

🚀 Upgrade your storage game — speed, space, and durability in one sleek card!
The SanDisk 256GB Extreme microSDXC card delivers professional-grade performance with up to 190MB/s read and 130MB/s write speeds, powered by proprietary QuickFlow Technology. Designed for 4K and 5K UHD video recording, it features UHS Speed Class 3 (U3), Video Speed Class 30 (V30), and an A2 rating for accelerated app performance. Rugged and reliable, it’s temperature, water, and X-ray proof, making it the ultimate storage solution for smartphones, action cameras, drones, and more.










| ASIN | B09X7CRKRZ |
| Batteries | 1 AAAA batteries required. |
| Best Sellers Rank | #3 in Micro SD Memory Cards |
| Color | Gold/Red |
| Customer Reviews | 4.8 4.8 out of 5 stars (137,453) |
| Date First Available | June 14, 2022 |
| Global Trade Identification Number | 00619659188504 |
| Hardware Interface | microSDXC |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 0.04 x 0.59 x 0.43 inches |
| Item Weight | 0.353 ounces |
| Item model number | SDSQXAV-256G-GN6MA |
| Language | English, English, English, English |
| Manufacturer | Western Digital Technologies, Inc. |
| Product Dimensions | 0.4"L x 0.5"W |
| Read Speed | 190 Megabytes Per Second |
| Secure Digital Association Speed Class | Class 10 |
| Special Feature | Temperature Proof, Water Proof, X Ray Proof |
| UPC | 619659188504 |
| Warranty Type | Limited Lifetime |
| Write Speed | 130 MB per second |
S**O
Good card
Good SD card! Fits and functions perfect, plenty of storage for my dashcam. Pretty fast for what it is and excellent value.
L**E
Good value for a quality micro memory card
I bought this memory card for my Samsung tablet. It fits perfectly, and is recognized by the machine. As far as I can detect, it works perfectly. It was a very reasonable price for a quality chip. Because it is so small, the opening in the tablet was a little tricky to deal with, but installation was still easy. I would recommend this card for lots of extra memory.
M**V
Fast, reliable, and perfect for 4K recording 📸
I’ve been using this 1TB SanDisk Extreme microSD card with my Insta360 X5, DJI Osmo Nano, and my Sony ZV-E10 Mark II — and it works flawlessly. The speed is excellent, no delays or freezes, and it handles 4K footage without any issues at all. Even large, heavy files transfer super fast, which is really convenient. I’ve never had a single problem with this card 🙌🏼 No errors, no corrupted files — just stable, reliable performance every time. Great price for the quality. A solid, dependable option. Highly recommend 👍🏼
M**I
Small but mighty!
The SanDisk 1TB Extreme microSDXC UHS-I Memory Card with Adapter is a powerhouse of performance packed into an incredibly tiny form factor. I use it across multiple devices—my DJI Osmo Pocket 3, DJI Mini 3 drone, and even my older DSLR via the included adapter—and it performs flawlessly every single time. The read/write speeds are excellent, ensuring smooth 4K video recording and quick file transfers, which is essential for both professional and hobbyist creators. It’s impressive how such a small piece of tech can handle such large, high-resolution files without a hiccup. What really stands out is the card’s reliability and durability. Whether it’s been exposed to varying temperatures, inserted and removed countless times, or used across different camera systems, it has held up perfectly. SanDisk’s reputation for producing dependable storage devices is well-earned here. It’s also incredibly portable—you can carry a terabyte of data in something smaller than a fingernail, which still feels a bit like magic. I loved this memory card so much that I immediately bought a second one, and that’s honestly the highest praise I can give any tech product. It’s one of those purchases that just works, no fuss, no issues, and no second-guessing. If you’re serious about video recording, photography, or just need massive storage in a compact form, this is hands down one of the best investments you can make. A solid 5/5, great value for your money!
A**N
Perfect for modding!
Works perfectly!! Very happy for such a quality microsd at a reasonable price.
H**F
⭐⭐⭐⭐ Fast, Reliable, and High-Capacity
The SanDisk 256GB Extreme microSDXC performs very well, with fast read/write speeds that handle 4K and 5K video smoothly. The included adapter is handy, and the large 256GB capacity is great for cameras, drones, and other devices. My only drawback is that it’s a bit expensive compared to similar cards, but the quality and reliability make it worth considering. Overall, a high-performance and dependable microSD card, just slightly pricey.
