Delkin 512GB CFexpress Type B 4.0 Memory Card - Professional Speed

In this review the Delkin 512GB POWER CFexpress Type B 4.0 card is evaluated as a professional-grade option for photographers and videographers who need reliable high-speed capture and fast offloading. The bottom line: this card is for users shooting continuous RAW bursts or cinema-quality video who need sustained write performance and rapid transfer to keep post-production moving. Its combination of burst read/write numbers and a sustained write floor make it a practical choice for modern mirrorless and DSLR workflows.

Key Features

• Burst read up to 3650MB/s: Enables very fast data transfer when offloading large photo and video files to a workstation for editing.
• Burst write up to 3240MB/s: Supports high-bit-rate cinema capture modes so cameras can record heavy codecs without dropping frames.
• Sustained write up to 820MB/s: Provides a dependable minimum write rate for continuous RAW shooting and long 8K or 6K video takes.
• Durable build: Shockproof and waterproof construction reduces the risk of physical failure in field shooting conditions and includes a protective case for storage.
• Rapid workflow: High read speeds and large 512GB capacity let professionals offload quickly and keep working between shoots.

Who It's For

The card is aimed at professional photographers and videographers using high-end mirrorless and DSLR systems, or cameras that support CFexpress Type B, who need to capture 4K, 6K or 8K video and long RAW burst sequences. It is especially useful for shooters who value fast offload times and a durable physical card that stands up to travel and rough conditions.

Enthusiast photographers who rarely shoot high-bitrate video or short-run hobbyists may find this level of sustained performance and capacity more than they need; those users should compare cost and thermal behavior against lower-tier cards designed for lighter workflows.

Pros & Cons

Pros

• Very high burst read and write speeds make post-production faster and reduce wait time when offloading files.
• Sustained 820MB/s write performance handles continuous RAW and heavy video codecs reliably.
• Durable, shockproof and waterproof design with a protective case for field use.

Cons

• Thermal performance receives mixed feedback from users, so sustained peak performance may vary under heavy continuous use.

Specifications

Form factor	CFexpress Type B
Capacity	512GB
Burst read speed	Up to 3650MB/s
Burst write speed	Up to 3240MB/s
Sustained write speed	Up to 820MB/s
Durability	Shockproof, waterproof
Warranty	48-hour replacement and lifetime warranty

Our Verdict

For professionals capturing high-resolution video or long RAW bursts, the Delkin 512GB POWER CFexpress Type B 4.0 card delivers class-leading speeds and a practical sustained write floor that enables reliable recording and quick offloads. It represents strong value for workflows that demand speed and durability, though users should be mindful of variable thermal behavior during extended heavy use.

Frequently Asked Questions

Will this card handle 8K RAW video?
Yes; the card's high burst and sustained write speeds are specified to support data-heavy modes including RAW 8K recording in compatible cameras.

Is the card protected for field use?
Yes; the card is described as shockproof and waterproof and ships with a small protective storage case for convenience.

What warranty is included?
The product includes a 48-hour replacement guarantee for non-working cards and is also covered by Delkin's lifetime warranty.