Crucial X8
Score: 79/100
Corsair EX400U 2TB
Score: 84/100Rankings
The Corsair EX400U 2TB delivers blazing USB4 performance up to 4,000 MB/s read and includes MagSafe compatibility in a tiny 64 mm square case. It lacks an IP rating and rugged drop protection, and carries a premium price. Perfect for professionals needing near-internal speeds on modern USB4 devices.
The Crucial X8 2TB portable SSD delivers up to 1050 MB/s sequential read and write speeds in a rugged aluminum unibody with IP67 protection. Its heavier weight and reliance on a USB 3.2 Gen 2x1 interface limit portability and maximum bandwidth. Ideal for creators and travelers needing durable high-speed storage.
| Attribute | | |
|---|---|---|
2,000 GBbest | 2,000 GBbest | |
1,050 MB/s | 4,000 MB/sbest | |
1,050 MB/s | 3,600 MB/sbest | |
| ↓ lower better | 100 g | 92 gbest |
3 yearsbest | 3 yearsbest | |
2.3 mbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Connectivity(2) | ||
Interface | USB 3.2 Gen 2x1 | USB4 Type‑C |
OS Compatibility | PC, Mac | Windows, macOS, iOS/iPadOS |
Build & Design(3) | ||
Weight (g) | 100 g | 92 g |
Dimensions (L×W×H) (mm) | 110×53×11.5 mm mm | 64.3×64×12 mm mm |
Enclosure Material | Aluminum | Aluminum top, plastic sides and bottom |
Accessories(1) | ||
Included Accessories | USB‑C to USB‑A adapter; USB‑C to USB‑C adapter | 30 cm USB‑C to USB‑C cable (40 Gbps, 60 W PD), 7 cm USB‑C cable with 90° connector |
Performance(2) | ||
Sequential Read Speed (MB/s) | 1050 MB/s | 4000 MB/s |
Sequential Write Speed (MB/s) | 1050 MB/s | 3600 MB/s |
Products in the top-left offer the best value (high score, low price).
Professional reviewers consistently commend the X8 for its industry-leading 1050 MB/s sequential speeds, low latency benchmarks, and robust aluminum construction that passes 7.5-foot drop tests. The SSD-Tester.com score of 1083 underscores its strong performance, while reviewers also note the limitation imposed by the USB 3.2 Gen 2x1 interface and a slightly bulkier, heavier form factor compared with the X6.
Everyday users echo the professional praise, emphasizing the noticeable speed boost for games, media, and backups, as well as the ruggedness that survives travel and drops. The included adapters are frequently mentioned as a convenience, and no significant negative feedback has surfaced beyond minor concerns about weight and the need for compatible ports.
Professional reviewers praise the EX400U for its tiny footprint, blazing USB4 performance, and hassle-free plug-and-play experience. The inclusion of a full-length 40 Gbps cable and the ability to operate without a separate power brick were highlighted as strong points, while the drive's speed is consistently described as comparable to internal SSDs.
“higher quality SSD”
