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SanDisk SSD Plus and Z410 SATA III SSD Review

By: Jon Coulter | SSDs in Storage | Posted: Jun 7, 2016 3:10 am
TweakTown Rating: 52%Manufacturer: SanDisk

Iometer - Maximum IOPS


Version and / or Patch Used: Iometer 2014


We use Iometer to measure high queue depth performance. (No Partition)


Max IOPS Read




Max IOPS Write







With our configuration, we are able to exceed SanDisk's maximum read IOPS specifications. In fact, we are able to more than double it. None of the SanDisk offerings are able to match their specified maximum write IOPS specifications, not by a long shot. MDD's BP5e delivers the best performance of the bunch scoring a win for both read and write performance.



Iometer - Disk Response


Version and / or Patch Used: Iometer 2014


We use Iometer to measure disk response times. Disk response times are measured at an industry accepted standard of 4K QD1 for both write and read. Each test runs twice for 30 seconds consecutively, with a 5-second ramp-up before each test. We partition the drive/array as a secondary device for this testing.


Avg. Write Response




Avg. Read Response






The SSD Plus and Z410 display the worst read response for a SATA III SSD we've ever witnessed. The BP5e takes the win for the best read response. The SP550 wins for the best write response.



DiskBench - Directory Copy


Version and / or Patch Used:


We use DiskBench to time a 28.6GB block (9,882 files in 1,247 folders) composed primarily of incompressible sequential and random data as it's transferred from our DC P3700 PCIe NVME SSD to our test drive. We then read from a 6GB zip file that's part of our 28.6GB data block to determine the test drive's read transfer rate. Our system is restarted prior to the read test to clear any cached data, ensuring an accurate test result.


Write Transfer Rate




Read Transfer Rate






The main drawback to planar-based TLC SSDs is sustained write performance. This particular test happens to be the test we place the most importance on with regard to TLC SSDs. Terrible write transfer rates are inherent to SMI's SM2256 controller, which is THE reason no SM2256 powered SSD has ever received a TweakTown recommendation. When an SSD can't even write a large chunk of data as fast as even low performing spinning disk drives, it's not something we will ever be able to recommend to our readers. In contrast to the SM2256 powered SSDs the S10 powered SSDs deliver respectable sustained write transfer rates. Direct write to die for the win. This testing display's why we will continue to recommend Phison S10 powered TLC SSDs to our readers as the best bang for the buck in the super low cost segment.

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