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Sony SF-G Series 300MB/s UHS-II 64GB SDXC Card Review

Sony SF-G Series 300MB/s 64GB SDXC UHS-II Memory Card

Introduction

Sony announced SF-G UHS-II memory cards in in February 2017 and promoted their 300MB/s read speed and 299MB/s write speed. The write speed was the highest speed of any UHS-II card to date. The G Series card carries a U3 speed rating meaning it is capable of continuous write speeds of at least 30MB/s making it suitable for recording HD and 4K video. The SF-G cards are available in 32, 64 and 128 GB capacities. This review covers the 64GB SDXC card, model SF-G64/T1 with UPC 027242904330. The card tested is marked Made in Taiwan on the back.

While UHS-II cards claim extremely high transfer rates, these speeds require a UHS-II interface. The cards are backwards compatible and will operate in Standard SD and UHS-I modes although their speed will be limited when used in such devices. The UHS-II interface requires a second set of pins to communicate in the high-speed UHS-II bus mode. Devices lacking those connection will connect to the card using the standard row of SD contacts and will be limited to UHS-I or lower speeds. In UHS-I mode the SF-G card supports SDR104 bus mode which is limited to 104MB/s.

Sony SF-G Series 64GB SDXC UHS-II Memory Card back

Performance

The 64GB Sony SF-G UHS-II card was benchmarked in several USB 3.0 card readers. In UHS-II mode the card measured 278.2 MB/s sequential read speed. The card posted a 255.7 MB/s sequential write speed in the fastest test. This is lower than expected given the 300MB/s read and 299MB/s write speeds claimed by Sony. The closest comparable card, the Lexar 2000x UHS-II 64GB card also reated 300MB/s read speed measured 292.2 in similar benchmark tests. The Lexar also beat the Sony with a 267.0 MB/s write speed.

Card: Sony SF-G 300MB/s UHS-II 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

Sony SF-G 300MB/s UHS-II 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 Reader/Writer278.211255.657220.3853.31911.3462770.11.746426.412.4753045.72.130520.1
SanDisk Extreme Pro SD UHS-II USB-C Reader276.414254.787221.2853.44511.5112810.31.779434.312.5643067.41.995487.0
Lexar Professional Workflow SR2 UHS-II271.793246.029221.1013.44713.0443184.62.038497.613.8583383.32.001488.5
Lexar LRWM04U-7000 UHS-II Reader266.915239.729219.5793.24211.9002905.21.971481.313.4343279.72.102513.3
Lexar Professional Dual Slot UHS-II Card Reader248.743226.157199.7453.33913.7893366.51.796438.614.3883512.72.012491.2
Kingston FCR-HS4 Card Reader246.753225.865200.3433.42813.7593359.21.883459.814.7643604.42.016492.2
Transcend Multi-Card Reader RDF9246.318223.959199.1633.32913.6473331.71.831446.914.6353573.02.023494.0
SanDisk Extreme Pro UHS-II SD Reader/Writer244.338223.839203.7593.43914.4083517.71.848451.215.2323718.72.002488.8
Sony MRW-E90 XQD 2.0 / SD UHS-II Card Reader244.224222.651204.3363.34812.2332986.71.721420.212.9693166.32.081507.9
Kingston MobileLite G4 UHS-II242.838229.322200.0443.32914.4333523.81.851451.915.0983686.02.005489.6
Delkin Multi-Card CFast SD UHS-II microSD Reader242.445234.057189.1363.43312.2312986.21.844450.114.3023491.62.163528.1
Delkin Dual Slot SD UHS-II and CF Card Reader241.468221.125200.7093.44513.7633360.01.907465.614.8663629.41.999488.1
Delkin Travel Reader96.74192.30488.7443.0949.7902390.01.781434.910.1802485.41.846450.6
Transcend Multi-Card Reader RDF8 Black95.77893.24890.3503.0239.0282204.11.589387.89.6362352.41.814442.8
Delkin Universal Memory Card Reader95.74393.31590.1853.1068.9152176.51.555379.69.6102346.21.816443.3
Transcend SD Card Reader RDF5 Black94.89491.62788.5533.2717.0141712.51.542376.57.1981757.31.721420.1
SanDisk ImageMate All-In-One USB 3.093.88390.27880.1643.2585.3791313.21.425347.95.4291325.41.404342.8

This G Series 64GB UHS-II card is scheduled to be included in upcoming camera tests. The write speed will be evaluated in continuous shooting and the results will be posted in the following table.

Cameras tested with this card:

Sony backs the SF-G Series SD cards with a 5-year limited warranty.

The following table contains information encoded in the SD card.

Sony SF-G 300MB/s UHS-II 64GB SD — Internal Card Information
Serial number (PSN)3663433051
Product Name (PNM)G 64
Product Revision4.2
Manufacturer ID (MID)0x000027
OEM ID (OID)PH
Manufacture Date (MDT)02/2017
Total capacity61,941,481,472 bytes

Available sizes and prices

Compare prices on the Sony SF-G UHS-II SD card. The lowest prices are highlighted in the table below. Prices are updated daily.

CardSize
GB
Lowest
$ / GB
Prices
AmazonB&H PhotoAdorama
Sony SF-G UHS-II SD32$2.06$65.99$65.99
Sony SF-G UHS-II SD64$1.69$107.99$107.99
Sony SF-G UHS-II SD128$1.64$209.99$209.99