ProGrade Digital has announced a new 512GB UHS-II V90 Series SD Card that will never drop below a steady write speed of 90MB/s. The company says it is one of the first to offer and ship a card capable of achieving these sustainable write speeds at this capacity.
Formed by industry experts at Lexar and SanDisk, ProGrade Digital is among those that camera companies like Canon and Nikon regularly recommend thanks to its clear performance at the highest levels.
The company says the high-capacity 512GB SDXC UHS-II V90 memory card falls into the Cobalt media class, meaning it promises sustainable read speeds of up to 300MB/s and stable write speeds of up to 250MB/s, but write speeds won’t drop to Less than 90MB/s at any time through card capacity.
Most SD cards on the market advertise read and write speeds on the side of the box, but these numbers only indicate peak performance and don’t mean that they will be able to maintain these speeds over time or through the full capacity of the card. This is the case with these cards as well, although ProGrade says its Cobalt-class cards are designed for high-end video workflow that requires higher steady write speeds to prevent dropped frames.
ProGrade Digital says the SDXC UHS-II, U3, Class 10 and V90 cards deliver superior performance for digital cinema cameras, high-end DSLRs and mirrorless cameras, which produce incredibly rich data streams and require more memory card capacity.
“Today’s creative leaders are producing more videos than ever before,” said Wes Brewer, founder and CEO of ProGrade Digital.
“With the wide range of recording options in today’s high-end professional camera market, such as RAW 8K, 6K, 5K, 4K, UHD, high bit rate MPEG at varying frame rate per second (fps), many of them require high capacity, high performance memory cards. It has We added the 512GB High Capacity SD V90 Memory Card to our SDXC Cobalt product line to meet these needs.”
It’s very rare to run a card test at or above the speeds promised on the packaging, but ProGrade does it here: Tested with 230MB/s write speeds and 252MB/s read speeds.
Although not quite as fast as what comes out of CFexpress, these speeds are pretty good for what is now an older SD card format and should provide excellent performance in many of the latest mirrorless cameras.
For those who are not sure if this card is suitable for their use cases, betapixel He recently explained the differences between memory cards and what terms like V90 and UHS-II mean in A Complete Guide to Memory Cards.
Cobalt cards from ProGrade Digital come with a three-year warranty. The new 512GB variant joins the 256GB, 128GB, and 64GB capacities available in the Cobalt line and will retail for $500.