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

Acer SC900 UHS-II U3 V90 256GB SDXC Card Review

Acer SC900 UHS-II U3 V90 256GB SDXC Card

Introduction

Acer brand storage products are produced by BIWIN, a prominent manufacturer of flash storage technology in China. The SC900 is the top of the line UHS-II SD card and boasts a read speed of up to 300MB/s and write speed of up to 260 MB/s.

The SC900 card is offered in 64, 128 and 256GB capacities. The card is rated Video Speed Class V90 and can sustain a write speed of at least 90MB/s continuously for 4K and 8K video recording.

The card tested in this review is the 256GB SDXC card. The model name is SC900-256GB and the UPC is 88718401447. Acer memory cards have a 5-year limited warranty. The card is produced in Taiwan.

Acer SC900 UHS-II U3 V90 256GB SDXC Card back

Performance

The Acer SC900 256GB UHS-II card was benchmarked in many card readers to test its performance. In benchmarking the card, the maximum sequential read speed reached 305.1 MB/s. Sequential write speed tests measured up to 263 MB/s in benchmark tests. These measurements are slightly better than the 300MB/s read and 260MB/s write speeds quoted by the company. The high read and write speed can be reached using devices that support UHS-II. The cards are backwards compatible with UHS-I, however the read and write speeds will be limited when used in such devices.

Card: Acer SC900 UHS-II 256GB
Benchmark: CrystalDiskMark 8.0.4 x64
Program settings: 1000 MB, 5 passes, random test data
Operating system: Windows 11 Pro
Motherboard: Gigabyte Z690 UD AX DDR4
Processor: Intel Core i5 @ 3.30GHz
RAM: 32GB DDR4 3200

Acer SC900 UHS-II 256GB
Card Reader Benchmarks
Seq.
Read
1000MB
Q=8
MB/s
Seq.
Read
1000MB
Q=1
MB/s
Seq.
Write
1000MB
Q=8
MB/s
Seq.
Write
1000MB
Q=1
MB/s
Rand.
Read
4KB
Q=32
MB/s
Rand.
Read
4KB
Q=1
MB/s
Rand.
Write
4KB
Q=32
MB/s
Rand.
Write
4KB
Q=1
MB/s
Lexar Professional USB-C Dual-Slot Reader305.098292.134242.699263.0147.3606.5962.0561.723
Lexar Multi-Card 2-in-1 USB 3.1 Reader305.041294.713262.904258.1257.4266.7361.9541.701
Delkin Black Rugged Card Reader302.977286.139266.329192.1637.9976.9882.3091.817
Lexar Professional Multi-Card 3-in-1 USB 3.1 Reader301.254287.828253.437257.5447.3046.5921.8701.693
Kingston MobileLite Plus USB 3.2 SDHC/SDXC UHS-II Card Reader281.289270.867189.170194.0187.8486.9932.2581.681
SanDisk ImageMate PRO USB-C Reader/Writer277.070269.630259.774254.2007.3806.7111.9291.671
Kingston Workflow SD Reader276.476267.100258.431254.2347.2766.7992.0611.675
SanDisk Professional PRO-READER Multi Card Reader275.734269.419254.295250.8467.3336.5991.8251.568
Sony S1 High Speed UHS-II Reader/Writer265.867257.209260.397250.98714.7808.2022.2981.883
Delkin Dual Slot SD UHS-II and CF Card Reader248.021242.612234.464231.44719.39016.7972.4141.881
Delkin Multi-Card CFast SD UHS-II microSD Reader247.109242.745234.583228.48619.06517.0732.2821.864
Transcend Multi-Card Reader RDF9245.381238.983232.143226.44117.87514.2721.9141.897
Kingston FCR-HS4 Card Reader245.189245.688232.468227.78118.09515.0932.1511.869
Transcend Multi-Card Reader RDF8 Black93.62691.63061.01691.23711.5129.1181.3121.252
SanDisk UHS-I Card Reader SDDR-C53192.77392.90190.25890.6727.9466.8741.2591.168
Samsung Full-Size SD Reader (Pro Plus)92.74791.60189.51789.88610.8518.8621.3431.270
Delkin Travel Reader92.21592.01589.33389.87211.35110.8101.3331.215
Transcend SD Card Reader RDF5 Black91.93690.34789.96089.7387.7926.9451.2031.120
Delkin Universal Memory Card Reader91.81691.60581.17091.41711.4048.9721.2841.166
SanDisk Professional PRO-READER SD and microSD Card Reader89.32787.49263.86586.8527.6966.4571.2801.273
Ritz Gear SD Express Card Reader72.61772.23940.21738.9994.3064.1491.0841.015
Delock SD Express Card Reader53.42853.46435.62034.3001.6081.5790.6950.694
SanDisk Extreme Pro UHS-II USB-C Reader SDDR-4090.0000.0000.0000.0000.0000.0000.0000.000

The SC900 card will be tested in digital cameras for write speed. When the tests are completed they will be posted here.

Packaging

Acer SC900 UHS-II U3 V90 256GB SDXC card package Acer SC900 UHS-II U3 V90 256GB SDXC card package back

The following table contains information encoded in the SD card.

Acer SC900 UHS-II 256GB SD — Internal Card Information
Serial number (PSN)346101629
Product Name (PNM)SMI
Product Revision1.0
Manufacturer ID (MID)0x000003
OEM ID (OID)SD
Manufacture Date (MDT)11/2021
Total capacity255,952,158,720 bytes

The card register indicates a production date of November 2021. The Manufacturer ID of 0x000003 and OEM ID "SD" are usually seen on cards produced by SanDisk.

Available sizes and prices

Compare prices on the Acer SC900 UHS-II card. The lowest prices are highlighted in the table below. Prices are updated daily.

CardSize
GB
Lowest
$ / GB
Prices
AmazonB&H PhotoAdorama
Acer SC900 UHS-II 64GB64$0.70$44.99
Acer SC900 UHS-II 128GB128$0.74$94.99
Acer SC900 UHS-II 256GB256$0.59$149.99