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 Samsung 256 Pro Plus 256.3GB 94.8MB/sec 84.3MB/sec $ 38.39 Buy
SD Card PNY Elite Performance 128GB 95MB/s 124.7GB 93.8MB/sec 75.9MB/sec $ 17.99 Buy
SD Card PNY Elite Performance 256GB SDXC UHS-1 Memory Card 256.7GB 95.5MB/sec 81.8MB/sec $ 39.99 Buy
SD Card Lexar Professional 128GB 633x 95MB/s 128.0GB 85.8MB/sec 71.7MB/sec $ 18.99 Buy
SD Card Lexar Professional 256GB 1667X SDXC UHS-II/U3 256.1GB 239.9MB/sec 120.9MB/sec $ 64.99 Buy
SD Card Lexar Professional 256GB 1667X SDXC UHS-II/U3 256.1GB 203.4MB/sec 108.6MB/sec $ 64.99 Buy
SD Card Lexar Professional 256GB 633X 250.4GB 93.9MB/sec 57.0MB/sec $ 36.99 Buy
SD Card Lexar Professional 128GB 667X 100MB/s 126.4GB 93.1MB/sec 81.0MB/sec $ 28.99 Buy
SD Card Lexar Professional 512GB 1066x 160MB/s 512.1GB 98.2MB/sec 82.4MB/sec $ 119.99 Buy
SD Card SanDisk 128GB Extreme PRO SDXC UHS-1 Card 170MB/sec 127.9GB 87.2MB/sec 85.1MB/sec $ 33.39 Buy
SD Card SanDisk Ultra 128GB 80MB/s 127.9GB 93.9MB/sec 57.6MB/sec $ 23.04 Buy
SD Card SanDisk SanDisk 64GB Extreme PRO UHS-I SDXC 63.9GB 87.1MB/sec 80.3MB/sec $ 18.79 Buy
SD Card Lexar 128GB Professional 1667x 125.2GB 79.3MB/sec 70.6MB/sec $ 33.99 Buy
SD Card PNY Elite-X 512GB 512.0GB 82.5MB/sec 29.7MB/sec $ 65.30 Buy
SD Card SanDisk Ultra 128GB 120MB/s 127.9GB 87.3MB/sec 33.7MB/sec $ 20.11 Buy
CFast Card Transcend CFX650 256GB 256.1GB 248.0MB/sec 199.5MB/sec $ 309.75 Buy
SD Card SanDisk Extreme PRO 32GB 95MB/s 31.9GB 86.5MB/sec 73.3MB/sec $ 15.25 Buy
SD Card Lexar Professional 128GB 1000x 150MB/s 128.0GB 144.4MB/sec 74.9MB/sec $ 69.50 Buy
CFast Card Transcend CFX650 128GB 128.0GB 248.7MB/sec 200.7MB/sec $ 186.99 Buy
SD Card SanDisk Extreme Pro 32.1GB 141.8MB/sec 200.0MB/sec $ 53.50 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.