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SanDisk Extreme 80MB/s U3 256GB SDXC Card Review

SanDisk Extreme 80MB/s U3 SDXC 256B SD Card

Introduction

The SanDisk Extreme cards offer high performance at a moderate price. The new-for-2015 Extreme 128GB and 256GB UHS-I SDXC cards have been boosted up to 80MB/s read speed rating. This is an upgrade over the 60MB/s read speed rating of the 16, 32 and 64GB Extreme SD cards introduced in mid 2014. All the latest Extreme SD cards are UHS Speed Class 3 (U3) rated to support at least 30MB/s continuous write speed required for 4K video recording. The Extreme U3 differ from the earlier Extreme Plus 80MB/s cards which were labeled U1 speed rating.

SanDisk Extreme 80MB/s 256GB SDXC UHS-I U3 Card Back

The Extreme 256GB UHS-I SDXC card in this review offers a tremendous amount of storage and can offer record hours of HD video recording. SanDisk claims 80MB/s read and 60MB/s write speeds. The card features a gold label that is similar between the Extreme 60MB/s and 80MB/s cards. The card is marked "Made in China" on the bottom.

Performance

The SanDisk Extreme 256GB SDXC card was tested in a variery of card readers. In benchmarks testing it reached 82.1 MB/s sequential read and 79.1 MB/s sequential write. Both surpass the ratings quoted by SanDisk and the write speed was significantly faster than the 60MB/s quoted write speed.

The Extreme 80MB/s outperformed the SanDisk Extreme Plus 80MB/s 32GB card in write speed (79.1MB/s vs 61.2MB/s), however the Extreme Plus posted a higher read speed at 99.5MB/s.

Card: SanDisk Extreme 80MB/s 256GB
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

SanDisk Extreme 80MB/s 256GB
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
Transcend Multi-Card Reader RDF983.01679.08478.84067.0628.9922195.42.927714.68.1161981.52.710661.6
Delkin Dual Slot SD UHS-II and CF Card Reader82.81979.06078.81567.1288.6502111.92.943718.48.1081979.62.716663.0
Delkin Universal Memory Card Reader82.81379.26375.83467.0738.8252154.62.631642.38.5132078.32.545621.4
Lexar Professional Dual Slot UHS-II Card Reader82.80078.78778.55269.3508.8992172.53.293803.97.8731922.13.209783.5
Delkin Travel Reader82.28678.98374.94865.7318.7122127.02.938717.48.1061978.92.722664.6
Sony MRW-E90 XQD 2.0 / SD UHS-II Card Reader82.10678.96575.30266.8658.5002075.22.583630.68.3882048.02.561625.3
Lexar Professional Dual Slot Reader82.08779.13275.33971.0258.6102102.13.708905.37.6251861.73.386826.7
Transcend Multi-Card Reader RDF8 Black82.08779.10875.46271.0028.6432110.13.251793.77.7671896.23.072750.0
Kingston Multi-Card Reader FCR-HS381.85678.89459.24251.3848.7052125.22.953720.88.1501989.92.739668.8
SanDisk ImageMate All-In-One USB 3.081.84379.05470.89660.7925.5141346.32.148524.45.0351229.32.023493.8
Kingston MobileLite G4 UHS-II81.76778.72877.62166.7349.0612212.22.965723.98.0501965.32.723664.9
Lexar Professional Workflow SR2 UHS-II81.51979.00178.55266.9308.7962147.52.969724.88.0821973.22.703660.0
Lexar LRWM04U-7000 UHS-II Reader81.51278.91177.36766.7668.6472111.22.959722.38.1601992.22.723664.9
SanDisk Extreme Pro UHS-II SD Reader/Writer81.50678.87677.44366.6909.1462232.92.943718.48.1701994.72.727665.8
Kingston FCR-HS4 Card Reader81.48178.74677.55766.8989.0072199.02.965723.98.2172006.22.734667.5
Lexar Professional Workflow SR181.48179.04875.30267.0738.9602187.42.952720.77.8671920.72.727665.8
Transcend SD Card Reader RDF5 Black81.28578.81774.86166.3877.2171762.12.315565.36.2931536.32.236546.0

Performance tests are also performed in cameras. So far it performed nearly equally to the Extreme Pro in the Pentax K-3 II (camera-limited) write speed test. Additional in-camera write test results will be added when this card is tested in additional cameras.

SanDisk Extreme 80MB/s 256GB
Tested in Camera
Write Speed
(MB/s)
Canon 80D72.4
Nikon D50071.7
Fuji X-Pro266.3
Canon 5Ds65.6
Fuji X-T1059.0
Olympus PEN-F40.8
Pentax K-3 II37.2
Sony A7R II36.2
Sony A630034.2

Cameras tested with this card: Canon 5Ds, Canon 80D, Fuji X-Pro2, Fuji X-T10, Nikon D500, Olympus PEN-F, Pentax K-3 II, Sony A7R II, Sony A6300

The following table contains information encoded in the SD card.

SanDisk Extreme 80MB/s 256GB SD — Internal Card Information
Serial number (PSN)857899
Product Name (PNM)SE256
Product Revision8.0
Manufacturer ID (MID)0x000003
OEM ID (OID)SD
Manufacture Date (MDT)01/2015
Total capacity255,865,651,200 bytes

Available sizes and prices

Compare prices on the SanDisk Extreme 80MB/s card. The lowest prices are highlighted in the table below. Prices are updated daily.

CardSize
GB
Lowest
$ / GB
Prices
AmazonB&H PhotoAdorama
SanDisk Extreme 80MB/s128$0.48$61.61Check price
SanDisk Extreme 80MB/s256$0.67$171.80Check price