Silicon Power 256GB
Score: 61/100
Western Digital Purple 256GB
Score: 50/100Rankings
A 256 GB microSDXC U3/V30 card with A1 app performance, 100 MB/s read and 80 MB/s write, rugged build and a full-size adapter, positioned as a cost-effective option for 4K30 video and Android storage expansion.
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 GBbest | 256 GBbest | |
100 MB/sbest | 24 MB/s | |
80 MB/sbest | 24 MB/s | |
1 years | 3 yearsbest | |
| ↓ lower better | 0.3 gbest | 5.67 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(3) | ||
UHS Speed Class | U3 | U1 |
Maximum Read Speed (MB/s) | 100 MB/s | 24 MB/s |
Maximum Write Speed (MB/s) | 80 MB/s | 24 MB/s |
Compatibility(1) | ||
Compatible Devices | Nintendo Switch, smartphones, tablets, drones, action cameras, DSLR, mirrorless cameras, 4K/Full HD camcorders | Surveillance cameras with microSD slots; supports card health monitoring in compatible devices |
Warranty(1) | ||
Warranty Period (years) | 1 years | 3 years |
Physical(1) | ||
Weight (g) | 0.3 g | 5.67 g |
Products in the top-left offer the best value (high score, low price).
Professional reviewers note that the Silicon Power card offers dependable performance for everyday creators, matching the core specs of more expensive brands while delivering superior durability and a generous warranty, but its lack of A2 class performance and limited write speed for high-bitrate 4K60 or 8K workflows make it less suitable for professional video production.
Everyday users praise the card's fast transfer rates, rugged build and excellent price-to-capacity ratio, especially for travel, drones and Android app storage, while recurring complaints focus on occasional speed drops, lower-than-advertised write speeds on some units, and incompatibility with the upcoming Switch 2.
“Fast transfer speeds-great for Steam Deck and Android phones.”
“Perfect for DJI Osmo Pocket 3-handles 4K smoothly.”
“Durable and reliable during hiking and travel.”
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.
