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Upgrade the memory of your 2018 Mac mini up to 64GB
64GB for iMac 5K

2017 or 2019 models
$550 savings vs Apple!
64GB costs *less* than 32GB Apple!

TESTED: OWC 40TB Thunderbay 4 Mini SSD

GetOWC Thunderbay 4 Mini SSD RAID Edition at MacSales.com.

40TB SSD: OWC Thunderbay 4 Mini

Following up on yesterday’s overview of OWC 40TB Thunderbay 4 Mini SSD, here is performance.

This is the best performance MPG has ever seen with Thunderbolt 2 (or from any external SSD). It sets the new benchmark.

  • Read performance flatlines at 1425 MB/sec
  • Write performance flatlines at 1192 MB/sec

Those are average figures across across a gigantic 39.37TB volume! Context: those figures beat the internal 1TB SSD in the MPG 2013 Mac Pro.

There looks to be cruising room here for 4K raw video capture. Or any hyper demanding task for writes and even better for reads.

It looks like Thunderbolt 2 has throttled the read performance. MPG expects OWC to offer a similar solution with Thunderbolt 3 in 2017, in which case the read speeds should rise to even higher levels.

Tested using a> disktester fill-volume --xfer 128M with diglloydTools disktester

Write @ 1137 MiB/sec = 1192 MB/sec, Read @ 1359 MiB/sec = 1425 MB/sec
Test size 37.0 GiB = 39.37 GB in 1000 37.0 GiB files

SoftRAID showing a 40TB RAID-0 stripe SSD in OWC Thunderbay 4 MIni

A wide range of capacities is available. Capacity rating reflects usage as RAID-0 stripe or single drives. Using in RAID-5 mode means that 1/4 of the capacity used for parity, e.g., reducing 40TB to 30TB usable capacity.


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