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Save Big $$$$ on Memory for 2019 Mac Pro

Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).


iMac 5K Flash Drive (SSD)

MPG has a 1TB Apple SSD in the Mac Pro, and a 1TB SSD in the iMac 5K.

MPG was puzzled why IntegrityChecker 'verify' was running significantly slower on the iMac, which ought to run significantly faster (faster CPU clock with ~1.4 CPUs used).

Disk I/O speed is the culprit.

Mac Pro: writes at ~930 MB/sec and reads at ~1180 MB/sec.
iMac 5K: writes at ~716 MB/sec and reads at ~766 MB/sec.

The flash drive in the iMac 5K is a two-lane device. With each PCIe lane delivering 500 MB/sec but with ~20% overhead, peak speed is thus limited to ~800MB/sec (theoretical) for the iMac SSD (the Mac Pro allocates 4 lanes).

Real world speeds through the file system using diglloydTools DiskTester.
disktester run-sequential --test-size 8GB

Flash Drive (SSD) Performance
iMac 5K 4 GHz Radeon M295X vs 2013 Mac Pro 3.3 GHz 8-core D700
New Mac Pro?

Or iMac 5K or iMac Pro?
Consult with Lloyd ASAP before buying!


System configuration for CPU, GPU, memory, SSD, backup, RAID, optimizing performance, workflow.
For YOUR optimal workflow

Avoid costly mistakes in throwing money at the problem for less performance and/or buying the wrong machine for your own needs!

Remote screen sharing available for RAID, software configuration, etc.

More about 2019 Mac Pro vs iMac 5K vs iMac Pro...


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Apple 15.4" MacBook Pro with Touch Bar (Mid 2018, Space Gray)
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