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Appeared on: Sunday, March 27, 2016
Lexar Professional 1800x microSDXC 64GB UHS-II review

1. Features

We have in our hands the Lexar Professional 1800x microSD UHS-II card, a very fast and compact storage device designed for professional photographers, videographers, or a mobile device power users. Available in capacities of 32GB (microSDHC), 64GB and 128GB, the
cards leverage UHS-II technology (UHS Speed Class 3 (U3)) and provide a read transfer speed up to 1800x (270MB/s), giving you the speed you need to capture, transfer, and share adventures on the go.

The cards are also backwards compatible with UHS-I devices, performing up to the maximum thresholds of UHS-I speed capabilities (SDR104). The cards also work with older, non-UHS-I devices, performing at Class 10 speeds.We will have a look in the 64GB version of the microSDXC card (model # LSDMI64GCRBNA1800R ), which officially retails for $136.99 but can be purchased from Amazon.com for $99.95. The card's packaging is seen below:

The cards come with an SD UHS-II adapter for easy transfer between devices, and a microSD UHS-II USB 3.0 reader, allowing you to potentially experience the advertised high-speed file transfer (up to 270MB/s read, 250MB/s write), right out of the box. The highest transfer speeds can theoretically be achieved only when paired with a microSD UHS-II USB 3.0 reader. But as it is always the case, the card's actual performance will vary in real time tests.

The memory card is also bundled with a free lifetime copy of downloadable Image Rescue software. Image Rescue recovers most photo and select video files, even if they’ve been erased or the card has been corrupted.

Removing the card from the packaging, we find everything laid out in a plastic retainer as seen above.

Externally, the case is has black and gold textured plastic. The reader measures 1 1/4 inches (32mm) in length including the USB plug. It is 11/16 inches (17mm) wide and 3/8 inches (9mm) tall. The microSD card fits snugly in the slot.

In addition to the USB adapter, Lexar has packaged the microSDXC memory card with a full-size adapter.

2. Tests

It's time to run some benchmarks with the Lexar SDXC card. For our tests, we used the USB 3.0 adapter included with the card ( Lexar LRWM05U-7000 microSD UHS-II card reader). Remember that in order to get the full speeds out of the Exceria Pro UHS-II, you should use a UHS-II compatible reader.

ATTO Disk Benchmark uses compressible data rather than random data. In our testing, we have selected the transfer size to range from 0.5KB to 8MB, and have set the total length of the test to be 256MB.

The Lexar SDXC card showed a consistent reading behavior with files larger than 64K, reading at about 190 MB/s and writing at 140 MB/s.

Crystal Disk Benchmark measures the speeds at which your storage device reads and writes in both compressible (oFill/1Fill) and random, mostly incompressible, data.  We run the benchmark twice, using oFill data first, and then proceeding to test with random data.

The card's sequential read speed with CrystalDisk Mark topped at the 196 MB/s, and the write speed at 183.4 MB/s.


Sequential Read (MB/s )
Sequential Write (MB/s )
Toshiba Exceria PRO 64GB SDXC UHS-II
Lexar Professional 64GB 1800x microSD SDXC UHS-II
196 .5
Toshiba Exceria PRO 32GB SDHC UHS-II

As you see in the above table, the Lexar Professional 1800x microSDXC 64GB UHS-II card was slower than two other UHS-II cards we had tested in the past.

We switched to crystal disk mark that uses random data, which is more consistent with the type of data that would be recorded to the Lexar microSDXC card. The results are provided below and were not much different than what we previously saw:

The Lexar 1800x microSD card was also tested in UHS-I card readers/. The card reverted to UHS-I mode and was limited to 96.5 MB/s read and 77.3 MB/s write speeds. Still fast, but not quite as fast as the fastest UHS-I microSD cards.

3. Summary

This small Lexar Professional UHS-II offers a solid performance, although we couldn't see this card come near the listed specifications. Using the included USB 3.0 adapter, the card reached sequential read and write speeds of 190-200/MB/s and 170-185 MB/s , respectively. That's definitely not slow, but we expected a bit more.

The build quality and overall package you get with the Lexar is great and above any other offerings. You get a two very convenient adapters to help when you use your 4K camcorder, mobile device, or your PC, in order to easily upload, download, erase and delete the files you want.

It is also bundled with free Image Rescue that provides an extra layer of peace of mind and reliability if you ever need to recover lost video and photo files. This latest iteration product from Lexar storage is also backwards compatible with UHS-I type (slower) devices and will perform at the maximum read/writes for your UHS-I devices.

The Lexar Professional 1800x microSDXC 64GB UHS-II card reasonably priced at $99.95.


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