Sony CFexpress Type A Memory Card 320GB - Fast, Durable Storage

In this review the Sony CFexpress Type A 320GB memory card is examined for photographers and videographers who need high sustained throughput and reliable endurance. The bottom line: this card is geared toward content creators shooting high resolution, high bitrate video or burst photography who need consistent performance and ruggedness. Its standout advantage is the combination of up to 800MB/s read and 700MB/s write speeds paired with effective heat dissipation, which keeps transfers steady during long shoots and large file writes.

Key Features

• High read speed: Up to 800MB/s read speed lets you move large video files and photo libraries to your workstation quickly.
• Fast write performance: Up to 700MB/s write speed supports sustained recording of high bitrate video and long raw photo bursts without buffer stalls.
• Large capacity: The 320GB capacity holds many hours of high resolution video or thousands of high-resolution images before you need to offload.
• Thermal management: Effective heat dissipation maintains stable performance during extended transfers and continuous recording sessions.
• Rugged design: TOUGH construction and resistance to impact, bending, dust and moisture protect media in demanding field conditions.
• Environmental resilience: Designed to resist humidity, X-ray exposure, electrostatic charge and ultraviolet radiation for safe transport and storage.

Who It's For

This card is aimed at professional and enthusiast camera users who record 4K and higher-resolution video at high bitrates or photographers shooting fast burst sequences in raw. The combination of high sustained write speed and heat dissipation makes it especially suitable for long recording takes and back-to-back shoots where reliability matters.

It is less relevant for casual phone users or anyone who only records short, low-bitrate clips; those users will find standard SD or lower-capacity cards more cost effective. Also, confirm your device supports CFexpress Type A before purchasing, as compatibility varies by camera model.

Pros & Cons

Pros

• Excellent sustained write speed for high bitrate video and continuous raw shooting.
• Large 320GB capacity reduces the need to swap cards during long sessions.
• Robust TOUGH design and environmental resistance protect shoots in rough conditions.

Cons

• Higher-performance and rugged features come at a premium compared with basic memory cards.
• Requires a camera or reader that supports CFexpress Type A, limiting backward compatibility with older devices.

Specifications

Brand	Sony
Capacity	320GB
Read Speed	Up to 800MB/s
Write Speed	Up to 700MB/s
Durability	TOUGH: impact, bending, dust and moisture resistant
Environmental Resistance	Humidity, X-ray, electrostatic, ultraviolet resistant
Model Notes	Designed for high resolution, high bitrate video and fast photography

Our Verdict

The Sony CFexpress Type A 320GB is a strong choice for professionals and serious enthusiasts who need reliable, high-speed storage for demanding video and photo work. Its sustained 700MB/s write capability, high capacity and robust construction deliver value where downtime or data loss is not an option.

Frequently Asked Questions

Will this card handle continuous 4K or higher bitrate recording?
Yes; the card's sustained write speed and thermal design are intended to support continuous high bitrate recording in compatible cameras.

Is the card durable for field use?
Yes; the TOUGH construction and resistance to dust, moisture and other environmental factors make it suitable for outdoor shoots.

How much storage does 320GB provide for video?
It provides substantial space for many hours of high resolution video or thousands of photos, depending on your chosen codec and bitrate.