Camera Memory Speed
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Lexar Professional 1800x UHS-II 128GB microSDXC Memory Card Review

Lexar Professional 1800x UHS-II 128GB microSDXC Memory Card Front

Introduction

Lexar brings huge capacity in a tiny size with the Professional 1800x UHS-II 128GB microSDXC card. The 1800x UHS-II cards offer some of the highest read and write speeds among all microSD cards. They are offered in 32, 64 asn 128GB capacities. All three sizes are claimed to offer 270MB/s read speed, but the write speeds vary by size. The 32GB microSDHC card is rated 245MB/s write, the 64GB variant is quoted at 250MB/s write speed and the 128GB card is rated only 110MB/s write speed. The 128GB is tested in this review. It is model LSDMI128CRBNA1800R with UPC 650590191185

The compact microSD size is intented to fit smartphones, tablets, and action cameras. It can also be used in full-size SD slots in cameras and other devices using the included UHS-II microSD to SD adapter. The blazing speeds quoted are for UHS-II, but when used in older UHS-I and standard SD devices the card reverts to lower speed. Also included is the Lexar LRWM05U-7000 microSD UHS-II card reader which fits USB 3.0 ports.

Lexar Professional 1800x UHS-II 128GB microSDXC Memory Card Back

The reverse side of the card shows the layout of pins necessary for UHS-II compatibility. The lower row of contacts must be used to provide the UHS-II interface. Devices that are not UHS-II enabled will use the top row which is limited ot UHS-I speed and below. UHS-I mode is limited to below 104MB/s bus speed.

Lexar Professional 1800x UHS-II cards are backed by a limited lifetime warranty.

Performance

In card reader benchmark testing the The Lexar 1800x 128GB microSDXC reached its highest speed in UHS-II card readers. The card measured up to 290.1 MB/s sequential read speed, just slightly above the 270 MB/s claimed by Lexar. Sequential write speed topped out at 108.2 MB/s, just off the 110 MB/s claim. In UHS-I card readers, the 128GB 1800x card operates in UHS-I mode and reached high marks of 96.6 MB/s sequential read and 69.9 MB/s sequential write. The write speed in particular trailed several of the faster UHS-I cards.

Note: When this UHS-II card was tested in multi-card readers a microSD to SD UHS-II capable adapter was used. Several multi-card readers support UHS-II only in the full-size slot and not the microSD slot. Testing in non-UHS-II microSD slots provides only UHS-I speed.

Card: Lexar Professional 1800x microSD UHS-II 128GB
Benchmark: CrystalDiskMark 3.0.3 x64
Program settings: 1000 MB, 5 passes, random test data
Operating system: Windows 8.1 Pro
Motherboard: Gigabyte GA-Z77X-UD3H
Processor: Intel Core i7-3770K @ 4.40GHz
RAM: 32GB DDR3 1600

