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ADATA SP900 256GB SATA M.2 2280 SSD – Review

Posted October 16, 2014 by Sandy Bruce in Storage, HDs & SSDs


Release Date: Currently Available
Price at time of Review: $140


Smaller size, easy to install, consistent speeds, price compared to other M.2 drives


Price compared to Standard SSDs, Speed largely unchanged from Standard SSD
Overall there are just enough benefits to justify the $20 average premium for using M.2 instead of a standard SSD. We are just now stepping into the M.2 era and the SP900 is a good stepping stone.
by Sandy Bruce
Full Article




There has been a lot of anticipation for M.2 to be fully released upon the masses. Well folks, we are still waiting. With only a handful of M.2 compatible drives available choices are limited. Apparently, it’s better than having a bunch of motherboards available, but no M.2 devices to choose from (Z97 release day). So now that Intel’s newest flagship platform has shipped we are starting to see more M.2 SSDs on the market. There is still not an abundance of choice or enough to continue the downward push of SSD prices, however we see light at the end of this tech tunnel, even if it’s just a little further than most of us would like. ADATA, a leader in memory technology, sent us one of the two types of M.2 drives available, the SP900 256GB M.2 SSD.

Here is a little about ADATA and what they do… then we can move on to learn about M.2.



The World’s Leading Memory Brand
Founded in May 2001, ADATA Technology Co., Ltd. is committed to providing top-notch memory solutions that enrich the customer’s digital life. The company’s dedication to integrity and professionalism has made ADATA the leading memory brand with the most award-winning product designs.

Backed by technical expertise, state-of-the-art manufacturing facilities, and premium customer service, ADATA offers complete memory solutions including DRAM modules, USB flash drives, memory cards, solid state drives and portable hard drives.

ADATA understands that professionalism and innovation, as well as the value of its products and services, drive a company’s competitiveness in the market. ADATA’s devotion to quality requires performing at the highest standards as they relate to ID design, purchasing and supply-chain management (raw materials), manufacturing processes, quality control and testing.



Capacity  128GB/256GB/512GB
Form Factor  M.2 2280
NAND Flash  Synchronous MLC
Controller  LSI SF-2281
Dimensions (L x W x H)  22 x 80 x 3.5mm
Weight  8g (0.28oz)
Interface  SATA 6Gb/sec
Performance(Max) 128GB Performance (ATTO)
Read : Up to 550MB/s
Write : Up to 530MB/s
Maximum 4K Random write IOPS up to 85K
256GB Performance (ATTO)
Read : Up to 550MB/s
Write : Up to 530MB/s
Maximum 4K Random write IOPS up to 86K
512GB Performance (ATTO)
Read : Up to 550MB/s
Write : Up to 530MB/s
Maximum 4K Random write IOPS up to 86K
Operating temperature  0~70 °C / -40~85°C
Storage temperature  5 ~ 95% RH (0 ~ 55°C)
Shock resistance  1500G / 0.5ms
MTBF  1,200,000 hours





    I’m confused by the bits to bytes conversion this site is using for SATA speeds. Why would 6 gigabits/sec equate to 600 megabytes/sec? One byte is eight bits, therefore 6 Gb/S would be approximately 750 MB/s. Are you trying to get closer to real-world speeds due to overhead? If that’s the case, the overhead shouldn’t increase for higher speeds, so one wouldn’t expect the 10:1 ratio you use for faster speeds bits to bytes. Is there some new piece of tech info I’m missing?


      You are overthinking it a bit. It’s simply generally accepted in the PC industry that for simplicity’s sake we use a 10:1 ratio. We all know that binary doesn’t equate that way, but it makes it less confusing for the lay person and makes for quicker math that is roughly equivalent.

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