
Gigastone SD Card 128GB
Score: 71/100
Lexar PLAY 512GB
Score: 71/100Rankings

The Gigastone 128 GB SDXC card offers a solid capacity and includes a convenient USB-C reader, backed by a 5-year data-recovery warranty. Its performance is limited by the lack of waterproofing and unspecified write speeds, making it less ideal for demanding 4K recording. Best suited for casual photographers needing extra storage and a handy reader.

The Lexar 512 GB PLAY microSDXC card offers high-capacity storage with fast read speeds up to 205 MB/s, making it ideal for gaming and 4K video on compatible devices. Its write speed is limited and the UHS-I interface caps performance on newer hardware. Best suited for casual gamers and smartphone users seeking large space without needing top-tier write speeds.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GB | 512 GBbest | |
100 MB/s | 205 MB/sbest | |
— | 140 MB/sbest | |
| ↓ lower better | 18 g | 9 gbest |
5 yearsbest | 5 yearsbest | |
| ↓ lower better | — | 1 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 128 GB | 512 GB |
Performance(3) | ||
Read Speed (MB/s) | 100 MB/s | 205 MB/s |
Speed Class | V30 | Class 10 |
Video Speed Class | U3 | V30 |
Design(2) | ||
Form Factor | SDXC | microSDXC |
Weight (g) | 18 g | 9 g |


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

Professional reviewers commend the Lexar PLAY 512 GB card for its solid read performance, V30/U3/A2 ratings, and suitability for gaming and 4K video on UHS-I devices, but they caution that the UHS-I interface and capped write speeds limit its appeal for power users seeking microSD Express performance.
Everyday users generally appreciate the high capacity and quick load times for games and media, while recurring concerns focus on the limited write speed, the lightweight feel of the packaging, and the absence of a protective case.

