Western Digital Purple 512GB
Score: 82/100
Silicon Power 512GB
Score: 100/100Rankings
A 512 GB microSDXC U3/V30/A2 card delivering up to 170 MB/s read and 150 MB/s write, rugged durability and high-endurance options, suited for 4K video, Android apps and demanding outdoor use.
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.
| Attribute | | |
|---|---|---|
512 GBbest | 512 GBbest | |
60 MB/s | 170 MB/sbest | |
60 MB/s | 150 MB/sbest | |
3 years | 5 yearsbest | |
| ↓ lower better | 0.57 g | 0.3 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(3) | ||
UHS Speed Class | UHS-I | U3 |
Maximum Read Speed (MB/s) | 60 MB/s | 170 MB/s |
Maximum Write Speed (MB/s) | 60 MB/s | 150 MB/s |
Warranty(1) | ||
Warranty Period (years) | 3 years | 5 years |
Physical(1) | ||
Weight (g) | 0.57 g | 0.3 g |
Products in the top-left offer the best value (high score, low price).
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.
Professional reviewers consider Silicon Power's 512 GB U3 cards reliable mid-tier options that deliver solid 4K video performance and useful A2 app acceleration, highlighting durability, endurance features and a long warranty as key strengths, while noting they don't match the top speeds of SanDisk or Samsung.
Everyday users praise the cards for consistent 4K recording, good durability and the long warranty, especially noting the High Endurance model's reliability in dashcams, but also mention occasional speed variability, confusing model labels and incompatibility with the upcoming Switch 2.
