Sony SDXC 128GB UHS-II SF-M Tough R277/W150 MB/s

Sony SDXC 128GB UHS-II SF-M Tough R277/W150 MB/s | Clear speed and capacity at a glance

Choosing a memory card gets frustrating when the capacity and speed figures don’t tell you what you’re buying. This Sony SDXC card puts both in its name: it has 128GB of storage, with a stated read speed of 277 MB/s and write speed of 150 MB/s. It’s an option to consider when those numbers, along with the SDXC and UHS-II designations, match the requirements of your setup. The model name is SF-M Tough. I’d pay particular attention to the separate read and write figures when comparing cards: they describe different parts of moving data, and the higher number isn’t the write speed. The listing gives you a useful set of concrete details for narrowing a choice, without needing to guess at the card’s capacity or quoted speeds.

Choosing by format and speed

Start with the format and bus designation your intended device calls for. This card is labelled SDXC and UHS-II; those are the details to compare with the requirements for the equipment you plan to use it with. If you’re weighing several cards, keep read and write speeds separate in your comparison. Read speed is the figure associated with getting data from the card, while write speed is the figure associated with putting data onto it. For this Sony, the title gives each as a separate MB/s rating, so you can compare like with like rather than treating one speed as though it covers both directions. Capacity is another straightforward part of the decision: 128GB is the stated amount of storage. The SF-M Tough name identifies this particular Sony model; it doesn’t add a different capacity or speed figure to the ones already given. Use those details to judge whether this card fits the format, capacity and speed requirements you have in mind.

Technical Specifications

• Brand: Sony
• Format: SDXC
• Capacity: 128GB
• Bus interface: UHS-II
• Model: SF-M Tough
• Read speed: 277 MB/s
• Write speed: 150 MB/s