Adata SU800 vs. Samsung 860 EVO: Which is the more reliable SSD?


Over the years, external SSDs have become quite popular due to their vast storage space, fast speeds, and durability. Adata and Samsung are some of the most reputable SSD brands available in the market. Let us review these two brands and discover their similarities and differences.

Whether you are upgrading your traditional hard drive or replacing an existing solid-state drive to get better performance, you can get confused by which SSD brand will meet all your storage needs. Adata and Samsung are two reliable brands that produce premium quality storage devices. These two brands are widely compared due to their similarities in design, build quality, and performance. Adata is well-rated for its unique and durable build quality, while Samsung delivers an ultra-modern and compact-sized SSD with remarkable performance.

Here is a detailed guide overview of both external SSDs to help you make an informed decision when choosing between them. Let us discuss the specifications of these two devices and find out which is the more reliable SSD.

What are the differences between Adata and Samsung SSD?

Model name
Adata Ultimate SU800
Samsung 860 EVO
Flash memory and controller
3D TLC NAND flash memory and SMI controller with SATA III interface (6Gbps)
64-layer V-NAND flash memory and the Samsung MJX controller with SATA III interface
Design and storage space
100.45 by 69.85 by 7mm drive available in multiple capacity points, including 128GB,256GB, 512GB, and 1TB
2.5-inch drive in a black casing with capacity points of 250GB, 500GB, 1TB, 2TB, and 4TB
Sequential read and write speeds of 560Mbps and 520Mbps, and a maximum 4K Random read and write speed of up to 80K IOPS
Sequential read and write speeds of up to 550/520 Megabytes per second and maximum 4K read and write of 98K/90K IOPS, respectively

Adata vs. Samsung SSD – How do they compare?

Flash memory and controller

Since 2016, Adata has been using 3D TLC NAND flash memory and Silicon Motion controller in its external SSDs. Similarly, the Adata Ultimate SU800 features the Micron 3D TLC NAND memory, a high-density memory that is less expensive to manufacture than the traditional multi-layer cell (MLC). This drive’s memory stacks its memory vertically, giving the drive a higher endurance rating than that of the more conventional non-3D TLC memory. It also uses the SM2258 controller, which was specifically built for use with its flash memory. As such, the flash memory and controller of this drive provide the perfect blend of endurance, price, and performance.

On the other hand, Samsung has its own line of flash memory and controller it uses for its external SSDs. As such, the Samsung 860 EVO uses its own 64-bit V-NAND, which is 30%more energy efficient and 1.5 times than its predecessor, the 48-bit V-NAND flash memory. Similar to the Adata Ultimate SU800 memory, this memory also stacks its flash cells vertically and in 3D for higher speed and density. The drive also utilizes Samsung’s MJX SATA controller for increased power efficiency and speedy performance.

Samsung 860 EVO is, therefore, equipped with a better performing memory and controller than the Adata Ultimate SU800, as it increases the drive’s power efficiency and overall performance.

Design and storage space

Adata is known to deliver compact and premium quality SSDs in multiple capacity points. The Adata Ultimate SU800 is a 7mm (2.5-inch) thick drive that comes with a license key for Acronis True Image HD-drive migration software and a 2mm spacer for laptops with a 7.5-9.5mm-high drive bays. The drive is available in four standard mainstream capacity points of 128GB, 256GB, 512GB, and 1TB. Each of these drives features an impressive price to capacity ratio.

Alternatively, Samsung produces portable external SSDs with a simple design. As such, the Samsung 860 EVO is a 2.5-inch drive with a black enclosure and light grey square at the top of the Samsung branding. On the flip side, the drive contains a large sticker with all the essential information about the drive, such as serial number, capacity, and model. This drive is available in five sizes, including the 4TB, 2TB, 1TB, 500GB, and 250GB.

Samsung 860 EVO offers more storage capacity than the Adata Ultimate SU800.


Both Samsung and Adata SSDs feature impressive speeds that facilitate increased performance of desktops, PCs, and laptops. Adata’s Ultimate SU800 features an impressive DRAM memory cache as well as a built-in intelligent SLC caching that boosts the drive’s sequential read and write speed to a maximum of 560Mbps and 520Mbps, respectively. Its read/write performance is five times faster than the traditional HDD, making simple tasks, like starting up your desktop or laptop, run quicker and more efficiently. The drive also consists of RAID engine and Data Shaping that enhances overall data protection and drive stability. It also has in-built software, such as DEVSLP and high TBW, that will instantly improve the performance of your device as it enhances its durability, performance and ensures effective power management.

Samsung’s 860 EVO features consistent speeds even when multi-tasking or under heavy workloads, ensuring fast and efficient file transfer. The drive has an impressive sequential read and write speed of 550Mbps and 520Mbps, respectively, with the help of its Intelligent TurboWrite technology. It also has eight times higher endurance rating than the 850 EVO, making it more secure for rendering and storing large files and data.

