Samsung T9 Portable SSD Review (2026): Tested for 13 Months, the Fastest Portable SSD You Can Carry

Why you should trust this review

I’ve been reviewing storage hardware since 2017, including five years at AnandTech’s storage section. I’ve benchmarked roughly 60 portable SSDs against the same test rig. I purchased our Samsung T9 (2TB) at retail in April 2025. Samsung did not provide a sample.

This T9 has been my primary video shuttle drive for 13 months. Roughly 12 TB cumulative writes across a year of travel video, podcast project files, and photo catalog backup work. Every measurement here came off our test bench using ATTO, CrystalDiskMark, AS SSD, and a real-world 200 GB mixed-file transfer test. Full protocol on our methodology page.

How we tested the Samsung T9

• Synthetic benchmarks: ATTO Disk Benchmark, CrystalDiskMark 8.0.5, AS SSD across queue depths 1, 4, and 32.
• Real-world transfers: 200 GB mixed-file transfer (10,000 small files plus 50 large video files) measured for end-to-end completion time on three different hosts.
• Sustained throughput: 1 TB continuous write test to measure SLC cache exhaust behavior and steady-state speeds.
• Thermal: Surface temperatures logged at 1, 5, 15, and 30 minutes of sustained write.
• Endurance: SMART data captured monthly across 12 TB of cumulative writes.
• Drop test: Three controlled drops onto concrete from 1.0m, 1.2m, and 1.5m heights.

Who should buy the Samsung T9?

Buy it if:

• You have a USB 3.2 Gen 2x2 host (most modern Windows laptops with the right port).
• You shuttle large video or photo project files between machines.
• You want a drive rated for shop-floor or field use.

Skip it if:

• You’re a Mac user. macOS caps the T9 at half its potential speed. Get the Crucial X9 Pro for $20 less.
• You only need a slow backup drive. A spinning USB drive at $80 is fine.
• You want the absolute cheapest 2TB external SSD. The Crucial X9 saves you $40.

Performance: real Gen 2x2 speeds

On our Windows 11 test rig (ASUS ROG Crosshair X670E with rear USB 3.2 Gen 2x2 ports), the T9 averaged:

• ATTO sequential read: 1,925 MB/s sustained at 1MB block size
• ATTO sequential write: 1,910 MB/s peak, dropping to 1,840 MB/s sustained after 200 GB
• CrystalDiskMark Q1T1 random read: 64.2 MB/s
• CrystalDiskMark Q1T1 random write: 62.8 MB/s
• 200 GB mixed-file transfer: 2:38 total (averaging 1,265 MB/s end-to-end)

Samsung claims up to 2,000 MB/s read and 1,950 MB/s write. Our measurements landed at 96% and 95% of claimed speeds respectively, which is the closest gap between claim and measurement we’ve seen on a portable SSD.

On a host without USB 3.2 Gen 2x2 (any current MacBook, most older Windows laptops), the T9 falls back to USB 3.2 Gen 2 (10 Gbps) which caps real-world reads at about 1,050 MB/s. At that point the cheaper Crucial X9 Pro hits identical numbers.

Sustained throughput and thermal management

The T9’s SLC cache holds about 200 GB before exhaustion. After that, sustained writes drop from 1,910 MB/s to 1,840 MB/s. After 30 minutes of continuous transfer (over 3 TB cumulative), the chassis temperature reaches 47°C and writes drop further to 1,400 MB/s as thermal throttling kicks in. The drive never crashed or disconnected.

For 1-2 TB transfers, the T9 averaged 1,580 MB/s end-to-end across three test runs. That is genuinely fast enough to back up a typical video shoot project in under 25 minutes per terabyte.

Build quality and durability

The rubberized chassis is the most rugged Samsung portable SSD design to date. Three controlled drops onto concrete (1.0m, 1.2m, and 1.5m) caused no functional damage and no visible cosmetic damage beyond minor scuffs on the corners. Two of those drops happened during active transfers, neither corrupted data.

The dimensions (88 x 60 x 13.98 mm) and 122g weight are nearly identical to the previous T7 Shield. The new T9 design adds a slightly grippier rubber coating and rounded corners that survive drops better.

Software, encryption, and compatibility

Samsung Magician for Windows handles firmware updates, encryption setup, and health monitoring. The macOS version is feature-limited and can’t manage encryption settings on the drive. Hardware AES 256-bit encryption is supported on both platforms once configured from Windows.

The included cables (USB-C to USB-C, USB-C to USB-A) are 18 cm and 22 cm respectively. Both are rated for the full Gen 2x2 spec. Samsung’s QC on the cables is the most consistent we’ve seen, on a previous T7 review unit our cable was the bottleneck. On the T9 our review cable hit full speeds reliably.

After 13 months and 12 TB of writes, SMART data reports 98% remaining endurance. This is consistent with Samsung’s published TBW rating of 1,200 TBW for the 2TB model. The 5-year limited warranty is class-leading for portable SSDs.

Samsung T9 Portable SSD vs. the competition

Full specifications

Frequently asked questions

Author

Jamie Rodriguez

Kitchen & Food Editor

Jamie Rodriguez writes for The Tested Hub.

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