Samsung acquired software developer NVELO a while back, which was a company known for its SSD caching technology. It is a feature of Samsung’s Magician software (v4.2 or newer) that can speed up the drive significantly and can be enabled with a single-click (followed by a reboot). RAPID is an acronym for Real-Time Accelerated Processing of I/O Data. Endurance ratings are relatively high thanks to the move to 3D V-NAND as well-the 120GB and 250GB drives are rated for 75 TBW, while the higher capacity 500GB and 1TB drives are rated for 150 TBW.Īnother interesting feature carried over from previous-gen drives is dubbed RAPID. If you do the math, however, you’ll find that the drives leave roughly 9% of the NAND capacity for over-provisioning, which is typical of many current SSDs. The 500GB drive you see here has four 128GB pieces of NAND. All of the Samsung 850 EVO drives are also outfitted with 32-layer 3D V-NAND 3bit MLC NAND flash memory of varying capacities. The 120GB drive sports 256MB of cache, the 250GB and 500GB drive have 512MB of cache, and the 1TB drive has 1GB of cache. Since we’ve already mentioned power here, we should also point out that the 850 EVO series offers support for low-power Dev-Sleep mode, which can help extend battery life in mobile devices.Īll of the Samsung 850 EVO series drives also feature some LPDDR2-1066 DRAM cache memory. Note, however, that the 1TB mSATA drive has an MEX controller.
Samsung claims it made this move in order to save power, because the extra core didn’t help performance on the lower capacity drives.
SAMSUNG SSD 850 EVO DRIVER FOR MAC PRO
The controller is fundamentally similar to the triple-core MEX controller used in the recently released 850 Pro series, though a core has been removed. We should mention that this drive (and the 120GB and 250GB models) feature dual-core Samsung MGX controller. And as you can see, the PCB is tiny and relatively clean, packing only the controller, NAND, and a bit of memory. The drive you see pictured here is an SSD 850 EVO 500GB M.2 model.
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