Today we're going to RAID 0 a pair of Samsung's newest SSD's for your viewing pleasure. So far Samsung is the only player to implement TLC (Triple Level Cell) NAND technology into a retail product. Samsung is looking to revolutionize solid state storage by producing products that have more capacity at a lower cost.
Samsung first introduced us to TLC based solid state drives with their original SSD 840. Samsung's SSD 840 proved to be a solid performer as well as a very reliable platform. Samsung proved beyond a shadow of a doubt that TLC NAND is a totally viable option for consumer based storage implementation.
Samsung's recently launched SSD 840 EVO is a second generation TLC based SSD. Building on the success of the original SSD 840, Samsung is taking TLC implementation to a whole new level. EVO stands for "evolution", so, as you might guess, Samsung is billing their new SSD 840 EVO as "the next evolution in solid state storage".
What makes the EVO the next evolution in solid state storage? In my opinion, the most important technology implemented into the EVO is what Samsung calls "Turbo Write" technology. Turbo Write technology is a write acceleration layer Samsung's baked into their new 19nm TLC NAND.
Turbo Write is an emulated SLC (Single Level Cell) layer baked into the EVO's NAND array. Special programming allows a portion of the EVO's TLC based NAND array to operate like SLC NAND. This pseudo SLC layer allows for write acceleration because programming one bit per cell (SLC) can be accomplished at a lower latency than programming three bits per cell (TLC).
Turbo Write technology successfully mitigates the shortcomings of TLC NAND by accelerating write speed, lowering write amplification, and greatly increasing endurance. Turbo Write technology allows Samsung to offer the consumer a solid state storage solution that has class leading performance AND pricing all-in-one product.
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