Kingston 4GB microSDHC
Score: 21/100
SanDisk Ultra 128GB SDXC
Score: 87/100Rankings
The SanDisk Ultra 128 GB SDXC card offers fast read performance, A1 app capability, and a robust, water- and shock-resistant design, backed by a 10-year warranty. Its U1/V10 rating and modest write speeds keep it in the budget tier, making it unsuitable for 4K or high-bitrate video work.
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 | 63 MB/sbest | |
— | 10 yearsbest | |
| ↓ lower better | 2.7 gbest | 8 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 | SDXC |
Performance(3) | ||
Maximum Read Speed (MB/s) | 4 MB/s | 100 MB/s |
Maximum Write Speed (MB/s) | 4 MB/s | 63 MB/s |
Speed Class | Class 4 | C10 |
Physical(1) | ||
Weight (g) | 2.7 g | 8 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 praise the Ultra 128 GB for its reliable read performance, solid random I/O that exceeds the A1 specification, and overall value, but caution that its U1/V10 write class makes it unsuitable for 4K or high-bitrate video work.
Everyday users consistently highlight fast photo transfers, smooth app performance on Android devices, and the sturdy SD adapter, while noting slower write speeds, occasional incompatibility with dashcams or drones, and rare corruption when the card is not ejected properly.
