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2019 iMac 5K: IntegrityChecker Verify

MPG tested the 2019 iMac 5K 3.6 GHz Intel Core i9 8-core / 128GB / 2TB / Radeon Vega 48. Purchase with 8GB memory, then add 64GB or 128GB OWC memory. See recommended Macs for photographers and videographers.

These tests made possible by loaner gear from B&H Photo and OWC, so please buy your gear at B&H Photo and OWC/MacSales.com using any link from this site or MacPerformanceGuide.com, ditto for OWC/MacSales.com. See also 2019 iMac 5K: Recommended Models and Accessories.

Unsure which Mac to get or how to configure it? Consult with Lloyd.

2019 iMac 5K

About

Cross-platform (any computer with Java), DiglloydTools IntegrityChecker runs SHA1 hashes on files to maintain data integrity checks. These days with so many Apple bugs, any professional should be using it to validate their data integrity, especially with macOS Finder silent data-loss risks and outright bugs when copying files.

The verify command of diglloydTools IntegrityChecker utilizes all CPU cores as efficiently as any application ever can, using sophisticated I/O algorithms to feed data to the CPU as fast as the OS can go. Performance will thus be gated by I/O speed unless all CPU cores are fed data fast enough to be fully utilized.

Results

With 8 CPU cores, the 2019 iMac 5K trounces 2017 iMac 5K, running almost twice as fast, showing that IntegrityChecker is supremely efficient, and also that the CPU cores in the 2019 iMac 5K are effective even when all eight CPU cores are fully utilized.

The 2019 iMac 5K can process almost 3 GB/sec (2948 MB/sec)!

Graph is MiB/sec (multiply by 1.0485 for MB/sec).

2019 iMac 5K: IntegrityChecker verify vs 2017 iMac 5K
"Vega64" should read "Vega48"
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