Continuing the discussion from SSD or SD for extra storage?:
Thought it might be time for a new set of drive benchmarks.
iMac Pro, 2017, 8-core Xeon, 32GiB, etc.
CalDigit TS3 dock for USB connections
DiskMark version 2.3
Larger numbers (megabytes per second) are better (except price 
)
Sorted by Random Write which seems to be everyone’s Achilles’ heel.
| Drive Name | Sequential Read | Sequential Write | Random Read | Random Write | Drive, Enclosure, etc. | Paid or Price |
|---|---|---|---|---|---|---|
| Data | 1605 | 1825 | 215 | 129 | Sabrent Rocket XTRM 2TiB RAID0 pair, TB3 interface direct to iMac Pro | $583 + $400 |
| System-Volume | 2416 | 2831 | 248 | 120 | iMac Pro internal drive | $5,000 |
| iMac Pro Bootable | 287 | 238 | 41 | 79 | SanDisk Extreme 1TiB SSD (old generation) | $160 |
| Slow Blue | 107 | 109 | 39 | 69 | WD Passport 4TiB | $155 |
| Arq Temp | 95 | 94 | 79 | 58 | WD My Book 1230 | $80 |
| Hourly A | 115 | 101 | 92 | 57 | WD Red 4TiB in Sabrent dock | $140 + $28 |
| NVME 1 | 41 | 43 | 29 | 31 | WD Black SN750 in Sabrent enclosure (terribly slow enclosure) | $110 + $29 |
| Neuro | 90 | 65 | 33 | 9.2 | Sandisk Extreme 64GiB micro SD XC V30 | $12 |
| USB DISK | 110 | 15 | 13 | 6.5 | PNY 32GiB thumb drive | $4 |
| SO-FAT | 80 | 18 | 22 | 6.4 | Microcenter 32GiB microSDHC Class 10 | $8 |