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SanDisk

SanDisk 512GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-512G-GN6MA

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Arrives Saturday, Jul 12
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Style: Card Only


Capacity: 512GB


Features

  • Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos (2); 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 (2) with UHS Speed Class 3 (U3) and video Speed Class 30 (V30) (5)
  • Rated A2 for faster loading and in app Performance (8). Compatible with microSDHC, microSDXC, microSDHC UHS-I, and microSDXC UHS-I supporting host devices
  • Built for and tested in harsh conditions: temperature Proof, Water Proof, shock Proof and x ray Proof(4)
  • Get the SanDisk Memory Zone app for Easy file management (available on Google Play) (3)
  • Order with Your Alexa Enabled device; Just asks 'Alexa, order SanDisk microSD'

Description

With the SanDisk Extreme 512GB (1) 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, itโ€™s A2-rated, so you can get fast application performance for an exceptional smartphone experience. (7) | Not all devices support microSD memory card formats. Check with your device manufacturer for more details. | For 128GB-1TB: 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-1TB: A2 performance is 4000 read IOPS, 2000 write IOPS. (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 SDXC, Micro SD, Micro SDHC


Memory Storage Capacity: 512 GB


Compatible Devices: Camera, Smartphone


Color: โ€ŽRed


Special Feature: โ€ŽX Ray Proof, Water Proof, Drop Proof, Temperature Proof


Read Speed: โ€Ž160 Megabytes Per Second


Item Weight: โ€Ž4.54 Grams


Write Speed: โ€Ž90 MB


Hardware Interface: โ€ŽmicroSDXC


Secure Digital Association Speed Class: โ€ŽClass 10


Product Dimensions: โ€Ž0.59"L x 0.43"W


Manufacturer: โ€ŽWestern Digital Technologies, Inc.


UPC: โ€Ž619659173760


Global Trade Identification Number: โ€Ž60


Memory Speed: โ€Ž160 Megabytes Per Second


Item model number: โ€Ž6.19659E+11


Item Weight: โ€Ž0.16 ounces


Item Dimensions LxWxH: โ€Ž0.04 x 0.59 x 0.43 inches


Language: โ€ŽEnglish, English, English, English


Is Discontinued By Manufacturer: โ€ŽNo


Date First Available: โ€ŽApril 15, 2019


Frequently asked questions

The SanDisk 512GB Extreme microSDXC can reach up to 160MB/s read speeds. However, actual speeds may depend on the device used or other factors.

Yes, this Extreme microSDXC memory card comes with an SD adapter for compatibility with SD-enabled devices.

Yes, this SanDisk card comes with U3 and V30 ratings, which make it suitable for recording and playing 4K UHD videos.

The A2 rating signifies that the card is optimized for app performance, enabling faster launch and better performance for mobile apps.

Similar Products

Top Amazon Reviews

๐Ÿš€ Abunda's Overview

This is our summary and key points to consider based on customer reviews.

The Sandisk Extreme micro SD card receives generally positive reviews, with users praising its function in the Steam Deck and car dashcam, where it performed flawlessly despite constant use. However, a few customers have expressed concerns about overheating during large file transfers, slower transfer speed than a USB 3.1 port with a thumb drive, and other functionality issues related to app running and simultaneous data transmission.

Pros

  • ๐Ÿ˜€ Great for expanding storage on devices like the Steam Deck
  • ๐Ÿ‘ Consistent performance in intensive uses like car dashcam
  • ๐Ÿš€ Speedy load times for games
  • ๐Ÿ” Flawless multiple video recording and rewriting

Cons

  • ๐Ÿ˜“ Tendency to overheat during large file transfers
  • ๐Ÿ’พ Slower transfer speed compared to a USB 3.1 port with a thumb drive
  • ๐Ÿ“ฒ Possible performance issues when reading and writing small files for multiple apps at the same time

Should I Buy It?

Despite some concerns, the Sandisk Extreme micro SD card has demonstrated good performance in all reviewed uses, from gaming to car dashcams. If you can make use of its high storage capacity and don't heavily depend on the swift transfer of large files, it's definitely worth considering.

