
Kingston 4GB microSDHC
Score: 21/100
Silicon Power 128GB microSDXC
Score: 82/100Rankings

Silicon Power's 128 GB microSDXC card offers near-premium UHS-I performance with up to 100 MB/s read and 80 MB/s write, rugged durability, and A2 app support, making it a budget-friendly choice for 4K video, gaming, and mobile storage. The inclusion of an SD adapter adds versatility, though some variants have slower write speeds and occasional quality control issues.

A budget-friendly 4 GB microSDHC card offering basic Class 4 performance, ideal for older phones and simple cameras but limited by low capacity and speed.
| Attribute | ![]() | ![]() |
|---|---|---|
4 GB | 128 GBbest | |
4 MB/s | 100 MB/sbest | |
4 MB/s | 80 MB/sbest | |
— | 5 yearsbest | |
| ↓ lower better | 2.7 gbest | 9 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage & Capacity(2) | ||
Capacity (GB) | 4 GB | 128 GB |
Card Type | microSDHC | microSDXC |
Performance(2) | ||
Maximum Read Speed (MB/s) | 4 MB/s | 100 MB/s |
Maximum Write Speed (MB/s) | 4 MB/s | 80 MB/s |
Physical(1) | ||
Weight (g) | 2.7 g | 9 g |

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

Reviewers praise its affordability and reliability for legacy devices, while warning that its speed and capacity are insufficient for modern HD video or high-performance applications.
Users like the low price and adapter convenience, but many note slow write speeds and limited usable space.

“Works perfectly in my old Android phone - no issues with apps or music.”

“Great value for the price - reliable and fast enough for photos.”

“Too slow for recording video - stutters on my tablet.”




Professional reviewers position the Silicon Power 128GB as a cost-effective challenger that delivers near-premium performance. The Superior Pro UHS-I version is praised for its 80 MB/s write speed, making it suitable for 4K video on drones and action cams, while the A2 variant is highlighted for its superior app performance on Android and Nintendo Switch devices.
Everyday users consistently rate the card 4.5+ stars, lauding its fast load times on the Nintendo Switch, rugged build that survives rain and heat, and reliable 4K video capture without dropped frames. The most common complaints revolve around occasional mislabeled units, slower-than-advertised write speeds on some devices, and rare premature failures.