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CF/SD Performance Database - Continued

Sony DSLR A-900 Write Speed (Firmware Version 1.00)
This page was last updated on October 9, 2008

The data in the table below was derived by timing how long it took the Sony DSLR A-900 to write 20 Extra Fine JPEG and then 10 uncompressed RAW .ARW photos to the memory card. Timing commenced when the camera's card status light illuminated, and stopped when the light went out. Each test cycle was performed 3 times (if the card's capacity allowed for that) to ensure accurate results.

Prior to both JPEG and RAW testing, all CompactFlash cards were first secure erased on a computer, then formatted in the camera. The same test scene was photographed, under the same illumination, for all tests. The identical camera settings and lens were also used for all tests. (This camera has a second slot, for a Memory Stick Duo-series card, but we did not test this media type.)

Interpreting the results The data can be sorted by manufacturer, card type, rated capacity and file format, in both ascending and descending order, by clicking on the appropriate column header. When sorting by JPEG or RAW, the fastest 10% for that format are highlighted in blue. You can view extra information for a card by clicking the icon to the left of the card's name, or for all cards at once by clicking Show Extra Info in the Memory Card header field. Note that MB/sec refers to megabytes per second, and that all calculations are based on 1 megabyte = 1,048,576 bytes.

Memory Card  Show Extra Info
Card Size JPEG RAW
SanDisk Extreme Ducati 8GB 
CF I 8GB 31.2MB/s 35.5MB/s
SanDisk Extreme Ducati 4GB 
CF I 4GB 31.1MB/s 35.5MB/s
Lexar Professional 300X 8GB 
CF I 8GB 28MB/s 33.8MB/s
Lexar Professional 300X 4GB 
CF I 4GB 27.7MB/s 33.4MB/s
SanDisk Extreme IV 2GB 
CF I 2GB 29.4MB/s 32.8MB/s
Kingston Ultimate 266X 2GB 
CF I 2GB 27.2MB/s 32.7MB/s
SanDisk Extreme IV 45MB/s Edition 16GB note
CF I 16GB 30.2MB/s 32.3MB/s
SanDisk Extreme IV 45MB/s Edition 8GB note
CF I 8GB 28.9MB/s 31.6MB/s
Lexar Professional 300X 16GB 
CF I 16GB 26.8MB/s 31.6MB/s
Kingston Ultimate 266X 8GB 
CF I 8GB 27.4MB/s 31.5MB/s
Transcend UDMA 300X 4GB 
CF I 4GB 27.3MB/s 31.5MB/s
Transcend UDMA 300X 8GB 
CF I 8GB 27.3MB/s 31.5MB/s
Kingston Ultimate 266X 4GB 
CF I 4GB 27.2MB/s 31.5MB/s
Hoodman RAW 280X 2GB 
CF I 2GB 25.4MB/s 31.1MB/s
Dane-Elec 300Xs UDMA 8GB 
CF I 8GB 25.7MB/s 30.9MB/s
PNY Optima PRO UDMA 266X 4GB 
CF I 4GB 26.1MB/s 30.8MB/s
Delkin PRO 305X 4GB 
CF I 4GB 24.6MB/s 30.5MB/s
PNY Opt. PRO UDMA (2007) 2GB 
CF I 2GB 24.6MB/s 30.5MB/s
Hoodman RAW 280X 4GB 
CF I 4GB 25.2MB/s 30.4MB/s
Hoodman RAW 280X 8GB 
CF I 8GB 24.7MB/s 30.2MB/s
PNY Opt. PRO UDMA (2007) 8GB 
CF I 8GB 24.1MB/s 30.1MB/s
Transcend 266X 2GB 
CF I 2GB 25.6MB/s 29.8MB/s
ATP Pro Max II 300X 8GB 
CF I 8GB 22.7MB/s 29.7MB/s
A-Data Turbo 350X 16GB 
CF I 16GB 26.7MB/s 29.5MB/s
SanDisk Extreme IV 8GB 
CF I 8GB 24.2MB/s 29.4MB/s
Transcend 266X 8GB 
CF I 8GB 22.2MB/s 29.1MB/s
SanDisk Extreme IV 4GB 
CF I 4GB 23.9MB/s 29MB/s
Transcend UDMA 300X 16GB 
CF I 16GB 24.5MB/s 26.4MB/s
PNY Optima PRO UDMA 266X 8GB 
CF I 8GB 22.4MB/s 25.7MB/s
SanDisk Extreme III 30MB/s Edition 4GB note
