, I just had to reply as I am going through the same thought processes as you. Thanks so much for creating such a vibrant thread, and to all contributors for providing a rich variety of ideas.I think I'll be going down this road now too--except will probably stay with Big Sur. Keeping fingers crossed.
Thanks for that, I'm hoping for the same.
So I am learning... I appreciate your weighing in.
I saw that kit. Tempting, but have already ordered the adapter elsewhere. I'm hoping I'll be alright, but thank you for pointing it out.
click on the view, change to all device and erase the wd blue from the root.Quick question—if anybody is still reading this. I bought and installed the Sintech adapter and WD Blue 1TB SSD and installed them in the Mini (more on that later). I fired it up and got a msg. that the new hd was unreadable. So I initialized it with disc utility in APFS. Waited and then got this message. Is this normal? I went ahead and restarted and it “seems” to be a regular hard drive. I copied a couple files onto it, back and forth, just to test it, and it seems fine, but don’t really know. Currently, I’m using CCC to clone my hard drive onto it. I mean, what’s the worst that can happen? But don’t know if I should have addressed the failure message.
View attachment 1748605
I would prefer internal over external too whenever i can. Probably its due to the old USB giving flaky connections that disconnect sometimes just randomly. I wouldn't want to be booting externally and then just disconnections.Those are the kinds of speeds I would expect from an internal SSD. But I really don't understand what the issue was with your T7. I have two 2TB T7's and they have write speeds around 850MB/sec on my 2018 Mini. Never tried them on my 2014 Mini, but I get about 400MB/sec write speeds on it using an older Samsung T3 and an Oyen Digital USB SSD.
click on the view, change to all device and erase the wd blue from the root.
use cmd r, recovery mode to erase if needed. Not sure if SATA disk clone to NVME works, you might be better off with a fresh install of macos.
Cool. I did the same (see wrap up post) but with the WD Blue version. Thanks for the link--CCC kind of takes you through the same thing when cloning. Good luck!The Loaf, I am hoping you are up and running super fast now. Anyway I installed my Sintech adapter and my Crucial P2 CT1000P2SSD8 1TB Internal SSD. I found this web page https://uk.crucial.com/support/articles-faq-ssd/initialize-ssd-el-capitan-and-later which I think could be be used for any similar PCIe blade SSD. Found it straightforward. Then used CCC to copy my external Samsung T7 SSD across. Used the option key at start up to select the Crucial drive.
My write speed is about 15 times faster than with the T7! Write speed 731MB/s, Read speed 746MB/s.
Root meaning you click on the hardware SSD itself instead of the APFS container below it. But its fine since you are cloning and the clone task will make your ssd the same as the hdd.Not sure I understand (again, sorry but I'm pretty much a newbie to this). I clicked on the view and all device, but don't understand what it means to erase "from the root." BUT, at this point, everything seems to be working alright, and I would only go through that process if things get wonky for me, so it's not critical. (see the other post I'll be writing shortly) However, I want to say I've appreciated your help through this process.
That's fine just 1 screw is needed and you won't use the other parts unless you are using the 2242 shorter SSD.I didn't use the washer, 2nd screw, or spacer (not sure what to call it) that were included. Maybe I should have, but it seemed pretty stable. (If I made a major mistake, please let me know, thx.)
There will always be 2 camps of people here:Booted my 2012 quad Mini with an external 1TB Samsung T3 for several years and used it heavily with Final Cut Pro, Logic Pro and other demanding software. Never once had a problem. But maybe I was just lucky?
Of course, the internal SSD on the 2012 Mini is slower than the 2014 (only about 500MB/sec) so there isn't as much difference between internal/external on that model.
I just want to point out that OWC uses Apple's proprietary keying on the NVMe SSD blade. As far as I know, only Apple and OWC use this proprietary keying. That's one of the reasons the OWC kit is more expensive than others.I went with your Option #3. Bought everything needed in this upgrade kit here:
![]()
OWC Aura Pro X2 1.0TB SSD for Mac mini (Late 2014)
Upgrade kit includes all needed tools and components to safely upgrade your 2014 Mac mini to a blade-style SSD. Up to twice as fast as the original SSDs.eshop.macsales.com
Only took a few minutes. Made things much better.
Those are the kinds of speeds I would expect from an internal SSD. But I really don't understand what the issue was with your T7. I have two 2TB T7's and they have write speeds around 850MB/sec on my 2018 Mini. Never tried them on my 2014 Mini, but I get about 400MB/sec write speeds on it using an older Samsung T3 and an Oyen Digital USB SSD.
Sorry guys and thanks for responding. I took my eye off the ball and missed your replies here. The slow write speed with the T7 is reported in a few places, for example in this thread: https://forums.macrumors.com/threads/slow-external-ssd-write-speeds-in-catalina.2239518/ where as low as 16MB/s is reported. It is associated with having to use the USB A/ 3.0 connection to the Late 2014 Mini. If only I could find a way to plug to the Mini Thunderbolt 2 port it might help, but there doesn't appear to be an economic way of doing that. A few people have reported how hot the T7 can get, and I had the same experience when doing the original CCC transfer, after which the write speed had plummeted. Strangely the performance overall of the Mini was still pretty good so I persisted with it for a while.I would prefer internal over external too whenever i can. Probably its due to the old USB giving flaky connections that disconnect sometimes just randomly. I wouldn't want to be booting externally and then just disconnections.