The best micro SD cards are a worthwhile investment for securely storing your photos and videos. Our evaluation criteria focused on storage capacity and read/write speeds. We also looked into the length of the warranty and its durability under extreme temperatures.
After more than 30 hours of research and 15 hours of testing, our best micro SD card pick goes to the SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card. It offers the highest storage capacity and read speeds, transferring up to 1000 photos per minute and delivering quick video recording and playback.
The SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card also carries a Class 10 rating, which refers to a write speed of 10 MB/s. This makes it ideal for heavier applications such as burst photo shooting and 4K filming. Extra bonus points for its 10-year limited manufacturer warranty, with most picks on this list offering 3 and 5-year warranties.
This memory card also has a dedicated smartphone app, SanDisk Memory Zone, to help find and transfer files from all of your storage devices and locations, with extra features to search media by timeline or geo-tag.
Like the SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card, the Samsung 128GB 100MB/s (U3) MicroSDXC EVO Select Memory Card is also a rugged workhorse, beating extreme conditions with an IEC 60529 and IPX7 waterproof rating and operating in temperatures as low as -25 degrees Fahrenheit. Shorter bursts of activity in the blistering Arizona desert or bone-chilling Alaska plains should not affect its data recovery. You may also want to learn about the best usb flash drive for another storage option.
Points are deducted from the Silicon Power 64GB 3D NAND High-Speed MicroSD Card for its average 5-year limited warranty, far from Sandisk’s and Samsung’s 10-year limited warranty which protects against data loss under normal usage conditions. However, 5 years should be more than enough for non-intensive users.
The Micro Center 64GB Class 10 Micro SDXC Flash Memory Card also tests its mettle in temperatures as high as 185 degrees Fahrenheit, so snapping and storing shots in Death Valley’s blistering terrain should be no trouble. Its even airport x-ray proof to keep safe, a must for frequent travelers running through security like a marathon.
This card also comes with a 5-year limited warranty with a guaranteed replacement. Although its a notch below Sandisk’s and Samsung’s 10-year limited warranty, it should meet the demands of the type of consumer using it.
This card also carries 32 GB of storage (and their 5 included in the pack), the absolute minimum for extra storage for your child’s Nintendo Switch or other MicroSD-compatible gaming devices. If you have an extensive photo or music collection, the Patriot should offer more than enough.
Divers, surfers, and water buffs will also enjoy its IEC/EN 60529 IPX7 certification, withstanding up to 30 minutes in 1-meter-deep waters. This makes it an excellent choice for tropical and rainy climates where a little condensation would not hurt.
With tons of acronyms, numbered ratings, and options, choosing a MicroSD card for your needs could be difficult. Our evaluation looked into storage capacity, read/write speeds, durability, and length of warranty. We did not include microSD cards under 32GB of storage and read/write speeds of less than 10MB/s , since these specs can not easily process high-resolution photos, saving in RAW format, enable burst shooting modes or other intensive activities.