Gigastone Micro SD Card 256GB
Score: 85/100
Delkin CFexpress 512GB
Score: 89/100Rankings
The Delkin 512 GB POWER 4.0 CFexpress Type B card delivers industry-leading read/write speeds up to 3650 MB/s and 3240 MB/s, built for rugged field work. Its limited compatibility and higher cost compared to other CFexpress options are trade-offs. Best for professional photographers and videographers needing ultra-fast off-load and high-bit-rate 8K/6K/4K capture.
Gigastone's 256 GB microSDXC delivers fast up to 130 MB/s reads, rugged waterproof and shockproof construction, and broad device compatibility, all with a 5-year warranty. The UHS-I interface caps peak performance and speed claims can be inconsistent, so buyers should verify authenticity. Ideal for budget-conscious creators and gamers who need reliable 4K storage.
| Attribute | | |
|---|---|---|
256 GB | 512 GBbest | |
130 MB/s | 3,650 MB/sbest | |
85 MB/s | 3,240 MB/sbest | |
| ↓ lower better | 20 gbest | 22.68 g |
5 yearsbest | — | |
| ↓ lower better | — | 8.89 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 256 GB | 512 GB |
Performance(3) | ||
Read Speed (MB/s) | 130 MB/s | 3650 MB/s |
Write Speed (MB/s) | 85 MB/s | 3240 MB/s |
Interface | UHS‑I | PCIe 4.0 x2 |
Design(2) | ||
Form Factor | microSDXC | CFexpress Type B |
Weight (g) | 20 g | 22.68 g |
General(2) | ||
Warranty (years) | 5 years | lifetime years |
Compatibility | GoPro, Dash Cam, DJI, Drone, Security Camera, Nintendo Switch, smartphones, tablets, PCs, laptops, DSLRs, e-readers | CFexpress Type B only |
Products in the top-left offer the best value (high score, low price).
Professional reviewers commend the Gigastone 256 GB 4K Pro for its fast read speeds, solid V30/U3 rating, and rugged build, making it a capable choice for 4K video and gaming on a budget. However, they caution that the UHS-I interface limits peak performance, independent benchmarks are lacking, and there are documented counterfeit concerns, which together temper enthusiasm for demanding professional workflows.
Everyday users generally appreciate the card's ability to handle 4K video on devices like GoPro and Nintendo Switch, its quick transfer times, and the peace of mind offered by the free data recovery warranty. Recurring themes include satisfaction with durability and convenience of the included adapter, alongside worries about possible counterfeit units and occasional speed drops when the card fills up.
Professional reviewers commend the Delkin POWER 4.0 for its high sequential speeds, exceptional thermal management, and proven reliability with cinematic cameras. While its sustained write performance is strong, it falls short of the Black series' benchmark, and its incompatibility with older card formats is noted as a limitation for mixed-system users.
Everyday users highlight the card's ruggedness and ability to handle continuous high-bit-rate recording without slowdown, appreciating the rapid off-load speeds that streamline post-production.
