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ADATA Premier SP550 SSD Review

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CrystalDiskMark 3.0 Tests

CrystalDiskMark 3.0 is a file transfer and operational bandwidth benchmark tool from Crystal Dew World that offers performance transfer speed results using sequential, 512KB random, and 4KB random samples. For our test results chart below, the 4KB 32-Queue Depth read and write performance was measured using a 1000MB space. CrystalDiskMark requires that an active partition be set on the drive being tested, and all drives are formatted with NTFS on the Intel P67 chipset configured to use AHCI-mode. Benchmark Reviews uses CrystalDiskMark to illustrate operational IOPS performance with multiple threads. In addition to our other tests, this benchmark allows us to determine operational bandwidth under heavy load.

CrystalDiskMark uses compressed data, so sequential file transfer speeds are reported lower than with other tools using uncompressed data. For this reason, we will concentrate on the operational IOPS performance in this section.

CrystalDiskMark 3.0 reports sequential speeds reaching 537.5MB/s reads and 481.6 MB/s writes. Performance is strong through most of the other parts of this benchmark, although they start to lag a bit, especially in writes, when the utility queues up a bunch of 4K writes.

ADATA SP550 240GB_cdm

240GB Premier SP550 SSD CrystalDiskMarkResults

The chart below summarizes 4K random transfer speeds with a command queue depth of 32. The ADATA Premier SP550 does a bit better than mid-pack on reads, but falls rather far behind on writes with its 249.1MB/s score.

CrystalDiskMark-4K_Results

In the next section, we continue our testing using Iometer to measure input/output performance…


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4 comments

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  1. HERETIC

    RE.That’s the data being written to the drive’s 256MB of cache RAM.P8

    I think it’s about 3GB of flash the drive is using in SLC mode…….

    1. GraphsDontLie

      Graphs tell the tale. Look at the spike, well over 1% of the run is fast until it tails off. No way 256MB cache (abit more than 0.1% of the capacity of the drive) accelerated writes for over 1% of the time.

      And if that is an SLC cache, then ALL the writes go through that little bit of SLC…seems like an early failure waiting to happen once the SLC goes.

  2. Master Chen

    Actually, there’s also a 960GB model of SP550 available out there, but it’s quite rare and usually can be found only on Asian market. But still, just take a note.

    1. Olin Coles

      Good information. The 960GB model might not have existed two months ago, when this article (and the product) originally launched.

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