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SP Silicon Power

Silicon Power 256GB Micro SD Card U3 SDXC Up to 100MB/s High Speed Memory Card with Adapter for Nintendo-Switch, Cams and Drones

  • Based on 10,121 reviews
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$28.97 Why this price?
New Year Deal · 17% off was $34.97

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Capacity: 256 GB


Style: microSD UHS-I


Features

  • UHS Speed Class 3 (U3) and Video Speed Class 30 (V30)
  • High compatibility for different types of devices including smartphones, tablets, Drones, Android Tablets, Tablet PCs, Action Cameras, DSLR and 4K or Full HD camcorder.
  • Compatible with Nintendo Switch In order to use a microSDXC card on the Nintendo Switch console, a system update is required. See Nintendo official site for more details
  • 5-year limited manufacturer warranty

Brand: SP Silicon Power


Model Name: NOT compatible with Switch2


Flash Memory Type: Micro SDXC


Memory Storage Capacity: 256 GB


Compatible Devices: Dash Cam, Drone, Smartphone, Sport Camera


Color: 256GB


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


Read Speed: 100 Megabytes Per Second


Warranty Type: Limited


Write Speed: 20 MB per second


Hardware Interface: microSDXC


Secure Digital Association Speed Class: Class 10


Manufacturer: SP Silicon Power


UPC: 886576049632 886576045672


Global Trade Identification Number: 72


Product Dimensions: 5 x 3.4 x 0.16 inches


Item Weight: 0.317 ounces


Item model number: SU256GBSTXDU3V20AC


Date First Available: June 7, 2019


Frequently asked questions

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  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Silicon Power Just works
Capacity: 256 GB Style: microSD UHS-I
Easy to use and Great quality, The adapter is a nice feature. Great capacity and formats in the format you need. Great write speeds. Functions as it should. Great Value as well.
Reviewed in the United States on October 23, 2025 by Rich Hardman
    • Small But Mighty
Capacity: 256 GB Style: microSD UHS-I
I just received the Silicon Power 256GB Micro SD Card U3 SDXC, and it’s been fantastic right out of the box! I’m using it with my GoPro camera and drone, and it performs flawlessly with fast read/write speeds up to 100MB/s. The card has been super reliable so far, handling large files and quick saves without any issues. The included adapter is a nice bonus for easy transfers. For the price, this card is an absolute steal—great storage capacity and performance for the cost. I’d definitely buy it again and highly recommend it to anyone needing a dependable, high-speed micro SD card! ... show more
Reviewed in the United States on August 3, 2025 by Max's Movie Mayhem
    • Perfect Memory
Capacity: 256 GB Style: microSD UHS-I
I had previously used the 128GB micro sdcard from SP, actually from the same line (the purple one). It worked perfectly fine in my Nintendo Switch but I thought to myself after downloading a couple digital copy of games that a bump up would be better. So after a couple months I bought this 256GB card after my great experience with the 128 card. SP has simply continued to prove to me they make quality storage mediums. Not only did my Nintendo Switch of course gladly accept the card and show the larger amount of space but the read/write speeds have even improved which is always a plus. If you have a Switch then I highly recommend this brand as not only are they quality cards but also they are very affordable. These of course would be perfect to use in a multitude of devices that require extra storage. As for space on these, I always would mention in detail as a learning tip to other customers about how to never expect full space to be available. This card being stated at 256GB will never have 256GB available to the user and that goes for all manufacturers and memory mediums such as USB sticks and HDD/SSD. I usually go into deeper explanation but simply its due to a difference in measurement scale used (manufactures use 1:1 measurements so 256GB to them is 25,600MB of data or 1,000MB = 1GB. When the scale that techs know is 1,024MB = 1GB). And you also always have a chunk of data locked away for its allocated boot sector and internal tools needed to keep its memory working the longest for you. That's the gist of it so keep that in mind and know you're still getting a very decent upgrade on space. ... show more
Reviewed in the United States on April 9, 2023 by Justin Edgell
    • good for original switch, surface device and Samsung galaxy phones and tablets
Capacity: 512 GB Style: microSD UHS-I
Well, if you are looking for micro SD cards for your original Nintendo Switch, Samsung Galaxy device, or Surface device, this is for you. It work very well on these large storage can keep precious memories of photos
Reviewed in the United States on November 27, 2025 by Kesean
    • Decent Card For Standard Use
Capacity: 512 GB Style: microSD UHS-I
The memory card has so far held up to many cycles of reading and writing without an issue and has been helpful in storing large files due to it's great capacity for the price. It's speed is less impressive though, but should be fine for most people. Performance: Works like your average micro SD card. However I noticed if you're planning to use it in video cameras, dashcams, or anything that requires high speed writing on the spot, the card might start to fall behind after a few cycles and throw "SD card too slow" errors. Durability: Thankfully haven't had any issues with corruption, so in terms of durability it seems to be fine. The build quality of the card is really good too so it won't break as easily. Would recommend this to gamers who needs a large card to pair with their devices, or for people who needs a small and convenient way to temporarily store data on the go. Would still recommend a more permeant solution for data storage long term though, but this card does seem reliable enough as a hub for all your data that needs to be transferred. ... show more
Reviewed in the United States on November 28, 2024 by Oliver B
    • DO NOT BUY! WASTE OF MONEY! LOSE YOUR DATA!
Capacity: 512 GB Style: microSD UHS-I
PURE TRASH! I got to use it one time. It took several attempts to get it to identify and be recognized in one device (phone) and one try in another. So not very universal. I transferred a file system backup to it. Moved it to the second phone that it was most compatible with and had it there for about 6 hours before the chip disappeared. Wiping out all my data becoming incompatible with any device complete trash! Unrecoverable data. The device cannot be identified in any type of reader or electronic device it's trash! And my backup data that I put on it is now lost and it was my only copy once I have transferred it I deleted it from my other source. So I have nothing but hard feelings against this manufacturers piece of trash device. Obviously I'm choosing kind words to say! So truth being, it is NOT easy to install. The size compatibility is becoming more common. I can't tell you about data transfer rates as I only got two store data on here once and it was kind of slow. But again I would not recommend this device for anything. You put data on one of these to save it not lose it! You buy one of these for compatibility and you don't get that with this! We'll see what the manufacturer has to say about their piece of trash that I wasted my money on. ... show more
Reviewed in the United States on May 17, 2025 by California-Nick
    • great sd card
Capacity: 256 GB Style: microSD UHS-I
great sd card, that transfers my games fast. the sd card is in my steam deck and its very easy to use. its a large size which is great to store all of my games on my steam deck, and it was very cheap too
Reviewed in the United States on November 23, 2025 by yaseen
    • Gotta look for the price drop
Capacity: 256 GB Style: microSD UHS-I
Works amazing, using it in my android for extra space for camera and PDFs what else can you ask for in price when I bought it
Reviewed in the United States on December 4, 2025 by Rosemary Cormier

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