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

Lexar Professional 600x 32GB SDHC Memory Card

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


The Lexar Professional 600x SD card is a high performance SD card for enthusiast and professional photographers. Lexar advertises the 600x at 90MB/s read and 45MB/s write. While there are other cards that boast higher write speeds, it offers one of the faster read speeds available in a UHS-I card. The 600x card is available in 16 and 32GB SDHC as well as 64, 128 and 256GB SDXC formats.

The Lexar brand is owned by Micron after merging in 2006. Lexar has expertise in memory card controller technology and the brand is widely recognized in digital photography. Micron is involved in semiconductor manufacturing including the NAND flash memory chips used inside memory cards. In a joint venture with Intel, Micron produces chips in Lehi, Utah. Final assembly of the memory cards is carried out in Asia.


In memory card readers the Lexar 600x surpassed its read speed rating of 90MB, reaching a peak of 96MB/s. Sequential write speed reached 48MB/s. Both of these are just above the card's advertised speed ratings (90MB/s read and 45MB/s write).

Card: Lexar Professional 600x 32GB 32 GB
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 600x 32GB 32 GB
Card Reader Benchmarks
Lexar LRWM04U-7000 UHS-II Reader96.59048.55086.9189.8816.8141663.60.918224.2
Lexar Professional Workflow SR2 UHS-II96.57248.23386.26010.4036.5851607.60.913222.9
SanDisk Extreme Pro UHS-II SD Reader/Writer95.64748.57086.9909.7486.8811680.00.930227.2
Kingston MobileLite G4 UHS-II95.21348.50586.58813.6116.7921658.20.916223.5
Kingston FCR-HS4 Card Reader94.76548.16685.8939.8206.5601601.60.911222.3
Delkin Dual Slot SD UHS-II and CF Card Reader94.68848.91986.1048.2246.4511575.10.911222.5
Delkin Travel Reader94.68848.12484.3407.7576.5341595.20.894218.3
Transcend SD Card Reader RDF5 Black94.52648.48084.91215.2045.0501233.00.849207.3
Lexar Professional Dual Slot UHS-II Card Reader94.41548.20886.43110.1036.5231592.60.872212.8
Lexar Professional Workflow SR194.39048.65884.71610.9166.0941487.90.902220.3
Lexar Professional Dual Slot Reader94.38148.56185.65410.2606.2031514.40.906221.2
Delkin Universal Memory Card Reader94.27148.33985.20813.4955.8581430.20.865211.2
SanDisk ImageMate All-In-One USB 3.092.78648.31077.0247.3294.1011001.30.795194.1
Kingston Multi-Card Reader FCR-HS389.87547.69361.3609.7746.7711653.10.914223.1
Transcend Multi-Card Reader RDF947.58344.60944.0151.7233.380825.31.561381.2
Transcend Multi-Card Reader RDF8 Black45.66248.48985.69110.9776.2341522.10.881215.1

When testing with digital cameras the actual write speed peaked around 40MB/s in most cameras. Only the Canon 7d Mark II could manage better, with 42.7MB/s write speed. The latest cameras with UHS-I support reach the higher end of this range. Our in-camera testing shows this 32GB 600x card is not much faster than the 32GB 400x card.

Lexar Professional 600x 32GB
Tested in Camera
Write Speed
Canon 7D Mark II42.8
Canon 5Ds42.0
Samsung NX139.6
Nikon D710039.2
Nikon D720039.1
Nikon D550038.0
Nikon D330037.7
Nikon D81037.4
Nikon D75037.4
Fuji X-T1035.9
Olympus E-M5 II33.2
Nikon D60032.3
Pentax K-3 II31.7
Sony A7R II31.5
Nikon D530030.9
Canon 6D30.7
Sony A600030.5
Canon 70D30.2
Olympus E-M128.5
Nikon D80028.4
Olympus E-M1027.9
Olympus E-M524.8
Canon Rebel T6i/T6s20.4

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 D7100, Nikon D5500, Nikon D7200, 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

At the time of this test the 600x was the highest write speed UHS-I SD card offered by Lexar. In subsequent tests the 600x card in 64 GB capacity measured a higher write speed. At Photokina in Fall 2014 Lexar announced two new UHS-II SD cards, the 1000X and 2000X, which achieve better performance in UHS-I mode. See the Lexar 1000X SD card and 2000X SD card reviews for details.

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

Lexar Professional series memory cards have a limited lifetime warranty.

Made in Korea.

The following table contains information encoded in the SD card.

Lexar Professional 600x 32GB SD — Internal Card Information
Serial number (PSN)3040432663
Product Name (PNM)
Product Revision0.1
Manufacturer ID (MID)0x000028
Manufacture Date (MDT)05/2014
Total capacity32,026,656,768 bytes

Available sizes and prices

Compare prices on the Lexar Professional 600x card. The lowest prices are highlighted in the table below. Prices are updated daily.

$ / GB
AmazonB&H PhotoAdorama
Lexar Professional 600x SD16$0.81$12.95Check priceCheck price
Lexar Professional 600x SD32$0.47$37.39$14.95Check price
Lexar Professional 600x SD64$0.86$55.14Check priceCheck price
Lexar Professional 600x SD128$0.51$65.48Check priceCheck price
Lexar Professional 600x SD256$0.39$100.00Check priceCheck price

Note: New Lexar Professional 633x SD cards have been introduced and will replace the current 600x SD cards.

The new Lexar Professional 633x have been reviewed:
Lexar Professional 633x 32GB SDHC card review
Lexar Professional 633x 64GB SDXC card review