
Silicon Power 128GB Micro SD Card
Score: 77/100
SanDisk Extreme PRO 128GB
Score: 84/100Rankings

The SanDisk Extreme PRO 128 GB SDXC offers top-tier read performance and rugged durability, making it ideal for 4K UHD shooting and burst photography. Its write speed is modest for sustained high-bitrate video and it carries a premium price. Best suited for professionals needing reliability and fast off-loads without UHS-II support.

Silicon Power's 128 GB microSDXC delivers solid read/write speeds and A1 app performance, packaged in a waterproof, dust-resistant design with a generous 5-year warranty. Its lack of shockproof rating and limited sustained write speed may restrict demanding 4K workflows. Suitable for mobile creators and drone users who value durability and app speed over top-tier sequential performance.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GBbest | 128 GBbest | |
100 MB/s | 200 MB/sbest | |
80 MB/s | 90 MB/sbest | |
| ↓ lower better | 9.07 g | 2 gbest |
5 yearsbest | — | |
| ↓ lower better | 2.54 mm | 2.3 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(3) | ||
Read Speed (MB/s) | 100 MB/s | 200 MB/s |
Write Speed (MB/s) | 80 MB/s | 90 MB/s |
Speed Class | C10 | Class 10 |
Design(3) | ||
Form Factor | microSDXC | SDXC |
Weight (g) | 9.07 g | 2.0 g |
Thickness (mm) | 2.54 mm | 2.3 mm |
Power & Environment(1) | ||
Operating Temperature (°C) | -40 to 85 °C | -25 to 85 °C |
General(1) | ||
Warranty (years) | 5 years | lifetime years |

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

Professional reviewers note that the card adheres to industry-standard V30 and A1 specifications, delivering read speeds that are competitive for its class and ensuring reliable performance for 4K video capture, though the lack of independent testing leaves some performance claims unverified.
Everyday users rate the card highly, praising its reliable storage for mobile gaming, video recording, and device expansion, while the absence of detailed user complaints suggests general satisfaction.

“perfect for 4K shooting and burst mode”

“elevating creativity”

“stunning high-resolution, stutter-free 4K UHD video”




Professional reviewers from B&H Photo, CDW, and Best Buy commend the Extreme PRO 128GB for its industry-leading 200 MB/s read speed, U3/V30 class compliance, and rugged construction, positioning it as the top UHS-I choice for creators who need fast off-loads and durability.
Consumers consistently praise the card's rapid transfer speeds and dependable performance in harsh environments, rating it highly for 4K video and burst photography.