Huawei's NM cards benchmarked, show microSD-like performance.

Peter, 21 January 2019

Huawei is pushing for a new memory card standard – NM – but is it any good? Benchmarks show that the cards perform on par with their microSD counterparts. They use the eMMC 4.5 protocol with an UHS-I U3 speed rating, promising peak read speeds of 90MB/s and sustained write speeds of 30MB/s.

That’s theoretical, here’s what you can expect in practice based on the numbers by Hi-Tech:

Read Write
Maximum 74 MB/s 83 MB/s
Average 70 MB/s 73 MB/s

Copying a 6.7GB file took 1 minute 33 seconds, that’s 72MB/s. Note that a 128GB NM card was tested (user-available capacity is 123.73GB after formatting). Currently that’s the only capacity available, but 256GB and 64GB models are coming (all manufactured by Toshiba for now).

NM card storage benchmark
NM card storage benchmark

Only four phones support the standard, the four Mate 20 models, though there are probably more on the way. There’s a USB adapter if you want to browse one of these cards on your computer, but they are not nearly as ubiquitous as SD readers.

Source (in Russian)


Reader comments

Releasing these cards doesn't seem like an inspired move to me. Huawei already had a problem, namely the lack of GApps; however this problem can be overcome by the user. They created another problem by releasing NM card (which cannot be...

  • Anonymous
  • 25 Jul 2020
  • Nvm

I am in favour of the new NM standard

  • Anonymous
  • 24 Jun 2020
  • nw}

Anyone any idea how many read/write cycles?

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