![]() The size of the buffer is based on the volume size you purchase, meaning the 1TB model reserves 36 GB of the TLC storage, which divided by three means a 12 GB SLC buffer (as only one out of three cells is being used to write). Writing one cell instead of three available does mean another 3:1 volume reduction of the storage buffer. So for that specific buffer all write transactions now will be written as SLC and this can be speed up tremendously. These TLC cells will be used as SLC (one bit per cell) which allows them to be programmed faster. On all EVO drives Samsung now uses a fixed part of the available NAND as a buffer. This is where TurboWrite comes into play. The downside however is that programming TLC NAND takes a bit longer than your average MLC or SLC based NAND chips, hence the slower write performance you see overall. The advantage there is that you need fewer cells to write/store and thus that makes NAND cheaper overall. As you guys have been able to read by now, the new EVO drives make use of TLC (Toggle) NAND memory in which data is stored in a 3-bits wide cell. #HOW TO FORMAT SAMSUNG SSD 850 EVO 500 GB SERIES#And that fact all by itself makes Samsungs claim on superior multi-tasking a very likely one.Ī new and interesting feature on the EVO series is called TurboWrite, which is going to help out greatly with the smaller 120 and 250GB versions of the EVO SSDs. It has three cores that can execute multiple instructions at once, allowing, for example, one to be used for reading data, one for writing data and another for optimization. The MEX controller itself is based upon an ARM Cortex R4 (400MHz) processor. This is a triple-core ARM-based controller that is of course SATA 6Gb/s compatible and can be paired with the latest 1xnm NAND flash memory. ![]() That boost alone is responsible for quite a bit of the performance improvements of the EVO series. The controller however has received a clock frequency change from 300 MHz in the MDX to 400 MHz for the MEX. So basically these are small improved respins of the same controller used, and yes it uses the very same 3-core ARM Cortex R4 base product. That means these are small evolutionary changes based on the same architecture. ![]() #HOW TO FORMAT SAMSUNG SSD 850 EVO 500 GB PRO#In fact there's an easy way of explaining that name, the MCX controller was used in the 830, the MDX in 840 and 840 Pro and the MEX is now used in the 840 Evo. Storage Capacity: 120, 250, 500, 750, 1000 GBĬoming from the 840 and 840 Pro you'll notice that Samsung now is using the MEX controller. ![]()
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