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Samsung 840 Evo SSD review: the entire series tested!

Samsung's affordable SSDs get a boost

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Introduction

Last week Samsung announced the new 840 Evo SSD series to replace the existing 840 series. The write speeds should be significantly higher, but the affordable price remains the same. We tested the entire series consisting of 120 GB, 250 GB, 500 GB, 750 GB and 1 TB models.

Samsung 840 Evo SSD


The current 840 series was the first to use TLC memory. In triple level cell memory, three bits are saved to each memory cell. The more common type is MLC (multi level cell) where two bits are stored per cell. That means Samsung only needs two-thirds the number of memory cells for the same amount of storage. Fewer chips mean lower production costs. Along with the fact that Samsung has its own controller and its own flash, it made it possible to make the 840 very affordable. A Samsung 840 250 GB currently costs an average of £140/ €159, and you can even find even cheaper deals. These price levels are challenging for the competition. Their affordability and the unparallelled performance of the 840 Pro series have helped Samsung increase its market share for SSDs significantly.

TLC memory has the drawback of taking longer to write to, which lead to relatively slow write performance for the 840 SSDs. Samsung came up with a clever solution for the new 840 Evo series that should increase the write speed. For TLC SSDs, Samsung guarantees a lifespan of at least 1000 writes, but our tests indicate you can expect much more. For normal consumer applications TLC memory is more than reliable enough.

Samsung 840 Evo 1TB

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nine products discussed in this review


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