In the era of high-resolution photography and 4K video, a reliable and fast memory card is no longer a luxury—it’s a necessity. Whether you’re a professional photographer capturing rapid-fire shots, a videographer recording cinematic footage, or a gamer expanding your console’s library, the right 256GB SD card ensures your data is transferred quickly and stored securely. The wrong choice can lead to frustrating lag, dropped frames, and missed moments.
Navigating the specifications like UHS-I, V30, A2, and read/write speeds can be daunting. This roundup simplifies your decision by comparing ten of the best 256GB SD and microSD cards on the market. We’ve analyzed performance benchmarks, compatibility, and key features to help you find the perfect card for your high-speed transfer needs, ensuring your device performs at its peak.
Our Top Picks for 256GB SD Cards
- SanDisk 256GB Extreme microSDXC UHS-I Memory Card
- SanDisk 256GB Ultra SDXC UHS-I Memory Card
- Amazon Basics Micro SDXC Memory Card with Adapter
- Samsung EVO Select microSD Card + Adapter, 256GB
- SanDisk 256GB Extreme SDXC UHS-I Memory Card
- SanDisk 256GB Extreme PRO SDXC UHS-II Memory Card
- PNY 256GB Premier-X Class 10 U3 V30 microSDXC 2-Pack
- PNY 256GB Elite-X Class 10 U3 V30 SDXC Flash Memory Card
- Kingston Canvas React Plus 256GB SD Card
- SanDisk 256GB Extreme PRO SDXC UHS-I Memory Card
SanDisk 256GB Extreme microSDXC UHS-I Memory Card
This microSD card is a performance powerhouse, designed for demanding use in action cameras, drones, and the Nintendo Switch. With incredible read speeds of up to 190MB/s powered by SanDisk QuickFlow Technology, it significantly reduces the time spent transferring files to your computer. Its robust feature set, including U3, V30, and A2 ratings, guarantees smooth 4K and 5K video recording and faster app loading on compatible mobile devices.
For users who need maximum performance, pairing this card with the SanDisk Professional PRO-READER is recommended to achieve the advertised top speeds. It’s a reliable choice for content creators and tech enthusiasts who require both high capacity and exceptional transfer rates for their mobile and compact devices.
SanDisk 256GB Ultra SDXC UHS-I Memory Card
Offering an excellent balance of performance and value, the SanDisk Ultra SDXC is a fantastic choice for everyday use. It delivers quick read speeds of up to 150MB/s, making it ideal for point-and-shoot cameras and general storage needs. This card handles Full HD video with ease and provides ample space for thousands of photos and videos.
Its U1 speed class is perfectly suited for continuous video recording and standard photography. If you need a dependable, high-capacity card for a compact camera, a laptop, or other electronics without the need for pro-level video specs, the SanDisk Ultra provides reliable performance at an accessible price point.
Amazon Basics Micro SDXC Memory Card with Adapter
This Amazon Basics card delivers solid, no-frills performance for a wide array of devices. With read speeds up to 100MB/s and write speeds up to 90MB/s, it capably handles high-resolution photos and Full HD/4K video recording. The included full-size adapter increases its versatility, allowing you to use it in cameras, laptops, and other devices with standard SD card slots.
Its A2 application performance class is a significant benefit for smartphone users, enabling faster app launches and smoother operation when running applications directly from the card. For budget-conscious consumers seeking reliable storage for smartphones, tablets, or action cameras, this card represents a compelling value.
Samsung EVO Select microSD Card + Adapter, 256GB
The Samsung EVO Select is a versatile and high-performance microSD card perfect for mobile devices and gaming. It boasts read and write speeds of up to 160MB/s, ensuring fast file transfers and smooth operation. This card is designed to handle 4K UHD video and is an excellent choice for expanding storage on Android smartphones, tablets, and the original Nintendo Switch.
With its included adapter, you can easily transfer files between your phone, camera, and computer. The A2 rating further enhances its utility for mobile applications, making it a well-rounded option for users who need speed and compatibility across multiple devices.
SanDisk 256GB Extreme SDXC UHS-I Memory Card
This full-size SD card from SanDisk’s Extreme lineup is built for photographers and videographers. It features rapid read speeds up to 180MB/s and impressive write speeds up to 130MB/s, minimizing the buffer clearing time so you can keep shooting. The V30 rating ensures it can sustain the data rates required for high-quality 4K UHD video recording.
Leveraging SanDisk QuickFlow Technology, it offers fast file offloading, which is a major time-saver when working with large quantities of high-resolution images or video footage. It’s a professional-grade card that delivers reliable performance in demanding conditions.
SanDisk 256GB Extreme PRO SDXC UHS-II Memory Card
Targeting prosumers and professionals, this UHS-II card is in a league of its own. It supports demanding video formats, including 6K and 4K UHD, with a V60 rating that guarantees a minimum sustained write speed of 60MB/s. With write speeds up to 150MB/s, it is engineered for continuous burst mode photography and high-frame-rate time-lapses.
The UHS-II interface provides a significant performance boost over UHS-I cards, making it essential for photographers and videographers using high-end MILC and cinema cameras. If your work requires the absolute best in speed and reliability for capturing high-bitrate video, this card is a top contender.
PNY 256GB Premier-X Class 10 U3 V30 microSDXC 2-Pack
This two-pack from PNY offers excellent value for users who need multiple high-performance microSD cards. With read speeds up to 100MB/s and a V30 rating, these cards are capable of handling 4K Ultra HD videography and burst-mode HD photography. The A1 performance class also allows for smoother operation of apps directly from the card on your smartphone or tablet.
It’s an ideal solution for owners of action cameras, drones, or surveillance systems who want a reliable spare or need to manage footage across multiple devices. Getting two quality cards in one package makes this a practical and economical choice.
