Camera Memory Speed
Memory Card Comparison & Performance Tests for Digital Cameras

Lexar Professional 400x 32GB SDHC Memory Card

Lexar Professional 400x 32GB SDHC Memory Card Front Lexar Professional 400x 32GB SDHC Memory Card Back

Introduction

The Lexar Professional 400x SD card is a budget choice for photography enthusiasts and working professionals. This UHS-I Class 1 card is advertised as 60MB/s read and 20MB/s write speed. The card surpasses both these marks in our tests, especially the write speed. The 400x card is available in 8, 16, 32, 64 and 128 GB capacities.

Lexar is a well-known brand in Digital Photography. Since merging with Micron in 2006, it is one of the few memory card brands involved in manufacturing flash memory chips. The chips are produced in Lehi, Utah while final assembly is handled in Asia.

Performance

In testing the Lexar 400x reached 72MB/s read speed in several USB 3.0 readers. Write speed in card readers was around 43MB/s.

Card: Lexar Professional 400x 32GB
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 400x 32GB
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 Travel Reader72.59143.50667.80711.2785.7951414.81.006245.76.5081588.91.013247.3
SanDisk ImageMate All-In-One USB 3.072.36543.45962.94610.4563.395828.90.864210.93.578873.40.940229.5
Kingston Multi-Card Reader FCR-HS372.35143.61853.0198.9525.8411426.00.975238.16.4951585.61.123274.1
Lexar Professional Dual Slot Reader72.31143.73168.18010.7805.5341351.00.970236.96.2891535.41.006245.6
Transcend Multi-Card Reader RDF8 Black72.15643.53568.03311.5165.4311326.00.946231.06.3301545.51.077262.9
Lexar Professional Workflow SR172.14143.64568.2339.2175.1721262.70.971237.26.0261471.11.111271.2
Transcend SD Card Reader RDF5 Black72.08743.51368.1679.6133.969969.10.895218.64.2481037.10.897219.1
Lexar Professional Workflow SR2 UHS-II71.87443.55367.89710.2485.7351400.01.011246.86.4951585.60.949231.8
SanDisk Extreme Pro UHS-II SD Reader/Writer71.85043.37869.62710.0315.9741458.41.007245.96.5691603.80.835203.9
Delkin Universal Memory Card Reader71.71243.69867.65012.5205.4771337.30.951232.36.2971537.21.007245.7
Kingston MobileLite G4 UHS-II71.66843.66969.19012.7535.9651456.21.010246.56.5051588.30.831202.8
Lexar Professional Dual Slot UHS-II Card Reader71.54643.36268.16913.1385.8351424.60.936228.56.5491599.01.014247.6
Lexar LRWM04U-7000 UHS-II Reader71.46843.44369.40810.7476.0191469.61.006245.76.5261593.20.992242.1
Delkin Dual Slot SD UHS-II and CF Card Reader71.33743.32668.1129.3155.6691384.10.999244.06.4921585.11.005245.4
Transcend Multi-Card Reader RDF971.24943.38568.33310.5105.4901340.31.012247.06.4131565.70.967236.1
Kingston FCR-HS4 Card Reader71.06143.43967.7409.8145.7011391.81.017248.36.4571576.51.021249.1

When used in actual digital cameras the write speed was slightly lower. The highest in-camera write speed was found in the Canon 7d Mark II, where it measured 38.7MB/s. The Lexar 400x is fine for general photography but for rapid continuous shooting a card with a higher write speed would yield better performance.

Lexar Professional 400x 32GB
Tested in Camera
Write Speed
(MB/s)
Canon 7D Mark II38.7
Canon 5Ds37.8
Samsung NX137.4
Nikon D710036.5
Nikon D720036.0
Nikon D550035.8
Nikon D330035.4
Nikon D75034.7
Nikon D81034.5
Fuji X-T1034.1
Olympus E-M5 II31.6
Nikon D60030.0
Sony A7R II29.9
Pentax K-3 II29.7
Canon 70D29.2
Sony A600029.1
Canon 6D28.9
Nikon D530028.8
Nikon D80027.1
Olympus E-M126.8
Olympus E-M1026.2
Olympus E-M523.8
Canon Rebel T6i/T6s20.6

Cameras tested with this card: Canon 5Ds, Canon 6D, Canon 7D Mark II, Canon 70D, Canon Rebel T6i/T6s, Fuji X-T10, Nikon D750, Nikon D810, Nikon D800, Nikon D600, Nikon D7200, Nikon D7100, Nikon D5500, Nikon D5300, Nikon D3300, Olympus E-M1, Olympus E-M5, Olympus E-M5 II, Olympus E-M10, Pentax K-3 II, Samsung NX1, Sony A7R II, Sony A6000

Lexar Professional 600x 32GB SDHC Memory Card Package Front Lexar Professional 600x 32GB SDHC Memory Card Package Back

Lexar Professional memory cards are covered by a limited lifetime warranty to the original purchaser.

Made in Korea.

The following table contains information encoded in the SD card.

Lexar Professional 400x 32GB SD — Internal Card Information
Serial number (PSN)2584377460
Product Name (PNM)
Product Revision0.1
Manufacturer ID (MID)0x000028
OEM ID (OID)BE
Manufacture Date (MDT)05/2014
Total capacity32,026,656,768 bytes

Available sizes and prices

Compare prices on the Lexar Professional 400x card. The lowest prices are highlighted in the table below. Prices are updated daily.

CardSize
GB
Lowest
$ / GB
Prices
AmazonB&H PhotoAdorama
Lexar Professional 400x SD8$4.12$33.00Check priceCheck price
Lexar Professional 400x SD16$1.19$18.99Check priceCheck price
Lexar Professional 400x SD32$0.78$24.99Check priceCheck price
Lexar Professional 400x SD64$1.17$74.99Check priceCheck price
Lexar Professional 400x SD128$1.01$129.07Check priceCheck price