Sony Tough G Series 256GB
Score: 92/100
Delkin CFexpress 512GB
Score: 89/100Rankings
The Sony SF-G TOUGH 256 GB UHS-II SDXC card delivers industry-leading 300 MB/s read and 299 MB/s write speeds with V90 video class and IP68 ruggedness. Its drawbacks are the lack of a write-protect switch, premium price, and dependence on UHS-II hosts for maximum performance. Ideal for professional videographers and photographers needing ultra-fast, durable storage for 8K video and harsh field conditions.
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.
| Attribute | | |
|---|---|---|
256 GB | 512 GBbest | |
300 MB/s | 3,650 MB/sbest | |
299 MB/s | 3,240 MB/sbest | |
| ↓ lower better | 2 gbest | 22.68 g |
5 yearsbest | — | |
| ↓ lower better | 2.1 mmbest | 8.89 mm |
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) | 300 MB/s | 3650 MB/s |
Write Speed (MB/s) | 299 MB/s | 3240 MB/s |
Interface | UHS-II | PCIe 4.0 x2 |
Design(3) | ||
Form Factor | SDXC | CFexpress Type B |
Weight (g) | 2 g | 22.68 g |
Thickness (mm) | 2.1 mm | 8.89 mm |
General(2) | ||
Warranty (years) | 5 years | lifetime years |
Compatibility | UHS-II compatible devices, fallback UHS-I up to 95 MB/s | CFexpress Type B only |
Products in the top-left offer the best value (high score, low price).
Professional reviewers consistently commend the SF-G TOUGH for its industry-leading read/write speeds and rugged construction, noting that the V90 class and IP68 rating make it a reliable choice for 8K video, high-speed burst photography, and harsh field conditions.
The SF-G TOUGH is praised for its ultra-fast performance and rugged durability, though users note the lack of a write-protect switch and higher cost as trade-offs.
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.