PNY 256GB Elite-X Class 10 U3 V30 SDXC Flash Memory Card
The PNY Elite-X is a dependable full-size SD card designed for photography and videography enthusiasts. It offers read speeds up to 100MB/s and meets the U3 and V30 speed class requirements, making it suitable for recording 4K Ultra HD video and capturing high-resolution photos in burst mode.
This card provides a solid performance foundation for DSLR and mirrorless camera users who need a reliable card for their creative projects without the premium cost of professional-tier options. It’s a workhorse card that balances performance with affordability.
Kingston Canvas React Plus 256GB SD Card
Engineered for professional content creators, the Kingston Canvas React Plus is a UHS-II card with exceptional speeds. It boasts staggering read speeds up to 300MB/s and write speeds up to 260MB/s. Its V90 rating is the highest available, ensuring flawless performance when capturing 4K, 6K, and even 8K video.
This card is built to handle the most demanding workflows, allowing for rapid-fire shooting without frame drops and quick file transfers that save valuable time in post-production. For professionals working with high-end camera systems, this card offers the top-tier performance required for critical projects.
SanDisk 256GB Extreme PRO SDXC UHS-I Memory Card
As a staple in the professional photography community, the SanDisk Extreme PRO UHS-I card delivers robust performance for serious amateurs and pros alike. It is designed for fast shooting and quick file transfer, making it suitable for capturing action shots and high-resolution panoramas.
This card typically features high read and write speeds that support advanced photography and videography needs. It offers the reliability and durability that SanDisk is known for, making it a trusted choice for storing your valuable work in various shooting conditions.
Buying Guide: How to Choose a 256GB SD Card for High-Speed Transfer
When I’m picking out a 256GB SD card, especially for things like 4K video or rapid-fire photography, I don’t just grab the first one I see. The labels can be a bit of a puzzle, but once you know what to look for, it becomes a lot simpler. My main focus is always on speed and reliability, because a slow card can mean dropped frames and a frustrating workflow.
The first thing I check for is the speed class. You’ll see a bunch of symbols, but the most important ones for high-speed transfer are the UHS Speed Class and Video Speed Class. Look for a ‘U3’ symbol, which guarantees a minimum write speed of 30MB/s. For even more demanding tasks, like 8K video, you’ll want a V60 or V90 rating. These numbers are a direct promise of performance, so I never settle for anything less than U3 for my serious projects.
Next up is the bus interface, which is the connection between the card and your device. You’ll see Roman numerals like I or II. UHS-I is common and can be plenty fast, but for the absolute maximum speed potential, I look for UHS-II cards. You can spot a UHS-II card by the second row of pins on the back. Just make sure your camera or card reader supports it, otherwise you won’t get the full benefit.
Application Performance Class is another spec I pay close attention to, especially if I’m using the card in a smartphone, drone, or gaming device like a Nintendo Switch. Look for an ‘A2’ rating. This means the card is optimized to handle lots of small files quickly, which makes a huge difference in app load times and saving game data. It makes the overall experience feel much snappier.
Of course, brand reputation and warranty matter a great deal. I stick with well-known manufacturers who have a proven track record. A card from a reputable brand might cost a few dollars more, but it comes with peace of mind and a good warranty, often 5 to 10 years. My data is too important to trust to a no-name card that might fail without warning. Reading user reviews about real-world performance and reliability is always the final step in my process before I buy any 256GB SD card for high-speed transfer.
Frequently Asked Questions
What’s the real-world difference between a UHS-I and UHS-II 256GB SD card?
The difference is all about maximum potential speed. A UHS-I card has a theoretical max bus speed of 104MB/s, while UHS-II jumps up to 312MB/s. In practice, this means transferring hundreds of high-resolution photos or a long 4K video file from the card to your computer will be significantly faster with UHS-II. However, to get that speed, both your camera and your card reader must have the extra row of pins to support UHS-II. If they don’t, the card will just operate at UHS-I speeds.
Can I use a high-speed 256GB SD card in any device?
For the most part, yes, thanks to backward compatibility. A modern, high-speed SD card will physically fit into any device with an SD slot. The device will recognize it and you’ll be able to store data. The catch is that you might not get the full high-speed performance if the device has an older, slower reader inside. It’ll work, but it’ll be limited to the device’s maximum speed. It’s always a good idea to check your device’s manual for its recommended card specifications.
Is the “Application Performance Class” (A1/A2) important for photography?
It can be, especially if you use your camera’s burst mode frequently. The A1 and A2 ratings are about random read/write speeds—how fast the card can access many small files at once. When you’re shooting in rapid succession, the camera is writing a stream of individual image files. An A2-rated card is better at handling this workload, which can help prevent the camera’s buffer from filling up too quickly, allowing you to shoot longer bursts without waiting.
How do I know if my device can take full advantage of a high-speed 256GB SD card?
The best way is to check the official specifications for your camera, drone, or other device. Look in the user manual or on the manufacturer’s website for details on supported SD card types. They will usually list the maximum supported bus interface (e.g., UHS-I) and sometimes even recommend a specific speed class. If you see support for UHS-II or recommendations for V60/V90 cards, you’ll know your device is built to handle the fastest 256GB SD cards for high-speed transfer available.
Why do two 256GB SD cards from different brands with the same speed class have different prices?
This usually comes down to build quality, consistency, and brand reputation. A more expensive card often uses higher-grade memory chips and a more robust controller, which can lead to more consistent sustained write speeds and better durability. It also typically comes with a longer and more reliable warranty and customer support. You’re often paying for the assurance that the card will perform as advertised under heavy use and that the company will stand behind it if it fails.