Seagate Ultra Compact SSD 2TB Review - A Pocket's Best Friend

With up to 2TB of fast USB storage taking up little more than the space of a ChapStick tube in your pocket, Seagate's Ultra Compact SSD is indeed amazing.

Seagate Ultra Compact SSD 2TB - A Pocket's Best Friend
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Senior Hardware Editor
Published
Manufactured by Seagate with an MSRP of $170 (STMX2000400)
4 minutes & 30 seconds read time
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TweakTown Rating: 95%
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Our Verdict

For its size, there is nothing more rugged, capacious or portable than Seagate's Ultra Compact SSD.

Pros

  • Compact
  • Rugged
  • Native USB

Cons

  • Price

Should you buy it?

AvoidConsiderShortlistBuy

Introduction & Drive Details

Can you carry your whole digital life in your pocket? You bet you can if you own Seagate's new "Ultra Compact SSD." Seagate's newest is incredibly compact, ultra-pocket-friendly, rugged, capacious, and, best of all, fast. With a full 2TB of 1,000 MB/s storage that is so pocket-friendly, you can literally carry your entire digital life around with you everywhere you go.

This silicon-sleeved IP54-rated pocket-friendly portable SSD is as rugged as they come. It can withstand drops of up to 3 meters and exposure to wet and dusty environments, keeping your data safe in any environment. Speaking of the environment, the Ultra Compact SSD is built with at least 35% recycled materials by weight, reducing environmental impact.

Seagate's Ultra Compact SSD is truly a premium pocket SSD. As a premium product, Seagate backs its newest portable offering with a 3-year limited warranty, Rescue Data Recovery Services, and Toolkit backup software. Additionally, upon product registration, you get a 6-month Dropbox Backup Plan and a 6-month Mylio Photos subscription for free.

The cableless, native USB, Type-C pocket-friendly SSD is compatible with platforms like Windows and Mac and devices including Android, iPhone, tablets, and gaming consoles, or, as we stated earlier, pretty much your entire digital life. Included for free is Seagate's easy-to-use Seagate Toolkit backup software to back up files to your computer and sync important projects to your drive.

Drive Details

ItemDetails
ModelSeagate Ultra Compact SSD 2TB
MSRP$180
Model NumberSTMX2000400
InterfaceUSB 3.2 Gen2 Type-C
Form FactorPen Drive
PerformanceUp to 1,000 MB/s
Warranty3-Years Limited
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When you buy a Seagate SSD, you get the value-added bonus of free software, enabling you to get the most out of your storage solution with easy-to-use tools such as Backup, Mirror, Sync Plus, Seagate Secure, and RGB and Status LED Management. Click HERE to download it.

Best Deals: Seagate Ultra Compact SSD 2TB
Today7 days ago30 days ago
-$384.99 CAD
£519.99£519.99
Check PriceCheck Price
* Prices last scanned 5/19/2026 at 12:40 pm CDT - prices may be inaccurate. As an Amazon Associate, we earn from qualifying purchases. We earn affiliate commission from any Newegg or PCCG sales.

Synthetic Benchmarks: CDM, ATTO & Blackmagic

CrystalDiskMark

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Sequential results here look great with more than 1GB/s for both reads and writes. 4K QD1 random reads look excellent as well.

ATTO

Seagate Ultra Compact SSD 2TB Review - A Pocket's Best Friend 10
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ATTO verifies our test subject as capable of delivering essentially full sequential throughput at 128K transfers at the standard test queue depth of 4. This is exactly what we are looking for from any SSD, internal or portable. Impressive.

Blackmagic

Seagate Ultra Compact SSD 2TB Review - A Pocket's Best Friend 13
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Is it suitable for use as a portable scratch disk for video? BlackMagic says it can get the job done. Outstanding.