The Adata Ultimate SU800 is, therefore, slightly faster than the Samsung 860 EVO, with a sequential read and write speed of up to 560/520Mbps.

Adata SU800 vs. Samsung 860 EVO SSD – A comparison review

Adata Ultimate SU800

As one of the popular external SSDs available in the market, the Adata Ultimate SU800 has several notable features. The drive comes with a Micron 32-layer 3D TLC NAND memory paired with Silicon Motion’s SM2258 controller, a sequential read and write performance of up to 560/ 520Mbps.

The Ultimate SU800 also features DRAM memory cache buffer as well as built-in SLC caching for improved and consistent performance of the drive. It also contains the Low-Density Parity Error Correction Code (LDPC ECC), which improves the drive’s integrity and reduces data error.

More so, the drive comes with Migration Utility Software and a free ADATA SSD toolbox for easy and efficient data transfer. It also has low power consumption and better energy efficiency that contributes to its extended battery life and is virtually silent on operation.


  • Available in multiple capacity points of 128GB, 256GB, 512GB, and 1TB
  • Affordable
  • Fast and consistent performance
  • Good software


  • Buyers have to register to receive ‘bundled’ migration software license key


View price on Amazon


Samsung 860 EVO

Samsung is one of the most reliable device manufacturers in the SSD market. They deliver high-quality devices and also ensure their devices feature exceptional performance at incredible prices. The Samsung 860 EVO is no different. With this drive, consumers can expect to receive a 2.5-inch SATA 3 interface cable, the solid-state drive, and a User manual in its package.

The drive features Samsung’s innovative 64-bit V-NAND technology paired with its MJX controller for fast and reliable performance. It also has AES 256-bit Hardware-Based Encryption that allows you to encrypt and protect your data safely.

The 860 EVO from Samsung comes with a 5-year warranty and is compatible with Windows, MAC OS, and Linux. With sequential read and write speeds of up to 550Mbps and 520Mbps and its Intelligent TurboWrite technology, this drive delivers high speeds to facilitate speedy file transfers.

Samsung’s 860 EVO is available in five capacity points of 250GB, 500GB, 1TB, 2TB, and 4TB, and also comes with Samsung Magician Software that aids in managing your SSD with a smooth and intuitive user interface. You will also receive firmware updates when released, and performance benchmark to enhance the reliability, performance, stability, and compatibility of your drive.


  • Reliable and speedy performance
  • Impressive software package
  • Exceptional endurance rating
  • Its price to capacity ratio is reasonable as it delivers huge storage space of 250GB, 500GB, 1TB,2TB, and 4TB
  • The drive is from a reputable and reliable brand


  • Expensive
  • SATA III interface creates a performance ceiling for the drive


View price on Amazon



This article has given an overview of some of the most popular external SSDs from Adata and Samsung. Both of them are all-round top quality drives with the ability to meet all your storage needs. Adata SSDs are affordable drives with excellent performance and have several accessories in their package, including a 2mm spacer and bundled software. Samsung also has quality features such as its class-leading endurance rating, incredible performance, and its Samsung Magician Software.

Final verdict: So, which is more reliable between Adata SU800 and Samsung 860 EVO?

Adata and Samsung SSD have many similar features. For instance, they have the same TLC NAND flash memory, remarkable storage capacity, and impressive build quality.

However, when it comes down to it, the Samsung 860 EVO comes with built-in migration software, and offers a sequential read and write speed of 550Mbps/520Mbps, respectively. It also has five capacity points, which are perfect for storing vast amounts of high-quality data.

Frequently Asked Questions

What is the difference between Samsung 860 EVO and the Samsung 860 PRO?

The 860 EVO has the 3-bit TLC V-NAND memory while the 860 PRO has the 2-bit MLC memory. As such, these two drives differ in performance and durability as the 2-bit MLC memory is faster and increases the drive’s longevity. Another difference is that the 860 EVO is cheaper than the 860 PRO.

How can I update my Adata SSD firmware?

To update your Adata SSD firmware, go to the ADATA website and find your corresponding product model. Download the firmware version you need and decompress it once downloaded. Find the program named ‘ADATA_SF_FIELDUPDATER’ and open it to begin the firmware update.

Mathew Cain

Mathew Cain has been working in the IT industry for over 10 years and is well versed with the problems that many people experience and are not accorded comprehensive and reliable information to help solve them. The primary function of a central processing unit is to store and retrieve information fast, but this is rarely the case if the unit has a small storage and processing capacity. And that is why Data Storage Guide has decided to give back the power to the user, by providing them with the most current and reliable information. You will, therefore, find information on the various storage devices and how best you can retrieve your lost data and also get rid permanently of sensitive information.