    • Tiny Card, Massive Hero Energy
Style: Card Only Capacity: 256GB
This 256GB micro SD card may be the size of a fingernail, but donโ€™t let its tiny stature fool you โ€” itโ€™s the unsung MVP of my Insta360 X3 setup. It handles high-speed action footage like a champ, gobbling up 360-degree videos, time-lapses, and whatever gravity-defying stunts I throw at it without so much as a hiccup. The transfer speeds are so fast, I half expect it to send files into the cloud with a puff of smoke and a mic drop. Seriously, this little guy has turned my workflow from โ€œWait, why is this taking forever?โ€ to โ€œWow, already done?โ€ And letโ€™s talk storage โ€” 256 glorious gigabytes of it. Thatโ€™s enough to capture your entire skydiving trip AND your dramatic slow-mo hair flip when you land. I used to worry about running out of space mid-shoot, but now I can just slap this card in, hit record, and forget about it. Itโ€™s not just a memory card โ€” itโ€™s a freedom pass for content creators who live in fast-forward. ... show more
Reviewed in the United States on July 6, 2025 by Christopher
    • 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
    • Has not only the memory size but the speed I needed
Style: Card Only Capacity: 512GB
Great product. I discovered that it is not always the memory size but in some cases like my video doorbell, you need speed as well. Be sure to check speed requirement before you waste your money on a memory card. Not all are created equal. This card works awesome for my application.
Reviewed in the United States on July 8, 2025 by JB
    • Works
Style: Card Only Capacity: 64GB
Worked for my switch and gave the amount of gigs on label.
Reviewed in the United States on July 7, 2025 by TheTrueHero
    • Reliable
Style: Card Only Capacity: 512GB
Great memory storage for videos. Baseball and softball . Never fails Reliability: 100% reliable
Reviewed in the United States on July 5, 2025 by jlmj
    • I prefer Samsung but this was cheaper and A2 rated
Style: Card Only Capacity: 128GB
I haven't had good luck with Sandisk micro SD cards. I haven't had any failures but these are my two issues: 1. On large file transfers - more than 1gb - Sandisk tends to overheat and lose transfer speed. This is worse writing TO the card than reading from it. Transfer speeds are stil ok, but nothing like the speeds I get from my USB 3.1 port with a thumbdrive. Several years ago the problem was so severe my files got corrupted even when the on-board thermal protection was throttling my transfer speeds down to 5-10 megabytes per second. In the past two years data loss has ceased to be a problem, and the speed hit on large file transfers is much less severe, although Samsung continues to run faster, in real life big file transfers, than San Disk, at least for me. 2. I don't think Sandisk really meets the specs required for "extendable" or "unified" storage on Android, that or it throttles so early the perfomance on small, constant file reads and writes suffers more than it should. I almost always get an error message with their A1 cards on budget (Qualcom 42x chipset) phones complaining the storage is slow and hence not optimal as unified storage. I haven't gotten this error message with my two Fire HD 10 9th gen tablets on this latest A2 iteration, however, which may be a function of the chipsets and memory controller used in these tablets or maybe the upgrade from A1 to A2 makes a difference. I purchased two Fire HD 10's, 2020 editions/9th gen (the second one purchased on Prime Day for just $80, which is insanely cheap) and two of these A2 class Sandisk 128gb micro SD cards. A2 means the memory controller built into the micro SD card should be fast enough to run apps (not gaming apps!) from the card, not just read storage data. The real challenge is for app-rated (A1 or A2) card to handle data reads and writes for multiple apps at the same time. "Same time" is critical - it's not reading a single big file that creates problems for micro SD cards, it's reading small files at nearly the same time to handle the needs of multiple apps running at the same time. The way to avoid any performance issues is to NOT allow the operating system to "move" apps from true internal storage to the SD card. Only data. The first 128gb drive installed perfectly easily in my first Fire as "portable" or "removable" storage but that is not surprising. The second card was installed as "internal storage" in the second Fire glitched several times, crashing once, and not recognized by the tablet as storage at all. I don't know what I finally did to get past the glitches. but as far as I can tell what finally worked was first formatting it as "portable" storage first, rthen ebooting, then re-formatting it as "internal" storage. I was "offered" a chance to move some apps onto the SD card after formatting as internal storage. DO NOT do this - the 32gb of internal, faster storage is a much better place to run apps from, not the SD card even though it is A2 "app-friendly" classified. All CONTENT will automatically go to the SD card in the future, such as downloaded Netflix and Prime Videos. Pay attention to the following issues which might develop: 1. Simultaneously downloading videos or other content AND watching a previously stored video. This can tax the memory controller in the SD card since essentially the device is attempting to read your video and write your downloading episodes at the same time (subject to buffering). It shouldn't be a problem,but it might. I usually download content when I'm not using the tablet. 2. Moving lots of content from external storage - like a thumb drive - to internal storage. The process is ALWAYS a lot faster going from USB 3 thumbdrives to internal factory storage, and slower when writing to the SD card. In my review title I mentioned I prefer Samsung. Without doubt they make more dependable SD cards that more consistently "hit" their specs and don't throttle down as much on large file transfers. However, Sandisk pretty much "owns" the A1 and A2 "app friendly" micro SD space, and they frequently go on sale. Since they no longer "corrupt" large file transfers (I'm talking about moving a 30gb music collection to an SD card in a computer, not just a couple of gb), I no longer avoid Sandisk like the plague. Still, as they say, once burned twice wary. I'm hunting for reviews from Raspberry Pi users. Running an actual operating system from a micro SD card is equally hard, or harder, than running Android apps. So far, the micro SD cards recommend for those Raspberry Pi systems are NOT A1 or A2 class or even necessarily "faster" micro SD cards - apparently speed on larger files doesn't necessarily correlate to the speed required for smaller, constant file transfers that an operating system needs. It's good to see micro SD card prices become so low and commodity-like. I can remember when cards were a dollar a gigabyte, or much more. For under $20 I'm more than willing to give this Sandisk A2 128gb micro SD card a workout in my Fire HD 10 9th gen. I'm also a little surprised to see all the new brand names. I'm used more to Samsung and Sandisk at the top, with Kensington, Patriot, etc. as the next tier. My guess is Chinese subcontractor factories feel less bound to have a long-standing brand name and are just going direct to market. Time will tell how this works out for consumers. ... show more
Reviewed in the United States on October 18, 2020 by MDuck
    • Best value for money
Style: Card Only Capacity: 128GB
Really good, best value for money out there!
Reviewed in the United States on July 5, 2025 by Luis Norking Poueriet
    • Great speed and very efficient.
Style: Card Only Capacity: 512GB
Great quality. Fast speed.
Reviewed in the United States on July 7, 2025 by Amazon Customer

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