Real-World Testing: PCMark 10, 3DMark SSD Gaming & Transfer Rates

PCMark 10 Data Drive Benchmark

The Data Drive Benchmark is designed to test drives that are used for storing files rather than applications. You can also use this test with NAS drives, USB sticks, memory cards, and other external storage devices.

The Data Drive Benchmark uses 3 traces, running 3 passes with each trace as follows:

  • Copying 339 JPEG files, 2.37 GB in total,?into?the target drive (write test).
  • Making a copy of the JPEG files (read-write test).
  • Copying the JPEG files to another drive (read test).
Seagate Ultra Compact SSD 2TB Review - A Pocket's Best Friend 16
Seagate Ultra Compact SSD 2TB Review - A Pocket's Best Friend 17

This test involves a good amount of random data and as such it can be overwhelming for many SSDs in our test subjects' class, but not for our 2TB Ultra Compact SSD. Impressive.

3DMark SSD Gaming Test

UL's newest 3DMark SSD Gaming Test is the most comprehensive SSD gaming test ever devised. We consider it superior to testing against games themselves because, as a trace, it is much more consistent than variations that will occur between runs on the actual game itself. This test is, in fact, the same as running the actual game, just without the inconsistencies inherent to application testing. In short, we believe that this is the world's best way to test an SSDs gaming prowess and accurately compare it against competing SSDs. The 3DMark SSD Gaming Test measures and scores the following:

  • Loading Battlefield V from launch to the main menu.
  • Loading Call of Duty Black Ops 4 from launch to the main menu.
  • Loading Overwatch from launch to the main menu.
  • Recording a 1080p gameplay video at 60 FPS with OBS (Open Broadcaster Software) while playing Overwatch.
  • Installing The Outer Worlds from the Epic Games Launcher.
  • Saving game progress in The Outer Worlds.
  • Copying the Steam folder for Counter-Strike Global Offensive from an external SSD to the system drive.
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Gaming is a performance metric that matters to most DIY consumers, especially to the enthusiast crowd that TweakTown caters to. We are now including gaming performance as a part of our external SSD reviews, as using portable storage for gaming duties is very popular among avid gamers. Ultra-portable, fully compatible storage is a nice complement to any console or PC gaming device.

Here again, this test can be overwhelming for ultra-compact SSDs, but again our test subject performs admirably.

DiskBench - Transfer Rates

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We brutalize our test subjects with our extremely hard-to-swallow 100GB data block. This data block is the same one we use for our internal SSD testing and comprises more than 62K files. 100GB is probably right at the upper limit for a single transfer, so as we see it, this is a much more realistic test scenario than a sustained filling of the entire drive.

Surprisingly robust results here for an ultra-pocket-friendly storage device, especially when programming data.

Final Thoughts

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It's fast, rugged, dustproof, water resistant, and supremely pocket-friendly, making it a must-have for everyday mass data on the go. Don't leave home without it; I don't. Editor's Choice.

Performance

90%

Quality

100%

Features

100%

Value

90%

Overall

95%

Our Verdict

For its size, there is nothing more rugged, capacious or portable than Seagate's Ultra Compact SSD.

TweakTown award
Best Deals: Seagate Ultra Compact SSD 2TB
Today7 days ago30 days ago
-$384.99 CAD
£519.99£519.99
Check PriceCheck Price
* Prices last scanned 5/19/2026 at 12:40 pm CDT - prices may be inaccurate. As an Amazon Associate, we earn from qualifying purchases. We earn affiliate commission from any Newegg or PCCG sales.

Senior Hardware Editor

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Jon joined TweakTown in 2013 and has since reviewed hundreds of SSDs, HDDs, and storage devices. Jon became a computer enthusiast when Windows XP launched. He was into water cooling and benching ATI video cards with modded drivers. Jon has been building computers for others for more than 20 years. Jon became a storage enthusiast the day he first booted an Intel X25-M G1 80GB SSD. Look for Jon to bring consumer SSD reviews into the spotlight.

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