ADATA SX900 256GB SSD review

Memory (DDR4/DDR5) and Storage (SSD/NVMe) 353 Page 2 of 17 Published by


Specifications and Features


Specifications and Features

So the sample that has arrived in our secret test facility is the 256GB version of the drive, which means it's also faster compared to the 128GB model.

The SX900 series will come with synchronous NAND, Intel has not yet released a spec sheet on the memory though Intel's proprietary NAND flash used is labeled: 29F16b0bccme2

The SSD leverages a SandForce SF-2281 controller and SATA 6 Gb/s interface to deliver read speeds up to 550 MB/s and writes up to 520 MB/s depending on volume size of the SSD.

The XPG (Xtreme Performance Gear) SX900 solid state drive is an expanded capacity SSD which uses new optimized firmware to utilize greater storage capacity of the NAND Flash components. The drive increases overall storage capacity for SSDs utilizing the SandForce 2281 controller, reaching 512GB, a 7% increase over common SSDs in the market that use a SandForce controller. They do so by cutting out the reserved drive provisioning.


After formatting the 256GB model we get 238GB of available volume space to us.

Its maximum sequential read and write speeds are 550/530 MB per second, with maximum random 4k write speeds as high as 85,000 IOPS. With capacities of 64, 128, 256, and 512GB.

Capacity 64GB /128GB /256GB /512GB
NAND Flash MLC (Mulit-level cell) Flash
Interface SATA 6Gb/s
Form Factor 2.5 inch
Dimensions 100 x 69.85 x 9.5mm (L x W x T)
Weight 76g
Performance 64GB Performance (ATTO) :
Read: Up to 550MB/S
Write: Up to 510MB/S
Multimedia Data Transfer (AS-SSD)
Read : Up to 380MB/S 
Write : Up to 88MB/S

128GB Performance (ATTO) :
Read: Up to 550MB/S
Write: Up to 520MB/S
Multimedia Data Transfer (AS-SSD)
Read : Up to 486MB/S 
Write : Up to 182MB/S

256GB Performance (ATTO) :
Read: Up to 550MB/S
Write: Up to 530MB/S
Multimedia Data Transfer (AS-SSD)
Read : Up to 510MB/S 
Write : Up to 320MB/S

512GB Performance (ATTO) :
Read: Up to 540MB/S
Write: Up to 465MB/S
Multimedia Data Transfer (AS-SSD)
Read : Up to 490MB/S 
Write : Up to 240MB/S
Operating Temp 0°C ~ 70°C
Storage Temp -40°C ~ 85°C 
Shock Resistance 1500G
Power Consumption 1.2W Active; 0.5W Idle
MTBF 1,000,000hrs
Warranty 3 years
Accessories 2.5" to 3.5" Bracket
Acronis True image HD, disk Migration Utility

Lowest prices we spotted are

  • 64GB -- 99 EUR
  • 128GB -- 160 EUR
  • 256GB -- 300 EUR
  • 512GB -- 615 EUR

Initial tests straight away show us that the product is fast alright, this product stays on top of the latest Marvell, Indilinx and sure, ADATA's  previous latest and greatest as well. Once it will become available in the stores you'll notice four SKUs initially, a 64GB, 128GB, 256GB and  512GB SSD.


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