
Crucial X6 1TB
Score: 34/100
WD P40 Game Drive 1TB
Score: 65/100Rankings

The WD_BLACK P40 1TB Game Drive delivers flagship-class 2,000 MB/s speeds and a rugged aluminum design with RGB flair, targeting gamers and creators who need fast transfers, but it can overheat and lacks encryption.

The Crucial X6 1TB is an affordable, ultra-light portable SSD with decent everyday performance, but its QLC NAND and DRAM-less architecture prevent it from delivering the high sustained speeds some users expect.
| Attribute | ![]() | ![]() |
|---|---|---|
1,000 GB | 1,024 GBbest | |
540 MB/s | 2,000 MB/sbest | |
212 MB/s | 2,000 MB/sbest | |
| ↓ lower better | 40 gbest | 78.5 g |
36 months | 60 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Capacity(1) | ||
Storage Capacity (GB) | 1000 GB | 1024 GB |
Performance(3) | ||
Interface | USB 3.2 Gen 2 | USB 3.2 Gen 2x2 |
Sequential Read Speed (MB/s) | 540 MB/s | 2000 MB/s |
Sequential Write Speed (MB/s) | 212 MB/s | 2000 MB/s |
Build & Design(1) | ||
Weight (g) | 40 g | 78.5 g |
Warranty(1) | ||
Warranty Period (months) | 36 months | 60 months |
Power & Connectivity(1) | ||
Power Source | bus-powered | Bus-powered |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Android, iOS, consoles | Windows, macOS, Linux |
Technical Specs(2) | ||
NAND Type | QLC | TLC 3D NAND |
Controller | Silicon Motion SM2259XT | WD SN560E |


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

Professional reviewers consider the X6 a serviceable, budget-friendly portable SSD that works well for everyday tasks but is hampered by its SATA-based internals and DRAM-less design, recommending PCIe-based alternatives for power users.
Consumers appreciate the X6's reliability, pocket-size convenience, and price, though many note that real-world speeds fall short of the advertised 800 MB/s and that performance drops after the cache is exhausted.

Professional reviewers praise the P40 for its near-flagship sequential speeds, solid aluminum construction, and superior random write performance, while noting thermal throttling and the lack of hardware encryption.
Everyday users love the lightning-fast transfers, rugged feel, and eye-catching RGB, often highlighting how quickly large game libraries move and the drive survives drops, but recurring complaints focus on heat buildup and Windows-only RGB control.
“smaller than car keys”

“perfect for travel”

“Crucial SSDs have never failed me.”


