Doug Johnson Productions

Disk Performance

Using the DJ Drive Tool, we and others have tested and compiled real-world media performance data. Having this data makes buying decisions for your media needs easier.

Card Type: Capacity: Sort By:

All Types, by Best Performance Value

Card Type Manufacturer / Model Capacity Read Speed Write Speed Latest Price
SD Card Lexar Professional 128GB 667X 100MB/s 126.4GB 93.1MB/sec 81.0MB/sec $ 19.99 Buy
SD Card Lexar Professional 128GB 633x 95MB/s 128.0GB 85.8MB/sec 71.7MB/sec $ 19.97 Buy
SD Card Lexar Professional 256GB 1000x 150MB/s 250.3GB 153.9MB/sec 100.1MB/sec $ 57.99 Buy
SD Card PNY Elite Performance 128GB 95MB/s 124.7GB 93.8MB/sec 75.9MB/sec $ 25.94 Buy
SD Card SanDisk Ultra 128GB 80MB/s 127.9GB 93.9MB/sec 57.6MB/sec $ 21.45 Buy
SD Card Lexar Professional 128GB 1000x 150MB/s 128.0GB 144.4MB/sec 74.9MB/sec $ 27.99 Buy
SD Card SanDisk Extreme PRO 64GB 95MB/s 63.9GB 92.1MB/sec 81.5MB/sec $ 16.50 Buy
SD Card SanDisk Extreme PRO 128GB 95MB/s 127.9GB 68.4MB/sec 87.6MB/sec $ 51.99 Buy
SD Card SanDisk Extreme 64GB SDXC UHS-I 63.9GB 84.7MB/sec 51.1MB/sec $ 17.69 Buy
CFast Card Transcend CFX650 256GB 256.1GB 248.0MB/sec 199.5MB/sec $ 279.00 Buy
CFast Card Transcend CFX650 128GB 128.0GB 248.7MB/sec 200.7MB/sec $ 155.89 Buy
SD Card SanDisk Extreme PRO 32GB 95MB/s 31.9GB 86.5MB/sec 73.3MB/sec $ 16.50 Buy
SD Card Sony Sony 128GB M Series UHS-II SDXC 128.3GB 208.9MB/sec 82.4MB/sec $ 91.95 Buy
SD Card Lexar Professional 64GB 2000x 300MB/s 64.1GB 193.9MB/sec 138.8MB/sec $ 89.99 Buy
SD Card Sony 32GB 94MB/Sec 32.2GB 86.2MB/sec 68.0MB/sec $ 23.29 Buy
USB Flash Drive Kingston DTSE9 G2 64GB USB 3.0 62.9GB 59.2MB/sec 16.9MB/sec $ 11.99 Buy
USB Flash Drive SanDisk Ultra Fit 128GB USB 3.1 123.0GB 51.1MB/sec 11.9MB/sec $ 16.99 Buy
USB Flash Drive Super Talent USB 3.0 Express RC4 32GB 30.0GB 115.4MB/sec 171.2MB/sec $ 60.87 Buy
SD Card Lexar Professional 16GB 600x 16.0GB 76.1MB/sec 77.3MB/sec $ 39.95 Buy
USB Flash Drive Kingston DataTraveler SE9 16GB USB 2.0 15.6GB 17.5MB/sec 4.1MB/sec $ 4.99 Buy

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How is this useful?

Manufacturers of SD, Compact Flash, CFast, and other media don't often advertise the write speeds of their cards. But in the video production world, sustained write speed is the most important metric. We need to know that cards are going to be able to write data as fast as our cameras and other recorders generate it.

Which Card Should I Get?

Short answer? Get a card as fast as your budget allows, as long as it is fast enough for your production workflow.

Longer answer? Get cards with write speeds in the above table higher than your recorder's required minimums.

Data rates vary quite a bit, based on the codec, resolution, frame rate, and even image quality of the camera. For example, at DJP we use the Hyperdeck Studio Mini from Blackmagic Design for most of our recording needs, and shoot in formats from 1080p24 up through 2160p30, usually in ProRes. Cards which are capable of writing at rates of 100MB/sec usually work well for this. Our cameras needs are more modest, where 40 MB/sec is plenty for 2160p30 in XAVC-S.

Submit a Card

Use the DJ Drive Tool to perform disk testing and submit card performance data to this site.

We recommend using the 'Refresh' mode to perform both read and write testing.