# Sony TOUGH SF-G Series UHS-II SD 128GB vs Delkin BLACK UHS-II SDXC V90 128GB: specs and price compared

A sourced, side-by-side comparison of the Sony TOUGH SF-G Series UHS-II SD 128GB (Sony) and Delkin BLACK UHS-II SDXC V90 128GB (Delkin Devices) among memory cards. Delkin BLACK UHS-II SDXC V90 128GB is the cheaper of the two at $149.99.

## Side by side

| Spec | Sony TOUGH SF-G Series UHS-II SD 128GB | Delkin BLACK UHS-II SDXC V90 128GB |
| --- | --- | --- |
| US price | $343 | $149.99 |
| Brand | Sony | Delkin Devices |
| Released | 2018 | 2021 |
| Format | sd | sd |
| Capacity (GB) | 128 | 128 |
| Speed class | v90 | v90 |
| Max read (Mbps) | 300 | 300 |
| Max write (Mbps) | 299 | 250 |
| Application class | — | — |
| Warranty | 5 years limited | limited lifetime |

## Key differences

- Max write (Mbps): Sony TOUGH SF-G Series UHS-II SD 128GB 299 vs Delkin BLACK UHS-II SDXC V90 128GB 250
- Warranty: Sony TOUGH SF-G Series UHS-II SD 128GB 5 years limited vs Delkin BLACK UHS-II SDXC V90 128GB limited lifetime

## What reviewers say

**Sony TOUGH SF-G Series UHS-II SD 128GB** — Only one outlet actually benchmarked the card. TechRadar's May 2025 SD card guide measured 251MB/s read and 246MB/s write and called them "very impressive", while praising the resin-moulded rugged build and flagging the price and the 128GB capacity ceiling. TechRadar does not state which capacity it tested (its spec box even lists the card type as SDHC, which cannot be right for 128GB), so the numbers are attributable to the SF-G TOUGH UHS-II line rather than verifiably to the 128GB trim. Engadget's 2018 launch piece is news, not a test: it confirms the durability claims and adds the missing write-protect switch and the $276 launch price for 128GB, but every speed figure in it comes from Sony. (2 sourced reviews.)

## Sources

- Sony TOUGH SF-G Series UHS-II SD 128GB: https://www.amazon.com/Sony-Performance-Blazing-SF-G128T-T1/dp/B07H9GDFRW (amazon.com, verified 2026-06-19)
- Delkin BLACK UHS-II SDXC V90 128GB: https://www.bhphotovideo.com/c/product/1773359-REG/delkin_devices_dsdbv90128bx_128gb_black_uhs_ii_sdxc.html (bhphotovideo.com, verified 2026-06-19)

Canonical: https://frontdeskreview.com/gear/memory-cards/sony-tough-sf-g-sd-128gb-vs-delkin-black-sd-128gb/
Cite: Per The Front Desk Review, Sony TOUGH SF-G Series UHS-II SD 128GB ($343) vs Delkin BLACK UHS-II SDXC V90 128GB ($149.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/memory-cards/sony-tough-sf-g-sd-128gb-vs-delkin-black-sd-128gb/
License: CC BY 4.0.