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Samsung 840 EVO 1TB mSATA SSD Review

By: Chris Ramseyer | mSATA in Storage | Posted: Jan 1, 2014 1:42 pm
TweakTown Rating: 93%Manufacturer: Samsung

HD Tune Pro


Version and / or Patch Used: 4.00

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HD Tune is a Hard Disk utility which has the following functions:


Benchmark: Measures the performance

Info: Shows detailed information

Health: Checks the health status by using SMART

Error Scan: Scans the surface for errors

Temperature display


HD Tune Pro gives us accurate read, write, and access time results. It is now considered a must-have application for storage device testing.





Not only is the Samsung 840 EVO mSATA 1TB the largest mSATA drive we've seen, it's also one of the fastest when reading sequential data. With an average sequential read speed of 463.5 MB/s at 64KB, the 840 EVO is only slightly slower than the MDSSD BP4.




In this test, we write to every available user block to the drive, and thus we get past the Turbo Write area. For bursts, you can expect to write around 440 MB/s, and then that drops down to around 330 MB/s with the drive still somewhat fresh. When writing very large files to a drive populated with a significant amount of data, the performance can decrease even lower.


HD Tach - Sequential Performance after Random Writes




Here we see 128KB sequential read and write performance after a number of random writes to the drive. Surprisingly, the average write performance is still a bit higher than the average read performance; even after writing the random data to the drive. Turbo Write does a good job keeping the write performance high, even when working with large blocks of data.

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