Tech & Gadgets · Head-to-head
Samsung T9 Portable SSD vs Lexar Professional SL500
Which should you buy? Our verdict on both, pulled from our full The Best Portable SSDs: Fast, Rugged, and Which One to Skip comparison.
The Samsung T9 is the best all-around portable SSD: it hits real 20Gbps speeds, holds them under sustained load, and has a clean reliability record. The Lexar SL500 is the value runner-up, matching most of that speed in a slimmer metal body for less.
Samsung T9 Portable SSD
Buy itThe fastest mainstream 20Gbps drive that also holds its speed under load.
- Sustained ~2,000 MB/s reads with Dynamic Thermal Guard limiting throttling
- Rubberized grip shell rated for drops up to around 3m
- Needs a USB 3.2 Gen 2x2 host to hit rated speed
- Bulkier than slim aluminum rivals
Lexar Professional SL500
Buy itA slim, credit-card-size 20Gbps drive that delivers near-T9 speed for less money.
- Rated ~2,000/1,800 MB/s over USB 3.2 Gen 2x2 in a 43g, 7.8mm aluminum body
- Credit-card-size, 4.8mm-thick aluminum body and Apple ProRes capture support for phone-first shooters
- Passive cooling can throttle on very long continuous writes
- Only reaches rated speed on a 20Gbps host
Side by side
The 6 criteria below are the ones our full comparison judged every product on, narrowed to these two.
| Samsung T9 Portable SSD Our pick | Lexar Professional SL500 | |
|---|---|---|
| Our verdict | Buy | Buy |
| Best for | Creators and pros who want the fastest widely compatible drive without gambling on firmware. | Value-minded creators who want flagship 20Gbps speed in a pocketable, phone-friendly design. |
| Price tier | $$$ · premium | $$ · mid-range |
| Interface & rated speed | USB 3.2 Gen 2x2 (20Gbps), ~2,000 MB/s | USB 3.2 Gen 2x2 (20Gbps), ~2,000/1,800 MB/s |
| Sustained write behavior | Holds up well; Dynamic Thermal Guard | Strong, but passive cooling can throttle on long writes |
| Durability | Rubberized shell, drop ~3m, no IP rating | Aluminum body, IP54, drop ~2m |
| Encryption & software | 256-bit AES + Samsung Magician | 256-bit AES (DataShield) |
| Warranty | 5-year | 5-year |
| Track record | Clean, widely trusted | Newer but stable |
Which one is right for you?
Pick the Samsung T9 Portable SSD if
creators and pros who want the fastest widely compatible drive without gambling on firmware.
Know before buying: needs a USB 3.2 Gen 2x2 host to hit rated speed.
Pick the Lexar Professional SL500 if
value-minded creators who want flagship 20Gbps speed in a pocketable, phone-friendly design.
Know before buying: passive cooling can throttle on very long continuous writes.
The bottom line
Our overall pick is the Samsung T9 Portable SSD - The fastest mainstream 20Gbps drive that also holds its speed under load. Choose the Lexar Professional SL500 instead if value-minded creators who want flagship 20Gbps speed in a pocketable, phone-friendly design.
Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Portable SSDs: Fast, Rugged, and Which One to Skip.