W**E
Good option for a value priced Micro SD Card
Works excatly as expected and at a value that is excellent. I have a dash-cam and it makes it easier to change out the Micro SD card to view footage rather than leaving the slot empty while going through it. Easy to use and it works well.
T**S
Fast and reliable micro sd’s!
I bought these cards for my action cam and insta360, and it handled everything I threw at it. The transfer speeds are super fast, so moving videos and photos to my computer is way easier than with my old card, and it recorded 4K footage flawlessly even on longer shoots. Really reliable and high quality. Definitely recommend if you need a fast, solid microSD card!
P**S
Super zoveel opslag
J**O
Supersnel!
T**O
Acheté en deux exemplaires, très bonne carte SD, rapide et fiable. Utilisée dans un lecteur SanDisk USB 3.2 Gen 1, elle atteint en écriture soutenue 86–87 Mo/s, ce qui est parfaitement cohérent avec les 90 Mo/s annoncés. Aucun ralentissement, aucun problème de compatibilité. Utilisées pour des OS sur Raspberry Pi et Jetson Nano et pour stocker du flux webcam en direct. Aucun souci, très bon débit. Testée sur Linux avec dd en écriture (fichier de 500 MiB puis 5 GiB depuis /dev/urandom, conv=fdatasync), la carte atteint 86,8 Mo/s constants en écriture. Pas de buffer temporaire, pas de throttling : les débits sont stables sur toute la durée. Le contrôleur gère bien les gros fichiers. Les valeurs de lecture n’ont pas été testées ici, mais la promesse de 190 Mo/s sera de toute façon liée à des conditions optimales (QuickFlow™ activé + lecteur propriétaire SanDisk PRO). Pour une carte UHS-I V30, les performances sont quasiment maximales. Très bon choix pour un usage exigeant, y compris en 4K ou pour transfert de gros fichiers. [theo@lahaja ~]$ dd if=/dev/urandom of=/run/media/theo/76e2085e-462c-42e7-8ec9-91ecb8ebae21/home/alarm/testfile2 bs=4M count=125 conv=fdatasync 125+0 enregistrements lus 125+0 enregistrements écrits 524288000 octets (524 MB, 500 MiB) copiés, 6,08032 s, 86,2 MB/s [theo@lahaja ~]$ dd if=/dev/urandom of=/run/media/theo/76e2085e-462c-42e7-8ec9-91ecb8ebae21/home/alarm/testfile3 bs=4M count=1250 conv=fdatasync 1250+0 enregistrements lus 1250+0 enregistrements écrits 5242880000 octets (5,2 GB, 4,9 GiB) copiés, 60,3937 s, 86,8 MB/s
N**S
- Calidad/Precio: Si bien es cierto que bajo mi punto de vista, en gran parte el precio es debido a la marca, si observas las especificaciones estamos hablando de la gama alta, lo que hace al final que cómo resultado estés pagando por una calidad superior a un precio equitativo. - Aspecto: Compacta, viene con su adaptador SD y un código para descargar el RescuePro Deluxe, por si necesitas recuperar archivos en caso de emergencia. Todo bien presentado, como nos tiene acostumbrados SanDisk. - Satisfacción: 10/10. La tarjeta funciona rápido y sin errores, tanto en transferencia de archivos como en grabación continua de vídeo 4K. El rendimiento A2 también se nota al usarla con apps: todo va fluido y sin lags. ¿Lo recomiendo? Sí, sin ninguna duda, tengo claro que en caso de que deba realizar la compra de otra tarjeta Micro SD, esta es mi opción núm. 1. Estamos hablando de 1TB en una microSD, es una barbaridad, por mucho que te dediques a fotografiar o a grabar de forma extensa en altas resoluciones, tarda en llenarse está claro, eso genera muchísima libertad y comodidad a la hora de crear el contenido, en otras palabras: una tarjeta hecha para rendimiento profesional, en mi caso utilizada para la GoPro HERO Black 12, y tengo claro que podría traspasarla a la Sony ZV-1 en cualquier momento. El precio no es bajo, pero vale cada euro si necesitas espacio, velocidad y fiabilidad, esta tarjeta es una bestia. Ideal para creadores de contenido, fotógrafos, videógrafos o cualquiera que trabaje con archivos grandes.
K**A
Die microSDXC Speicherkarte von SanDisk ist super. Hohe Geschwindigkeit, zuverlässige Leistung und mit SD Adapter sehr flexibel nutzbar. Der Versand war zudem schnell und gut verpackt, insgesamt alles top.
Trustpilot
2 days ago
2 months ago