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SanDisk

SanDisk 256GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-256G-GN6MA

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Nov 3
Order within 6 hours and 32 minutes
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Style: Card Only


Capacity: 256GB


Features

  • Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos; Requires compatible devices capable of reaching such speeds
  • Up to 90MB/s write speeds for fast shooting; Requires compatible devices capable of reaching such speeds
  • 4K UHD and Full HD Ready with UHS speed class 3 (U3) and video speed class 30 (V30)
  • Rated A2 for faster loading and in app performance
  • Built for and tested in harsh conditions: Temperature Proof, Water Proof, shock Proof and x ray Proof
  • Get the SanDisk memory zone app for easy file management (available on Google Play)
  • Order with your Alexa enabled device; Just ask 'Alexa, order SanDisk microSD'

Description

With the SanDisk Extreme 256GB microSD UHS-I Memory Card get extreme speeds for fast transfer, app performance, and 4K UHD video. (2) Ideal for your Android smartphone, action cameras or drones, this high-performance microSD card handles 4K UHD video recording, Full HD video and high-resolution photos. The super-fast SanDisk Extreme microSDXC memory card reads up to 160MB/s and writes up to 90MB/s. Plus, it’s A2-rated, so you can get fast application performance for an exceptional smartphone experience. Not all devices support microSD memory card formats. Check with your device manufacturer for more details. For 128GB-400GB: Up to 160MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Up to 90MB/s write speeds. 1MB=1,000,000 bytes. (1) 1GB=1,000,000,000 bytes. Actual user storage less. (2) Compatible device required. Full HD (1920x1080) and 4K UHD (3840 x 2160) support may vary based upon host device, file attributes and other factors. (3) Download and installation required. (4) Card only. See SanDisk website for additional information and limitations. (5) UHS Speed Class 3 (U3) designates a performance option designed to support real-time video recording with UHS- enabled host devices. Video speed class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS-enabled host devices. (6) Registration required; terms and conditions apply. (7) For 64GB-400GB: A2 performance is 4000 read IOPS, 2000 write IOPS. Results may vary based on host device, app type and other factors. (8) Read only; Based on internal testing. Results may vary based on host device, file attributions and other factors.

Brand: SanDisk


Model Name: Extreme


Flash Memory Type: Micro SD, Micro SDXC


Memory Storage Capacity: 256 GB


Compatible Devices: Camera, Smartphone


Color: ‎Brown, Red


Special Feature: ‎Drop Proof, Temperature Proof, Water Proof, X Ray Proof


Read Speed: ‎160 Megabytes Per Second


Item Weight: ‎0.01 Pounds


Warranty Type: ‎Lifetime


Write Speed: ‎90 mbs


Hardware Interface: ‎microSDXC


Product Dimensions: ‎0.04"L x 0.59"W


Manufacturer: ‎Western Digital Technologies Inc.


