Western Digital Purple 256GB
Score: 50/100
Western Digital Purple 512GB
Score: 82/100Rankings
The Western Digital Purple 512 GB microSDXC card is a surveillance-optimized solution offering high endurance, health monitoring and extreme-temperature durability, though its real-world write speeds fall short of advertised peaks.
The WD Purple SC QD101 256 GB microSDXC is an industrial-grade card built for 24/7 surveillance with high endurance and built-in health monitoring. It tolerates extreme temperatures and harsh environments but offers modest read/write speeds compared with newer U3 cards.
| Attribute | | |
|---|---|---|
256 GB | 512 GBbest | |
24 MB/s | 60 MB/sbest | |
24 MB/s | 60 MB/sbest | |
3 yearsbest | 3 yearsbest | |
| ↓ lower better | 5.67 g | 0.57 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Capacity (GB) | 256 GB | 512 GB |
Performance(3) | ||
UHS Speed Class | U1 | UHS-I |
Maximum Read Speed (MB/s) | 24 MB/s | 60 MB/s |
Maximum Write Speed (MB/s) | 24 MB/s | 60 MB/s |
Compatibility(1) | ||
Compatible Devices | Surveillance cameras with microSD slots; supports card health monitoring in compatible devices | Optimized for Surveillance (24/7) systems |
Physical(1) | ||
Weight (g) | 5.67 g | 0.57 g |
Products in the top-left offer the best value (high score, low price).
Professional reviewers highlight the WD Purple SC QD101 as a purpose-built, durable solution for surveillance systems, emphasizing its endurance, health monitoring, and suitability for AI-enabled edge cameras. They note its slower write speed relative to premium U3 cards but value reliability for constant-write workloads.
Everyday users consistently praise the card's reliability and durability in harsh environments, noting that it rarely fails even after months of nonstop recording. Complaints focus on the slower write speed and occasional incompatibility of the health-monitoring feature with certain camera brands, as well as its higher cost versus standard consumer cards.
Professional reviewers praise the WD Purple for its 96-layer 3D NAND, health-monitoring feature, and firmware tuned for sustained writes, positioning it as best-in-class for surveillance.
Everyday users rate the card highly, highlighting its durability, stability and seamless integration with popular camera systems, while noting slower-than-advertised write speeds and occasional formatting hiccups.
