Flash storage for everyone: 67 SSDs round-up

67 SATA en NVMe SSDs on our new test bench

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Power consumption

We use two test methods for the power consumption of SSDs: a standard test method for measuring SATA SSDs and an advanced test method with a riser for PCIe SSDs.

SATA SSDs

We measure the power consumption of SATA SSDs using a BTO W540EU laptop, based on an Intel Core i3 3120M CPU and the Intel H77M chipset. We measure the power consumption of the SSDs both in idle mode and during a 4k random write and 1 MB sequential write workload. We do this test with a laptop because it is precisely then that many SSDs implement optimisations for low power consumption.

In idle, the power consumption of SATA SSDs is relatively close to each other. Only the Kingston UV400 and UV500 series consume significantly more power than the other drives. For use in a laptop you should look further. In absolute terms, many Samsung drives are very economical, and the same goes for consumption under load. While an 860 Evo uses less than 2 watts to write a large file, the Crucial MX500 uses 2.5 watts and older SSDs like the Kingston SSDNow V300 and Crucial BX200 even more than 4 watts. In all current models, such excesses no longer occur. The King of Economy is the WD Green 2018, but the trade-off is that it is very slow.

  • Idle
  • 4k random write
  • 1MB sequential write

M.2 / PCIe SSDs

We test M.2 SSDs with a flow meter that measures how much current passes through the PCI slot. Unfortunately, this is not precise enough for valid measurements of idle consumption, but it does meet the requirements for measurements during load. Unlike before, we can now say something about the consumption of M.2 and PCIe SSDs.

In the case of PCI-based SSDs, we see greater differences. With its single-package design, the Toshiba OCZ RC100 is not the fastest, but it is very economical. The WD Black 2018 also excels in terms of efficiency. The Samsungs consume a lot of money during the sequential writing test but it is not as bad during the random write test. The more high-end Optane models consume significantly more than regular PCIe SSDs and the absolute bulk consumer is the Kingston DCP1000, but that is a combination of four SSDs on one circuit board.

  • 4k random write
  • 1MB sequential write


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67 products discussed in this review

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