
Kingston A400 240GB
Score: 47/100
SanDisk Extreme Portable SSD 1TB
Score: 84/100Rankings

The SanDisk Extreme Portable SSD delivers near-internal SSD speeds in a rugged, lightweight package with strong encryption and a generous warranty, making it ideal for mobile creators.

The Kingston A400 240 GB SSD is an entry-level SATA drive that dramatically speeds up older PCs at a low price, offering solid reliability and low power use. Its lack of DRAM and modest endurance make it unsuitable for demanding workloads.
| Attribute | ![]() | ![]() |
|---|---|---|
240 GB | 1,000 GBbest | |
500 MB/s | 1,050 MB/sbest | |
350 MB/s | 1,000 MB/sbest | |
80 TBWbest | — | |
3 years | 5 yearsbest | |
| ↓ lower better | 0.279 Wbest | — |
| ↓ lower better | 0.195 Wbest | — |
1,000,000 hoursbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(3) | ||
Sequential Read Speed (MB/s) | 500 MB/s | 1050 MB/s |
Sequential Write Speed (MB/s) | 350 MB/s | 1000 MB/s |
Interface | SATA III | USB-C 3.2 Gen 2 |
Storage(3) | ||
Capacity (GB) | 240 GB | 1000 GB |
Form Factor | 2.5 inch | Portable |
Warranty Period (years) | 3 years | 5 years |
Design & Build(2) | ||
Weight (g) | 41 g | 49.9 g |
Thickness (mm) | 7.0 mm | 9.7 mm |

Products in the top-left offer the best value (high score, low price).

Professional reviewers position the A400 as a solid, budget-friendly SSD that revitalises older PCs with noticeable speed gains, praising its plug-and-play ease and durability, but note its lack of DRAM cache and TLC-only NAND limit sustained performance, making it unsuitable for demanding or professional workloads.
Everyday users overwhelmingly appreciate the dramatic boot-time reduction and overall responsiveness, citing easy installation and reliable day-to-day operation, while common complaints revolve around occasional drive failures after a few years, slow RMA handling, and reduced write performance under heavy loads.

“Transfers my 50GB video projects in under a minute.”

“Survived a rainstorm during a shoot-still works perfectly.”

“Drive died after 60 minutes of use-replaced under warranty, but concerning.”




TechRadar, PCMag and other reviewers praise its speed, IP65 rating and durability, noting the carabiner loop and 5-year warranty as standout features.
Average rating around 4.5/5; users love the fast transfers and ruggedness but complain about occasional firmware issues and a temperamental adapter.