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Upgrade the memory of your 2019 iMac up to 128GB
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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...

RAID-0 Scalability with Thunderbolt 2: Separate Bus or Daisy Chain?

Following up from the prior research using three OWC Thunderbay 4 units, I wondered what effect using three Thunderbolt 2 busses on the 2013 Mac Pro would have instead of daisy chaining.

The result show that somewhere around 6 drives, daisy chaining starts to break down, even with Thunderbolt 2 as here. Hence careful choice of which devices go on which bus is key for high performance systems (and these are hard drives, not SSDs). It might mean (for example) housing four drives in two enclosures so that each enclosure can have full bandwidth, e.g. for SSDs.

Also, in spite of its two ports, the late 2013 MacBook Pro has only one Thunderbolt bus, so it maxes out quickly. As of this writing only the 2013 Mac Pro offers more than one Thunderbolt 2 bus.

RAID-0 striping scalability using OWC Thunderbay 4 with 5TB hard drives
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).


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Pelican ProGear 1810 LED Keychain Light (Blue)
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