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.
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 10 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 Reader | 72.591 | 43.506 | 67.807 | 11.278 | 5.795 | 1414.8 | 1.006 | 245.7 | 6.508 | 1588.9 | 1.013 | 247.3 |
SanDisk ImageMate All-In-One USB 3.0 | 72.365 | 43.459 | 62.946 | 10.456 | 3.395 | 828.9 | 0.864 | 210.9 | 3.578 | 873.4 | 0.940 | 229.5 |
Kingston Multi-Card Reader FCR-HS3 | 72.351 | 43.618 | 53.019 | 8.952 | 5.841 | 1426.0 | 0.975 | 238.1 | 6.495 | 1585.6 | 1.123 | 274.1 |
Lexar Professional Dual Slot Reader | 72.311 | 43.731 | 68.180 | 10.780 | 5.534 | 1351.0 | 0.970 | 236.9 | 6.289 | 1535.4 | 1.006 | 245.6 |
Transcend Multi-Card Reader RDF8 Black | 72.156 | 43.535 | 68.033 | 11.516 | 5.431 | 1326.0 | 0.946 | 231.0 | 6.330 | 1545.5 | 1.077 | 262.9 |
Lexar Professional Workflow SR1 | 72.141 | 43.645 | 68.233 | 9.217 | 5.172 | 1262.7 | 0.971 | 237.2 | 6.026 | 1471.1 | 1.111 | 271.2 |
Transcend SD Card Reader RDF5 Black | 72.087 | 43.513 | 68.167 | 9.613 | 3.969 | 969.1 | 0.895 | 218.6 | 4.248 | 1037.1 | 0.897 | 219.1 |
Lexar Professional Workflow SR2 UHS-II | 71.874 | 43.553 | 67.897 | 10.248 | 5.735 | 1400.0 | 1.011 | 246.8 | 6.495 | 1585.6 | 0.949 | 231.8 |
SanDisk Extreme Pro UHS-II SD Reader/Writer | 71.850 | 43.378 | 69.627 | 10.031 | 5.974 | 1458.4 | 1.007 | 245.9 | 6.569 | 1603.8 | 0.835 | 203.9 |
Delkin Universal Memory Card Reader | 71.712 | 43.698 | 67.650 | 12.520 | 5.477 | 1337.3 | 0.951 | 232.3 | 6.297 | 1537.2 | 1.007 | 245.7 |
Kingston MobileLite G4 UHS-II | 71.668 | 43.669 | 69.190 | 12.753 | 5.965 | 1456.2 | 1.010 | 246.5 | 6.505 | 1588.3 | 0.831 | 202.8 |
Lexar Professional Dual Slot UHS-II Card Reader | 71.546 | 43.362 | 68.169 | 13.138 | 5.835 | 1424.6 | 0.936 | 228.5 | 6.549 | 1599.0 | 1.014 | 247.6 |
Lexar LRWM04U-7000 UHS-II Reader | 71.468 | 43.443 | 69.408 | 10.747 | 6.019 | 1469.6 | 1.006 | 245.7 | 6.526 | 1593.2 | 0.992 | 242.1 |
Delkin Dual Slot SD UHS-II and CF Card Reader | 71.337 | 43.326 | 68.112 | 9.315 | 5.669 | 1384.1 | 0.999 | 244.0 | 6.492 | 1585.1 | 1.005 | 245.4 |
Transcend Multi-Card Reader RDF9 | 71.249 | 43.385 | 68.333 | 10.510 | 5.490 | 1340.3 | 1.012 | 247.0 | 6.413 | 1565.7 | 0.967 | 236.1 |
Kingston FCR-HS4 Card Reader | 71.061 | 43.439 | 67.740 | 9.814 | 5.701 | 1391.8 | 1.017 | 248.3 | 6.457 | 1576.5 | 1.021 | 249.1 |
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 II | 38.7 |
Canon 5Ds | 37.8 |
Samsung NX1 | 37.4 |
Nikon D7100 | 36.5 |
Nikon D7200 | 36.0 |
Nikon D5500 | 35.8 |
Nikon D3300 | 35.4 |
Nikon D750 | 34.7 |
Nikon D810 | 34.5 |
Fuji X-T10 | 34.1 |
Olympus E-M5 II | 31.6 |
Nikon D600 | 30.0 |
Sony A7R II | 29.9 |
Pentax K-3 II | 29.7 |
Canon 70D | 29.2 |
Sony A6000 | 29.1 |
Canon 6D | 28.9 |
Nikon D5300 | 28.8 |
Nikon D800 | 27.1 |
Olympus E-M1 | 26.8 |
Olympus E-M10 | 26.2 |
Olympus E-M5 | 23.8 |
Canon Rebel T6i/T6s | 20.6 |
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 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 Revision | 0.1 |
Manufacturer ID (MID) | 0x000028 |
OEM ID (OID) | BE |
Manufacture Date (MDT) | 05/2014 |
Total capacity | 32,026,656,768 bytes |
Compare prices on the Lexar Professional 400x card. The lowest prices are highlighted in the table below. Prices are updated daily.
Card | Size GB | Lowest $ / GB | Prices | ||
---|---|---|---|---|---|
Amazon | B&H Photo | Adorama | |||
Lexar Professional 400x SD | 8 | N/A | Check price | Check price | Check price |
Lexar Professional 400x SD | 16 | $2.50 | $39.95 | Check price | Check price |
Lexar Professional 400x SD | 32 | $2.50 | $79.99 | Check price | Check price |
Lexar Professional 400x SD | 64 | $1.41 | $89.99 | Check price | Check price |
Lexar Professional 400x SD | 128 | $0.78 | $99.99 | Check price | Check price |