Sandisk Ultra 3D & WD Blue 3D 1TB SSD review

First 3D NAND-SSDs of Sandisk and WD tested

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Performance consistency

In order to measure the performance consistency of the SSDs we once again ran a 4k random write workload with a queue depth of 32, while taking a snapshot of the drives' performance every second. We then calculated the standard deviation of the results for the interval between 1800 and 2000 seconds. A lower standard deviation means less variation, and thus a more constant level of performance. For ease of comparison, the second chart once again shows the steady state level in the same test. Keep in mind that having highly constant relative performance but very poor absolute performance is ultimately rather useless.

The consistency is not as good as that of the Samsung drives and the Crucial MX300, but not as bad as the true budget-SSDs. This is mostly due to the continuous 'bursts' of performance during the write test, after which the speed dips for a bit. .

Sandisk Ultra 3D SSD 1TB

Sandisk Ultra 3D SSD 1TB


Compare

two products discussed in this review

  Product Lowest price

Sandisk Ultra 3D SSD 1TB

SSD, 1000 GB, Serial ATA 600, Marvell 88SS1074, 560 MB/s, 530 MB/s, 2.5 inch

Specifications Test results Reviews Prices

£269.94

Avg. £322.35
5 shops, 4x stock

Western Digital Blue 3D 1TB

SSD, 1000 GB, Serial ATA 600, Marvell 88SS1074, 560 MB/s, 530 MB/s, 2.5 inch

Specifications Test results Reviews Prices

£270.76

Avg. £284.02
6 shops, 4x stock

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