SanDisk Extreme microSDXC UHS-I Memory Card Review

Our Summary and Conclusion

Alright, at this point you’ve seen that SanDisk’s performance claims for their Extreme series microSDXC cards are the real deal. In both real-world situations and in synthetic benchmarks, the 64GB SanDisk Extreme microSDXC card we tested had no problem exceeding the speeds presented in SanDisk’s specifications, usually by about 10% - 15%. Keep in mind, however, you’ll need a device or card reader capable of the higher transfer speeds. And old USB 1.0 reader ain’t gonna cut it.

They’re not exactly cheap, but the SanDisk’s Extreme microSDXC cards are worth the extra scratch if you’re in need of a high-performance memory card. As of today, you can find the SanDisk Extreme micoSDHC / microSDXC cards on-line at the following price points:

At this prices, you can find similar capacity cards for roughly half the amount, but they won’t perform nearly as well. The Class 10 and UHS-I specifications call for a minimum transfer speed of only 10MB/s. With over 80MB/s and 50MB/s reads and writes, respectively, these SanDisk Extreme cards obviously exceed the minimum spec. Cheaper cards do as well—it’s common to find 64GB cards that offer 50MB/s reads and 10MB/s writes—but they don’t come close to what the SanDisk Extreme cards can do.

  • Great Performance
  • Lifetime Warranty
  • Kinda Pricey

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