Lexar Professional 1800x microSD UHS-II 128GB
Card Reader Benchmarks
Seq.
Read
1000MB
MB/s
Seq.
Write
1000MB
MB/s
Rand.
Read
512KB
MB/s
Rand.
Write
512KB
MB/s
Rand.
Read
4KB
MB/s
QD1
Rand.
Read
4KB
IOPS
QD1
Rand.
Write
4KB
MB/s
QD1
Rand.
Write
4KB
IOPS
QD1
Rand.
Read
4KB
MB/s
QD32
Rand.
Read
4KB
IOPS
QD32
Rand.
Write
4KB
MB/s
QD32
Rand.
Write
4KB
IOPS
QD32
Delkin Black Rugged Card Reader290.063108.246199.2290.96911.6042833.00.960234.312.9933172.01.175286.8
SanDisk Extreme Pro SD UHS-II Reader/Writer271.828107.801199.8451.02612.7143104.00.816199.214.6003564.31.069260.9
SanDisk Extreme Pro SD UHS-II USB-C Reader270.635107.812193.5030.89413.0143177.20.889217.114.6763583.00.998243.6
Lexar LRWM04U-7000 UHS-II Reader268.075106.954200.1431.07113.9603408.20.852208.014.9213642.80.954232.9
Lexar Professional Workflow SR2 UHS-II266.339107.348199.9771.05613.7843365.41.065260.116.1223936.01.056257.8
Sony S1 High Speed UHS-II Reader/Writer266.035107.756195.3430.99212.6013076.40.909221.814.1083444.41.315321.1
Delkin Dual Slot SD UHS-II and CF Card Reader244.623106.552184.2660.96614.2423477.10.816199.117.4154251.80.829202.5
Lexar Professional Dual Slot UHS-II Card Reader240.004107.293176.3930.99514.8853634.00.865211.117.0344158.70.918224.1
Sony MRW-E90 XQD 2.0 / SD UHS-II Card Reader238.964105.863185.0330.85113.2923245.20.863210.815.2003710.91.043254.5
SanDisk Extreme Pro UHS-II SD Reader/Writer238.611106.736179.8561.20614.6823584.50.810197.716.9574139.90.817199.4
SanDisk microSD UHS-II USB 3.0 Reader238.557105.459179.4370.97713.5353304.50.921224.815.8003857.41.041254.3
Kingston MobileLite G4 UHS-II235.900107.546177.4891.05714.6583578.50.819200.016.8284108.31.037253.3
Lexar LRWM05U-7000 UHS-II microSD Reader234.136105.831186.4990.92612.5363060.50.887216.514.3643506.90.819200.0
Transcend Multi-Card Reader RDF9233.095107.162184.0220.99614.9373646.60.794193.917.3914245.71.012247.2
ProMaster Professional Dual Card Reader SD UHS-II232.500108.145186.6541.21415.5393793.71.038253.417.2054200.50.983240.1
Kingston FCR-HS4 Card Reader231.066106.368187.0270.94014.7013589.20.810197.816.7344085.60.872213.0
Delkin Multi-Card CFast SD UHS-II microSD Reader210.220106.878173.5191.12715.0263668.40.807197.118.0664410.71.119273.2
Delkin Travel Reader96.58169.91484.5350.8959.4242300.80.840205.210.6642603.61.025250.2
Lexar C1 USB-C microSD Reader96.57269.41083.9280.7257.4161810.60.873213.18.0141956.40.966235.8
Delkin Universal Memory Card Reader96.56369.81785.8930.8419.1922244.20.767187.310.5482575.30.745181.9
Transcend Multi-Card Reader RDF8 Black96.52769.53085.5050.8459.2632261.40.790192.910.5512575.90.910222.1
Lexar LRWM03U-7000 UHS-I microSD Reader95.37769.48484.3960.8867.7741897.90.816199.39.4802314.50.800195.4
Transcend SD Card Reader RDF5 Black94.92069.51683.9680.7426.7701652.81.086265.27.1751751.70.825201.3
SanDisk ImageMate All-In-One USB 3.093.95869.80775.7220.8115.0561234.40.814198.65.2411279.50.840205.0

The table below shows results from testing the card in cameras. When additional cameras are tested with this card the results will be updated in the table below.

Lexar Professional 1800x microSD UHS-II 128GB
Tested in Camera
Write Speed
(MB/s)
Sony A9105.8
Canon Rebel T7i71.0
Canon 77D70.8
Panasonic GH566.8
Nikon D750066.2

Cameras tested with this card: Canon 77D, Canon Rebel T7i, Nikon D7500, Panasonic GH5, Sony A9

The following table contains information encoded in the SD card.

Lexar Professional 1800x microSD UHS-II 128GB microSD — Internal Card Information
Serial number (PSN)3672437388
Product Name (PNM)SD128
Product Revision4.2
Manufacturer ID (MID)0x000027
OEM ID (OID)PH
Manufacture Date (MDT)01/2016
Total capacity128,412,811,264 bytes

Available sizes and prices

Compare prices on the Lexar Professional 1800x UHS-II microSD card. The lowest prices are highlighted in the table below. Prices are updated daily.

CardSize
GB
Lowest
$ / GB
Prices
AmazonB&H PhotoAdorama
Lexar Professional 1800x UHS-II microSD32$1.63$60.51$63.50$52.25
Lexar Professional 1800x UHS-II microSD64$1.95$124.95$124.95$124.95
Lexar Professional 1800x UHS-II microSD128$1.30$166.95$166.95$166.95