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Up to 128GB for 2019 iMac 5K!
Up to 64GB for 2015/2017 iMac 5K
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iMac 5K vs Mac Pro, Integrity Checker Verify
Related: 4K and 5K displays, computer display, CPU cores, diglloydTools, iMac, iMac 5K, Mac Pro, Macs, SSD
IntegrityChecker(tm) v1.2.3 64-bit, diglloydTools 2.2.7b
iMac 5K 4.0 GHz, 32GB, 1TB SSD, AMD Radeon R9 M295X 4GB GDDR5 -versus-
2013 Mac Pro 3.3 GHz 8-core, 64GB, 1TB SSD, D700
The two machines tested here are the fastest possible CPUs as of late 2014. The iMac 5K as tested here is well into Mac Pro pricing territory, approaching $5K as configured, though of course it includes the display.
diglloydTools IntegrityChecker 'verify' a large set of image files (SHA1 hash). IntegrityChecker is highly optimized for multi-scaling nearly perfectly out to 12 CPU cores, so I/O speed is the gating factor. Here the mix of files limits CPU core usage to about 1.5 CPU cores.
In theory, the 4 GHZ CPU of the iMac 5K (TurboBoost to 4.4 GHz) should surpass the Mac Pro 3.3 GHz CPU (TurboBoost to 4.0 GHz)—slightly. But it doesn’t pan out when disk I/O is involved, hence the faster SSD in the Mac Pro could be a real advantage for some users.
High capacity, high-performance fault-tolerant storage for photography and video.
Non-RAID or RAID-0/1/4/5/10.
Capacities up to 84 Terabytes!