Samsung 750 EVO 500GB SSD review

Memory (DDR4/DDR5) and Storage (SSD/NVMe) 367 Page 2 of 19 Published by

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Specifications & Features

Samsung SSD 750 EVO Specifications & Features

Samsung is to offer several versions of the 750 EVO which includes a 120 GB, 250 GB and now 500 GB model. The sample that has arrived in our secret test facility is the 500 GB version of the drive. The 750 EVO series will come with TLC NAND flash memory from Samsung's latest 16 nm planar NAND node.

16 nm planar (2D) flash array is more cost effective than 3D NAND (vertically stacked). This allows Samsung to offer the 750 EVO at a lower price point than the 850 EVO. Another difference with the 850 series is that the 750 EVO is (currently) not compatible with Samsung's RAPID caching software. The Samsung website does make mention of the SSD being compatible with TurboWrite technology and RAPID mode

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So Planar NAND is used, not 3D NAND. 3D NAND is physical vertical NAND cell stacking not to be confused with chip stacking in a multi-chip package. In 3D NAND, NAND layers, not chips, are stacked in a single IC. The good news is continued cost reduction, smaller die sizes and more capacity per NAND chip. Also, installed NAND toolsets in the wafer fabs can, for the most part, be reused, thereby extending the useful life of fab equipment. 

Specifications
  • Type: Solid State Drive
  • Type: 2.5" 7 mm (Ultraslim) Form Factor
  • Type: 750 EVO Series
  • Storage Capacity: 500 GB
  • Sequential Read Speed: Up to 540 MB/s
  • Sequential Write Speed: Up to 520 MB/s
  • Random Read Speed Up to 98K IOPS
  • Random Write Speed Up to 88K IOPS
  • Warranty: 3 Years

Controller Architecture

The 850 EVO has been equipped with Samsung's newest revisions controllers, I say controllers as the 120/250/500 GB versions get the Samsung MGX controller and (for the 850 series) the TB versions a Samsung MHX controller. The controllers are nearly similar, based on an ARM-based controller that of course is SATA 6 Gb/s compatible and can be paired with the latest NAND flash memory. Samsung mentioned in some tech white-papers that the EVO's MGX and MHX controllers are able to get you superior multi-tasking results under heavy I/O loads and provide steadier performance on more tasks. The MGX/MEX controller itself is based upon an ARM Cortex R4 processor. 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. And that fact all by itself makes Samsung's claim on superior multi-tasking a very likely one.

Pricing

I just pulled some numbers from some online etailers. Making your own SSD with your own controller, own PCB, own cache chips and own NAND flash memory does have advantages as Samsung is able to keep the prices very competitive as this product is made 99% in-house.

Prices are 149 EURO incl VAT for this 500 GB model. Not bad, especially when you consider that this is a mainstream class SSD that offers enthusiast class SSD performance (as you are about to find out from our benchmarks).


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