CF I 4GB 25.5MB/s 25.6MB/s
SanDisk Extreme III 30MB/s Edition 8GB note
CF I 8GB 21.8MB/s 24.1MB/s
SanDisk Extreme III 30MB/s Edition 16GB note
CF I 16GB 22.7MB/s 24.1MB/s
SanDisk Extreme III 30MB/s Edition 32GB 
CF I 32GB 20.5MB/s 22.3MB/s
Delkin PRO 305X 16GB 
CF I 16GB 18MB/s 19MB/s
Kingston Ultimate 100X 4GB 
CF I 4GB 13.8MB/s 15.4MB/s
Maxell standard 2GB 
CF I 2GB 14.4MB/s 15.4MB/s
Delkin PRO 1GB 
CF I 1GB 13.2MB/s 14.7MB/s
Transcend 133X 32GB 
CF I 32GB 11.8MB/s 13.8MB/s
Delkin PRO 2GB 
CF I 2GB 12.9MB/s 13.6MB/s
Kingston Ultimate 133X 2GB 
CF I 2GB 12.7MB/s 13.4MB/s
SanDisk Extreme III 8GB 
CF I 8GB 11.9MB/s 13.3MB/s
SanDisk Extreme III 4GB note
CF I 4GB 11.9MB/s 13.3MB/s
Ridata Pro 150X 2GB 
CF I 2GB 12.8MB/s 13.3MB/s
ATP Pro Max 1GB 
CF I 1GB 12.9MB/s 13.3MB/s
Hoodman PRO 150X-133X 2GB 
CF I 2GB 12.8MB/s 13.2MB/s
SanDisk Extreme III 2GB 
CF I 2GB 11.9MB/s 13.2MB/s
Transcend 133X 16GB 
CF I 16GB 10.9MB/s 13.2MB/s
Kingston Elite Pro 16GB 
CF I 16GB 10.3MB/s 12.9MB/s
Ridata Lightning 233X 16GB 
CF I 16GB 8.9MB/s 12.6MB/s
Kingston Ultimate 133X 8GB 
CF I 8GB 8.3MB/s 11.2MB/s
SanDisk Extreme III 12GB 
CF I 12GB 9.2MB/s 11.2MB/s
Lexar Professional 133X 8GB 
CF I 8GB 8.5MB/s 11.1MB/s
Ridata 80X PRO II 2GB 
CF I 2GB 9.9MB/s 10.8MB/s
SanDisk Extreme III 16GB 
CF I 16GB 8.9MB/s 10.6MB/s
Ridata Pro 150X 8GB 
CF I 8GB 9.7MB/s 10.6MB/s
Pretec 80X 2GB 
CF I 2GB 9.9MB/s 10.6MB/s
SanDisk Ultra II 2GB 
CF I 2GB 9.9MB/s 10.4MB/s
Transcend 120X 4GB 
CF I 4GB 9.4MB/s 10.3MB/s
SanDisk Ultra II 4GB 
CF I 4GB 9.6MB/s 10MB/s
PNY Optima 80X 1GB 
CF I 1GB 8.8MB/s 9.8MB/s
ATP Pro Max 4GB 
CF I 4GB 8.6MB/s 9.3MB/s
Shikatronics TurboF1 100X 2GB 
CF I 2GB 8.7MB/s 9.2MB/s
Kingston Ultimate 100X 2GB 
CF I 2GB 8.5MB/s 9.1MB/s
SanDisk Extreme 2GB 
CF I 2GB 8.8MB/s 9.1MB/s
TwinMOS Ultra-X 140X 2GB 
CF I 2GB 8.3MB/s 8.8MB/s
SanDisk Ultra II 8GB 
CF I 8GB 7MB/s 8.7MB/s
SanDisk Extreme III 1GB 
CF I 1GB 7.9MB/s 8.2MB/s
Lexar Professional 133X 2GB 
CF I 2GB 7.8MB/s 8MB/s
Lexar Professional 133X 4GB 
CF I 4GB 7.8MB/s 8MB/s
Kingston Elite Pro 2GB 
CF I 2GB 7.3MB/s 7.4MB/s
ATP standard 1GB 
CF I 1GB 7.3MB/s 7.4MB/s
SanDisk Extreme 1GB 
CF I 1GB 7.1MB/s 7.3MB/s
Lexar Prof. 80X (3rd ed.) 2GB note
CF I 2GB 7MB/s 7.2MB/s
Hitachi Microdrive 6GB 
CF II 6GB 6.5MB/s 7.2MB/s
Lexar Prof. 80X (3rd ed.) 4GB note
CF I 4GB 7MB/s 7.2MB/s
Lexar Prof. 80X (3rd ed.) 1GB note
CF I 1GB 7MB/s 7.1MB/s
Transcend 80X 1GB 
CF I 1GB 6.9MB/s 7MB/s
Seagate Photo Hard Drive 8GB 
CF II 8GB 5.8MB/s 7MB/s
Corsair 80X 1GB 
CF I 1GB 6.8MB/s 6.9MB/s
Lexar Prof. 80X (1st ed.) 1GB note
CF I 1GB 6.6MB/s 6.9MB/s
Lexar High-Speed 40X 1GB 
CF I 1GB 6.4MB/s 6.7MB/s
Hagiwara Zpro 2GB 
CF I 2GB 6.2MB/s 6.3MB/s
Transcend 45X 1GB 
CF I 1GB 5.9MB/s 6MB/s
SanDisk standard 2GB note
CF I 2GB 5.2MB/s 5.4MB/s
Calumet ProSpec 110X 2GB 
CF I 2GB 4.9MB/s 5MB/s
Hitachi Microdrive 4GB note
CF II 4GB 4.9MB/s 4.8MB/s
Delkin PRO 8GB 
CF I 8GB 4.4MB/s 4.4MB/s
Hama standard 2GB 
CF I 2GB 4.2MB/s 4.2MB/s
SanDisk standard 4GB 
CF I 4GB 3.5MB/s 4MB/s
Kingston Elite Pro 1GB 
CF I 1GB 3.9MB/s 3.9MB/s
Ridata PRO 52X 2GB 
CF I 2GB 3.7MB/s 3.7MB/s
Hoodman PRO 150X-133X 4GB 
CF I 4GB Error Error
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