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.

Size: Sort: Reader: Read: Write: MB/s

All Media Types, by Perform. Value

Media Type Manufacturer / Model Capacity Read Speed Write Speed Latest Price
SSD Samsung 860 EVO 1TB 1,000.2GB 410.1MB/sec 369.1MB/sec $ 164.95 Buy
SSD Samsung 850 PRO 256GB 256.1GB 409.9MB/sec 338.2MB/sec $ 69.00 Buy
SD Card TeamGroup XTREEM 256GB SDXC V60
Test performed on a StarTech 4SD4FCRU31C reader
252.5GB 269.1MB/sec 177.6MB/sec $ 47.99 Buy
SD Card TeamGroup XTREEM 512GB SDXC V60 (Lexar Reader)
Test performed on a Lexar LRW450UBNA reader
495.2GB 279.4MB/sec 170.3MB/sec $ 94.99 Buy
SD Card TeamGroup XTREEM 512GB SDXC V60
Test performed on a StarTech 4SD4FCRU31C reader
495.2GB 261.3MB/sec 169.5MB/sec $ 94.99 Buy
MicroSD Card SanDisk Extreme 256GB microSDXC UHS-I V30 (Lexar Reader)
Test performed on a Lexar LRW450UBNA reader
255.9GB 175.0MB/sec 119.4MB/sec $ 35.20 Buy
MicroSD Card Samsung EVO Plus 512GB
Test performed on a Lexar LRW450UBNA reader
512.1GB 95.3MB/sec 83.7MB/sec $ 51.12 Buy
SD Card TeamGroup PRO 128GB UHS-1
Test performed on a StarTech 4SD4FCRU31C reader
124.7GB 97.5MB/sec 87.8MB/sec $ 13.99 Buy
SD Card PNY Elite-X 256GB SDXC
Test performed on a StarTech 4SD4FCRU31C reader
249.3GB 97.4MB/sec 87.3MB/sec $ 28.99 Buy
SD Card Samsung PRO Plus Full Size SDXC Card 128GB (Lexar Reader)
Test performed on a Lexar LRW450UBNA reader
128.2GB 156.9MB/sec 121.7MB/sec $ 21.99 Buy
SD Card PNY Elite-X 128GB SDXC
Test performed on a StarTech 4SD4FCRU31C reader
126.4GB 96.1MB/sec 78.4MB/sec $ 14.99 Buy
SSD Samsung 860 QVO 1TB 1,000.2GB 348.4MB/sec 73.0MB/sec $ 187.99 Buy
SD Card Samsung EVO Plus 128GB SDXC Card (Lexar Reader)
Test performed on a Lexar LRW450UBNA reader
128.2GB 132.6MB/sec 65.1MB/sec $ 14.99 Buy
MicroSD Card SanDisk Extreme 256GB microSDXC UHS-I V30
Test performed on a Transcend TS-RDF8K reader
255.9GB 89.9MB/sec 87.6MB/sec $ 35.20 Buy
SD Card SanDisk Extreme 128GB SDXC 150MB/s (Lexar Reader)
Test performed on a Lexar LRW450UBNA reader
127.9GB 173.2MB/sec 91.3MB/sec $ 21.99 Buy
SD Card Lexar Professional 512GB 1066x SDXC (Lexar Reader)
Test performed on a Lexar LRW450UBNA reader
512.1GB 158.9MB/sec 120.4MB/sec $ 105.99 Buy
SD Card Samsung EVO Plus 128GB SDXC Card
Test performed on a StarTech 4SD4FCRU31C reader
128.2GB 97.2MB/sec 64.5MB/sec $ 14.99 Buy
SD Card Lexar Professional 128GB 633x 95MB/s
Test performed on a Kingston FCR-HS4 reader
128.0GB 85.8MB/sec 71.7MB/sec $ 15.99 Buy
SD Card Lexar 128GB High-Performance 633x SDXC
Test performed on a Transcend 4-in-1 USB 3.0 reader
126.4GB 94.9MB/sec 70.0MB/sec $ 15.99 Buy
SD Card TeamGroup ELITE 128GB SDXC
Test performed on a StarTech 4SD4FCRU31C reader
125.1GB 96.7MB/sec 52.0MB/sec $ 12.89 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 or camera's required minimums. You can enter a minimum write speed in the search criteria to limit which cards are shown.

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.

Recommended Card Readers

StarTech 4-Slot SD Card Reader

For general use, when you have to copy data from multiple cards at a time, the StarTech 4-Slot SD Card Reader is our preferred device. We use it on every event when we need to copy footage from our master HyperDeck recorders and the isolated camera feeds with the minimum amount of hassle. With USB 3.2 Gen 2 connectivity for both Type A and C, this unit gives the highest standard UHS-I and UHS-II speeds we've seen, at up to 10 Gigabits per second, giving the speed to read four cards at 250 MB/second simultaneously.

Lexar Multi-Card 2-in-1 USB 3.1 Reader

For the highest perfomance for SD and microSD, we like this 2-in-1 reader from Lexar. For cards which offer performance boosts above normal UHS-I speeds (speeds greater than 104 MB/sec), this reader has proven to be the best we've tried. It not only accelerates reads from Lexar cards, it also speeds up reads and writes from cards from other manufacturers as well, often more than readers from the same manufacturer. We've had great luck with these readers, and they're quite inexpensive.

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.