Silicon Power 512GB
Score: 100/100
Patriot Memory EP Series 128GB 5-pack
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.
Patriot's EP 128 GB microSDXC card delivers U3/V30 and A1 ratings, making it capable of 4K video and app execution while retaining rugged protection and a 3-year warranty. Occasional reliability issues and lack of A2 classification keep it positioned as a budget-friendly, not premium, option.
| Attribute | | |
|---|---|---|
512 GBbest | 128 GB | |
170 MB/sbest | 100 MB/s | |
150 MB/sbest | 80 MB/s | |
5 yearsbest | 3 years | |
| ↓ lower better | 0.3 gbest | 0.3 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage & Capacity(1) | ||
Capacity (GB) | 512 GB | 128 GB |
Performance(3) | ||
Maximum Read Speed (MB/s) | 170 MB/s | 100 MB/s |
Maximum Write Speed (MB/s) | 150 MB/s | 80 MB/s |
Application Performance Class | A2 | A1 |
Warranty(1) | ||
Warranty Period (years) | 5 years | 3 years |
Products in the top-left offer the best value (high score, low price).
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.
“Works fine, no issues.”
“card became permanently write-protected after one week, resisting all formatting attempts, forcing disposal.”
Reviewers view the EP 128 GB as a solid budget choice with decent sequential speeds and 4K capability, though they note the absence of A2 performance and endurance rating compared to higher-priced rivals.
Users generally praise the smooth app performance and 4K support, but some report premature failures and permanent write-protection problems.
