💨 High-Speed 2TB OWC Accelsior 1M2: PCIe 4.0 NVMe M.2 SSD Card - Lightning-Fast Storage Solution Review

I bought two cards here plus Samsung 980 NVMe 1TB cards locally to use as boot drives and privileges on two Mac Pro 5.1 cases. Read and write speeds exceed 1300MB/s. This card knocks my 2.5" SATA 6G SSDs out of the water... it's really freaking FAST. Mojave 10.14 .6 is really moving... and Big Sur 11.2.3 too if you have Opencore 0.6.8 installed to 5.1 (or flashed 4.1 to 5.1) (don't upgrade to Big Sur 11.3 because Big Sur 11.3 is it is not currently officially or unofficially compatible with…

It worked great to update my 5.1 Mac Pro without driver. I was able to install a new operating system on this new drive even though macOS sees it as an external volume. However, the performance was as advertised. I will buy this again for my windows flight sim computer.

They advertise it but I confirm perfect support with 2019 Mac Pro. My only issue right now is that the depth of the rear screw puts a lot of pressure on the M.2 SSD when the screws are fully screwed in. The pressure actually bends the m.2 in the middle, which of course has a negative effect on the drive and reduces contact with the cooler. Your M.2 drive may come with a thick copper sticker that you can remove to make this easier and/or screw the screws in about halfway. Look at the heatsink…

I just installed it on my MacPro5.1 with Mojave. So far, so good. I had no problems with the installation. I ran the HD test and the speed on the drive was over 1400MB/s. On my old SSD (ElectraSSD) I get around 266 and 120 MB/s (read/write), so this drive is indeed much faster.

Bought for a non-Mac as I wanted to use a second M.2 drive and had an unused PCIe slot. No problem. There are cheaper devices that do more or less the same job, but these are better than most.