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

Lexar Professional 1000x UHS-II 64GB Rev C SDXC Memory Card Review

Lexar Professional 1000x UHS-II Rev C 64GB SDXC Memory Card Front

Introduction

The 64GB Lexar 1000x UHS-II card is capable of 150MB/s read and 75MB/s write speeds. It uses the UHS-II interface to achieve the high transfer rate. It is backwards compatible in UHS-I devices but will operate at lower speed. Lexar 1000x SD cards are available in 16, 32, 64, 128 and 256GB capacities. The 64GB SDXC card part number LSD64GCRBNA1000 is reviewed here. The Rev C designation is printed on the product package above the UPC label.

Lexar Professional 1000x UHS-II Rev C 64GB SDXC Memory Card Back

The UHS-II interface is made possible through low voltage signaling and uses a second row of pins that are next to the standard SD card interface. UHS-II memory cards can be used in non-UHS-II devices but will revert to UHS-I speed or below. The fastest speed available in UHS-I is mode SDR104 (104MB/s maximum).

Performance

The Lexar 1000x UHS-II 64GB Rev C card was benchmarked in various card readers to asses read and write speeds. The 64GB card surpassed its 150MB/s speed rating reaching up to 166.5 MB/s sequential read. The write speed in UHS-II mode reached up to 111.5 MB/s sequential write, which is well above the 75MB/s write speed claimed by Lexar. In UHS-I readers the card operated at up to 93.9 MB/s read and 89.6 MB/s write.

Card: Lexar Professional 1000x UHS-II Rev C 64GB
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 1000x UHS-II Rev C 64GB
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
SanDisk Extreme Pro SD UHS-II USB-C Reader166.46789.898142.9242.4548.0531966.11.007245.89.6432354.20.667162.9
SanDisk Extreme Pro UHS-II SD Reader/Writer166.46789.691148.5242.4748.7612139.01.010246.59.0312204.80.610148.8
Sony S1 High Speed UHS-II Reader/Writer166.414111.503137.8332.4438.3962049.91.011246.78.5662091.31.025250.3
Lexar LRWM04U-7000 UHS-II Reader166.388110.785146.5562.4839.3422280.81.050256.210.0212446.51.078263.2
Lexar Professional Dual Slot UHS-II Card Reader166.33573.817151.1122.4489.3512283.11.012247.010.5772582.41.054257.3
Lexar Professional Workflow SR2 UHS-II166.335110.749146.6302.3868.6522112.21.068260.810.2402500.01.073261.9
SanDisk Extreme Pro SD UHS-II Reader/Writer166.30989.745139.5312.4638.4332058.71.008246.18.6342108.01.043254.7
Sony MRW-E90 XQD 2.0 / SD UHS-II Card Reader166.25689.385141.4902.4528.1691994.30.964235.49.2492258.21.004245.0
Delkin Multi-Card CFast SD UHS-II microSD Reader166.25690.022148.0552.4518.7062125.51.003244.810.5642579.11.055257.5
Kingston MobileLite G4 UHS-II166.230110.191147.8832.4319.9632432.30.991242.09.7012368.51.000244.2
ProMaster Professional Dual Card Reader SD UHS-II166.12489.983144.5472.4388.6962123.11.004245.212.6643091.90.855208.8
Transcend Multi-Card Reader RDF9165.99389.477149.2762.4338.6152103.21.026250.413.2903244.71.035252.7
Delkin Dual Slot SD UHS-II and CF Card Reader165.966110.679149.6722.4478.6562113.30.988241.29.3892292.31.051256.5
Kingston FCR-HS4 Card Reader165.888111.054149.8962.4378.7402133.71.000244.210.1632481.31.066260.1
Delkin Universal Memory Card Reader93.90889.02889.2992.4097.3831802.50.885216.07.9491940.60.821200.6
Transcend Multi-Card Reader RDF8 Black93.75788.99888.9212.3616.7701652.70.875213.77.5911853.20.848207.1
Transcend SD Card Reader RDF5 Black93.13270.31387.5532.3885.5961366.20.853208.35.2671285.90.865211.2
Delkin Travel Reader92.84489.57686.0762.4138.0481964.80.929226.77.4921829.20.951232.3
SanDisk ImageMate All-In-One USB 3.090.83369.82177.8772.3714.2791044.70.800195.34.3761068.20.828202.0

The 64GB Lexar 1000x UHS-II Rev C card was tested in several digital cameras. Results for average write speed during continuous shooting are shown in the following table. When more digital cameras are tested the results will be added below.

Lexar Professional 1000x UHS-II Rev C 64GB
Tested in Camera
Write Speed
(MB/s)
Sony A994.4
Canon Rebel T7i78.6
Canon 77D78.2
Nikon D750073.9
Panasonic GH554.9

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

Lexar backs the Professional series memory cards with a limited lifetime warranty. This card was made in Korea.

The following table contains information encoded in the SD card.

Lexar Professional 1000x UHS-II Rev C 64GB SD — Internal Card Information
Serial number (PSN)911540777
Product Name (PNM)6EHHP
Product Revision1.0
Manufacturer ID (MID)0x000028
OEM ID (OID)BE
Manufacture Date (MDT)12/2016
Total capacity62,812,848,128 bytes

Recommendation

Lexar 1000x UHS-II cards are offered at a competitive price that compares to fast UHS-I cards. Their fast 150MB/s read speed makes them stand out, but their write speed sometimes trails some of the faster UHS-I cards. In certain cameras that support UHS-II but not UHS-I mode SDR104, the Lexar 1000x cards have an advantage. It is recommended for those looking for fast download speed (with a UHS-II card reader) and good, but perhaps not the fastest available, write speed.

Available sizes and prices

Compare prices on the Lexar Professional 1000x SD card. The lowest prices are highlighted in the table below. Prices are updated daily.

CardSize
GB
Lowest
$ / GB
Prices
AmazonB&H PhotoAdorama
Lexar Professional 1000x SD UHS-II16$1.12$19.95Check price$17.95
Lexar Professional 1000x SD UHS-II32$0.73$27.40Check price$23.26
Lexar Professional 1000x SD UHS-II64$0.65$57.71Check price$41.33
Lexar Professional 1000x SD UHS-II128$0.66$96.83Check price$83.95
Lexar Professional 1000x SD UHS-II256$0.65$224.99$194.95$167.30