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2019 Mac Pro: OWC Accelsior 4M2 PCIe SSD

OWC Accelsior 4M2 PCIe SSD

MPG tested the $9399 Apple 2019 Mac Pro with 384GB OWC memory.

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This page evaluate the 8TB and 16TB OWC Accelsior 4M2 PCIe SSD in the 2019 Mac Pro.

The OWC Accelsior 4M2 PCIe SSD has 4 slots for M.2 NVMe SSD modules. It is shipped with SoftRAID to combine those 4 modules into a single volume. As tested here, it was configured as a single RAID-0 stripe volume. It is also possible to configure it as 4 individual volumes (one per blade), or dual 2-blade volumes, or a RAID-4, and a variety of other possibilities, all courtesy of SoftRAID. Super fast and easy no matter what.

Results: speed across entire capacity, large I/O sizes

Tested using the fill-volume command of diglloydTools DiskTester.

OMG! This performance obliterates any SSD ever tested by MPG, doubling previously top-end speeds. Not enough? Two cards can be set up as an 8-blade RAID with speeds that should hit 10-12 gigabytes per seconds, which is fairly pointless, but very cool.

Next, see the speed versus transfer size graph, also impressive.

8TB OWC Accelsior 4M2 PCIe SSD in 2019 Mac Pro: speed across entire capacity

The 16TB model (June 2020) delivers similar performance. This runs rings around a hard drive at about 25 times faster across the entire capacity.

16TB OWC Accelsior 4M2 PCIe SSD in 2019 Mac Pro: speed across entire capacity

Results: speed vs I/O size

Tested using the run-sequential-suite command of diglloydTools DiskTester.

Bat shit fast! Speed with only 256 KiB transfers already approaches maximum speed of any Apple internal SD and by 512 KiB, the OWC Mercury Accelsior 4M2 trounces the very fastest Apple internal SSD at its best. The Accelsior only gets faster from there!

OWC Accelsior 4M2 PCIe SSD in 2019 Mac Pro: speed vs transfer size

Below, the 16TB model (June 2020) delivers similar performance.

16TB OWC Accelsior 4M2 PCIe SSD in 2019 Mac Pro: speed vs transfer size
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