Mathorn AV PRO SE 512GB (3700MB/s) v4 MK2 CFexpress Type B Memory Card - by Angelbird

The Mathorn AV PRO SE 512GB v4 MK2 is a CFexpress Type B card built for extreme data rates, including 12K RAW video and high-speed continuous shooting. With sustained write speeds of 1050 MB/s and read speeds up to 3700 MB/s, it keeps long takes stable and offloads moving quickly. It is designed for professionals who need consistent performance under heavy recording loads.

Mathorn AV PRO SE 512GB (3700MB/s) v4 MK2 CFexpress Type B Memory Card (Angelbird) Key Features:

• Professional CFexpress Type B card for 12K RAW video capture
• Sustains 1050 MB/s write speed for uninterrupted long recordings
• Reaches up to 3700 MB/s read speed for rapid file transfers
• Uses CFexpress 4.0 and PCIe 4.0 x2 interface for high bandwidth
• Stable Stream technology maintains constant performance across capacity
• Advanced Thermal Management controls heat during heavy recording
• Supports TRIM and SMART functions on compatible cameras
• Low idle power draw helps reduce camera battery drain
• Resistant to shock, dust, moisture and X-ray exposure

What's in the box?

• 1 x Mathorn AV PRO SE 512GB (3700MB/s) v4 MK2 CFexpress Type B Memory Card (Angelbird)

FAQs

What type of recording is this card designed for?

This card is built for extremely high data-rate recording, including 12K RAW video and fast continuous stills shooting. The sustained 1050 MB/s write speed is designed to keep recordings running without dropped frames or interruptions. It suits cinema cameras and high-end hybrids that place heavy demands on media. Performance remains consistent even during long takes.

How does Stable Stream technology affect real-world use?

Stable Stream technology maintains consistent write speeds across the entire 512GB capacity. In practice, this prevents slowdowns as the card fills up during extended recording sessions. This is critical for long-form videos where interruptions are not acceptable. It focuses on predictable behaviour rather than short bursts of speed.

How quickly can footage be offloaded after a shoot?

With read speeds up to 3700 MB/s and sustained reads around 3500 MB/s, large RAW video files transfer very quickly when used with a compatible CFexpress 4.0 reader. This shortens the turnaround time between shooting and post-production. For high-volume projects, it noticeably reduces waiting at the end of the day.

Is the card suitable for demanding field conditions?

Yes. Advanced Thermal Management helps control heat during intensive recording, both indoors and outdoors. The card is also resistant to shock, dust, moisture and X-ray exposure, making it reliable for travel and location work. Support for firmware updates and a manufacturer-backed data recovery service adds long-term security.