UPC: ‎619659169732


Global Trade Identification Number: ‎32


RAM: ‎256 GB


Item model number: ‎SDSQXA1-256G-GN6MA


Item Weight: ‎0.16 ounces


Item Dimensions LxWxH: ‎0.04 x 0.59 x 0.43 inches


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎July 13, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • SanDisk Workflow
Style: Card Only Capacity: 128GB
The SanDisk 128GB Extreme microSDXC is perfect for photographers, videographers, and content creators who need fast, reliable storage. With speeds up to 160MB/s, it handles 4K video, burst photos, and high-resolution content without lag. I love that it comes with an adapter, so you can easily use it in cameras, laptops, or other devices. It’s durable, reliable, and ideal for anyone who needs to store large files and access them quickly. If you want a memory card that keeps up with professional workflows and ensures you never miss a shot, this SanDisk Extreme card is a solid choice ... show more
Reviewed in the United States on September 30, 2025 by Crystal R Durham
    • Works fast with Steam Deck
Style: Card Only Capacity: 512GB
Got the 512 GB model to expand on the Steam Deck's admittedly limited storage. Even if you got the largest storage model of the Deck (512 GB) it can fill up quickly. Games are just bigger nowadays. I think the newest Call of Duty is like 150 gigs. Just like every storage manufacturer, they advertise the storage in "GB" instead of "GiB", so when you actually plug it into a computer you lose some space in the conversion. In this case, after you format it on the Steam Deck (ext4 I believe) you end up with 468.2 GB of usable space. Which admittedly is a tiny bit bigger than the Deck's own 465.3 GB of usable space on the 512 model. It seems like every storage mfr. has their own way of making this GB/GiB calculation, and it's just plain annoying how they always favor giving you less storage than it says on the label. It's so common now it's pretty much standard practice with them, so what can you do. But losing 9% of your storage space is never fun, so it's always worth complaining about again. The largest game I have loaded on this card is Horizon Zero Dawn Complete Edition, which is 73.48 GB. And the stories are true, it loads pretty much just as fast as the Steam Deck's own SSD. The game's intro comes with a few somewhat lengthy cutscenes, and game developers have gotten pretty good at hiding the loading screens in the background now, but still there was absolutely no wait at all between gameplay sections. In fact, I have another older game "Destroy All Humans!" (2005) on the Deck's SSD that has more hard loading screens, and it just "feels" like it takes longer to launch and load new levels than Horizon Zero Dawn on the micro SD card. HZD had a few times where it would stutter during the intro cutscenes, and drop to 20 FPS very momentarily, but for some reason this seemed to clear up after about 30 mins in, and otherwise ran at around 35-45 FPS. Definitely watchable. Gameplay was much smoother, had absolutely no stutters, and ran really consistently at around 40 FPS. Definitely playable. And not all of that may be down to the card. I'm not sure if Horizon Zero Dawn uses pre-rendered cutscenes or not (basically a video file), but it might explain the odd stuttering that only happened during cutscenes, and not during gameplay. However you would think streaming even a 4k video file should be easy, stutter-less task for this card. Another reason could be Steam's own weird download behavior: if you want to download multiple games at the same time to load your new card up, each time you click "Install" on a new game, Steam will interrupt whatever download it was currently working on and immediately start downloading the game you just clicked on, putting whatever it was downloading before into a queue. As far as I know, there's no way to just add games directly to the queue, to have them each download 1-at-a-time uninterrupted. If there is that option I haven't found it yet. (You would think this would be the default behavior anyway.) This means when I clicked on 8 different games to start downloading at the same time, each time I clicked on the next one it would pause the current download at around 1% complete, and only pick it back up again once the last one I clicked on completed. This causes pretty bad fragmentation in your game data, with the first 1% of 8 different games stored at the beginning of the card. But it could explain the rare stuttering in the intro cutscenes that somehow miraculously cleared up after a little while. Solid-state storage is supposed to have much better random IOPS read performance than HDDs, but no matter what when you've got fragmented data you're going to get slower speeds than continuous reads. FYI, you can transfer games between 2 different micro SD cards directly on the Deck. I was using a temporary 64 GB card while waiting until this one arrived, and my Windows computer couldn't read the ext4 or whatever filesystem Deck uses, and I didn't want to mess around with new drivers to get that to work. But with a few USB-C to USB-A adapters and micro SD card reader, it's easy to do on the Deck itself. It won't show up on the Deck's Storage menu of the main interface, so you have to hold the power button down and switch to Desktop mode, where you can use the standard file browser to copy things over. Keep this in mind before you start troubleshooting your wonky series of daisy-chained adapters/card readers because you think they aren't working. And make sure you format the new card first. Another FYI: I had a little scare thinking I bricked my Deck or something when I first installed this card. I made sure to completely shut down the Deck before swapping SD cards, but I think that confused the bootloader. When I turned it back on the Deck had a completely blank, black screen, and Steam didn't load. It turned out the boot order somehow got switched, and it was trying to find the Steam OS on the new microSD card instead of the Deck's SSD. To fix this is easy, while it's off hold 'Volume Down' and click the Power Button - when you hear the chime, let go of the Volume Down button, and you'll be booted into the Boot Manager. There you can fix the boot order, and I haven't had it happen again since. Just search "steam deck recovery" online for more info, Valve has great instructions. ... show more
