↝ OWC / MacSales.com... ↜
↝ diglloyd Deal Finder... ↜
Buy other stuff at Amazon.com...
Sustained Transfer Speed for Large Transfers
OWC Mercury Aura SSD for Mac Pro: 1TB about $899, 2TB about $1479.
DiglloydTools DiskTester was used with the fill-volume command to fill the entire 2TB capacity. The test was performed first with zeroes, then with incompressible data because some SSD controllers slow down with incompressible data.
disktester fill-volume --xfer 128M
disktester fill-volume --xfer 128M --fill randomblock
Incompressible data is all but the same speed for reads. And for the first ~1.3TB, write speed with incompressible data held at about 620 MB/sec. Thereafter, write speed dipped to the ~530 MB/sec level for the remainder of the capacity. Well, this is a worst case scenario unlikely to occur with any real usage (filling 2TB of SSD with totally incompressible data in 90 minutes!).
These figures exceed the fastest SATA SSDs easily, though not as fast as Apple’s own SSD (though real world performance past 500 MB/sec hardly matters for most all apps). Moreover, the transfer speeds under more ordinary loads and transfer sizes are excellent.
Clearly to have this kind of performance in one internal 2TB drive is a big win. And if the alternative is an Apple 256TB or 512GB internal SSD reaching capacity, then either the 1TB or 2TB options are a welcome path.
Averages across the entire 2TB:
Zeroes: 687 / 728 MB/sec, standard Deviation: 17.5 / 0.70 MB/sec
Incompressible: 591 / 721 MB/sec, standard deviation: 42.0 / 0.93 MB/sec
Real world speed through the OS X file system, e.g. speeds a normal app can access (not unrealistic low-level driver-level performance).
Up to 128GB for 2019 iMac 5K!
Up to 64GB for 2015/2017 iMac 5K
Save nearly 50% over Apple pricing
1.3 GHz i5, 8GB, 512GB SSD
Apple Refurbished, Factory Sealed, Apple 1 Year Limited Warranty
$719 SAVE $430 = 37.0% Apple 12.9" iPad Pro (Mid 2017, 512GB, Wi-Fi Only, Gold) in Electronics: iPads and Tablets
$5699 SAVE $600 = 9.0% Apple 15.4" MacBook Pro with Touch Bar (Mid 2018, Space Gray) in Computers: Apple Macs
$2500 SAVE $300 = 10.0% Apple 15.4" MacBook Pro with Touch Bar (Mid 2018, Space Gray) in Computers: Apple Macs
$1000 SAVE $500 = 33.0% Westone W80 Eight-Driver True-Fit Earphones with ALO Audio and M… in Electronics: Audio