Samsung EVO Plus 512GB MicroSD Card Review: Speedy Device Storage

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Samsung EVO Plus 512GB MicroSD - Benchmarks And Verdict

The ATTO Disk Benchmark is an easy-to-run test that samples transfer speeds across a specific volume length. It measures read and write transfer rates and presents the results in a handy chart. We chose .5kb through 8192kb transfer sizes and a queue depth of 6 over a total max volume length of 256MB. ATTO's workloads are sequential in nature and measure raw bandwidth, rather than I/O response time, access latency, etc.

ATTO Disk Benchmark
Transfer Rates by Size

samsung evo plus microsd atto read


samsung evo plus microsd atto write

ATTO's results largely confirm what we saw in CrystalDiskMark. The read speeds are consistent across all three cards, though the Samsung is slightly faster in sub-64 KB reads. On the write side, its sub-64 KB results are actually slightly slower, but most file transfers will be in the 64 KB and up realm where the Samsung is unquestionably ahead.

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Overall, the Samsung EVO Plus MicroSD delivers excellent performance with some of the fastest write speeds offered among UHS-I cards. Blistering speeds and expansive capacities do not come cheap, though. The 512GB card is listed at $199 - that is about $0.40 per gigabyte. Our 128GB SanDisk card for comparison ran us just $28 or $0.22 per gigabyte. Fortunately, SD cards see frequent sale pricing so do keep an eye out.

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In cameras, the SD card speed is often bottlenecked by the device itself. Our Canon 80D, for example, tops out at 90 mbps when recording 1080p footage with All-I frames enabled. 90 mbps converts to 11.25 MB/s which is well within the capabilities of any of our tested cards. If you have a camera or other use case that can use the speed, though, the Samsung EVO Plus MicroSD card is well recommended.



  • 80 MB/s plus write speeds
  • Massive capacity
  • Water, magnet, temperature, X-ray proof
  • Included full-size SD adapter
  • High cost per gigabyte
  • Does not include storage case

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