Reviewed in the United States on September 9, 2022 by Snake Eater
    • One of the Best of Its Kind!
Style: Card Only Capacity: 1TB
This is one of the fastest traditional MicroSD cards on the market if not THE fastest and performs great at a lot of tasks. I use this in my Asus ROG Ally X(the updated one that doesn't cook MicroSDs) and it is more than enough for emulation up to PS3 as well as older PC games. This is a great way to expand my Ally X's storage without needing an even more expensive SSD than I've already put in it. That it's removable makes it infinitely useful for transferring material from my main PC. I cannot speak for its speed for other uses, however it is the fastest MicroSD card I've ever owned by far. Pretty expensive for the capacity and speed but there is literally almost nothing better for this specific application. Good stuff! ... show more
Reviewed in the United States on April 11, 2025 by Jeffery Jelinski
    • Works great!!
Style: Card Only Capacity: 64GB
Great price, works great, what more could you ask for. Came with the micro sd card, the micro to standard sd adapter, and a small protective case.
Reviewed in the United States on September 18, 2025 by RedTimmy
    • Capable of keeping up with my GoPro 11 Black 4k Video
Style: Card Only Capacity: 128GB
Kept up with my GoPro camera with no drops or issues. 4K at 30Hz. Cinematic setting.
Reviewed in the United States on October 15, 2025 by Victor
    • S d card review
Style: Card Only Capacity: 128GB
I always love a good s d card.And this is a wonderful one works cameras, phone computer everywhere, that you need a micro sd card highly recommend
Reviewed in the United States on September 18, 2025 by Don's Widow
    • Test results - Amazon basic 256 vs SanDisk Extreme 256 (with earlier cell phone usage review)
Style: Card Only Capacity: 128GB
Review Image by John E John E
Review Image by John E John E
Review Image by John E John E
Review Image by John E John E
I am reviewing and comparing two different memory cards, the Amazon basics 256gb and the SanDisk Extreme 256gb card. First is price, the Amazon basics is a several dollars less than the SanDisk (at this moment 23.72 vs 36.99). Currently Amazon says there is a newer version of the SanDisk for 24.85, however I have not purchased or tested the newer version. The two cards: "SanDisk 256GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-256G-GN6MA" "Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 256 GB" Tested using: CrystalDiskMark 5.5.0 x64. Computer is a 4-year-old "NUC8i7HVK" running Windows 10, and it has a built in SD card reader (Intel calls it "SDXC with UHS-I support"). This interface is what I call "SD reader" in the accompanying screen captures. I also tested using a SanDisk USB 3 adapter "SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN". This interface is what I call USB3 in the accompanying screen captures. First, I noticed a UK review where the reviewer noted the Amazon basics card seems to be missing 5 gigabytes of storage even when the (confusing) translation from computer storage gigabytes (1024 x 1024 x 1024 = 1,073,741,824 bytes vs 1000 x 1000 x 1000 = 1,000,000,000 bytes) vs "we sell storage" gigabytes. You will notice CrystalDiskMark reports the Amazon basic card as 233GiB versus the 238GiB of the SanDisk, so he is very correct. I have no clue why the discrepancy, but it is slightly smaller than it should be. Second, to get the real read/write speed of the SanDisk card, you will notice I had to use the SanDisk USB 3 adapter. Using the built in SD card reader, both cards were very close to identical results. Using the SanDisk USB 3 adapter, I did manage to exceed the ratings for the SanDisk card (up to 160 MB/s read, and up to 90 MB/s write) giving 169 read and 105 write. The Amazon basic card did have a slight change using the SanDisk adapter, but really not significant. Both cards were close enough to their claimed specs to not worry about it, however it should be noted that you need the SanDisk adapter to actually get the much higher speeds of the SanDisk. I will be using the Amazon basic card to store children's movies for my granddaughter to play on her new Kindle, it is plenty fast enough reading to do full HD movies. Note that both cards were brand new when tested and had never had anything written or read from them prior to the test. The Amazon basic seems a good value and is certainly adequate for normal use in a cell phone or laptop. The SanDisk would really shine if you used the adapter to move lots of larger files to it. Older review: I've now purchased this card 3 times from Amazon (as seller) and I'm very satisfied. Used in Moto g7 and Moto g7 power phones with excellent results! Mine was sold by Amazon, and certainly is a fast card. Installed in a Moto G7, tested at 89 read, 59 write using A1 SD benchmark for android. Maybe not the rated speed, but Motorola phones have a history of bad SD compatibility. Tested others, and this card is significantly faster. Very happy with the product. Note that I've attached some results testing on a PC with a Lexmark reader, thus it doesn't attain its full speed. ... show more
Reviewed in the United States on May 12, 2019 by John E John E

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