Introduction

For weeks, I’ve been putting the SanDisk Extreme PRO CFexpress Card Type B (model number: SDCFE-128G-GN4NN) through its paces. This 128GB card promises blazing-fast read and write speeds, making it ideal for professional photographers and videographers working with high-resolution RAW files and 4K video. Does it live up to the hype? Let’s dive in.

Features

The SanDisk Extreme PRO CFexpress card is designed for speed. Its key features include a claimed 1700MB/s read speed and 1200MB/s write speed. This translates to significantly faster file transfers and dramatically reduced waiting times. The inclusion of RescuePRO Deluxe Recovery Software is a welcome addition, providing a safety net against data loss. The card itself feels robust and well-built, withstanding the rigors of regular use.

Performance

I tested the SDCFE-128G-GN4NN with a variety of cameras and workflows, including shooting RAW stills and 4K video. The read and write speeds were impressive, consistently exceeding advertised performance. During video recording, buffer clearing was remarkably fast, allowing me to seamlessly continue recording without interruption. File transfers to my computer were significantly quicker compared to my previous CFexpress card. I experienced no noticeable performance degradation, even after extended periods of continuous recording and data transfer.

However, I did notice some minor variations in write speeds during sustained 4K 60fps recording sessions, though these fluctuations were minimal and did not significantly impact workflow. As the manufacturer states, performance can vary depending on the host device, file attributes, usage conditions, and other factors.

Pros & Cons

• Pros: Extremely fast read and write speeds; robust build; RescuePRO Deluxe software included; excellent performance for 4K video recording.
• Cons: Minor write speed fluctuations during prolonged 4K 60fps recording; premium price point.

Final Verdict

The SanDisk Extreme PRO CFexpress Card Type B (SDCFE-128G-GN4NN) is a top-tier memory card that delivers exceptional performance for demanding workflows. While the price is higher than some alternatives, the speed and reliability make it a worthwhile investment for professionals who need the absolute best. The included RescuePRO software is a great bonus, offering peace of mind. I highly recommend it for photographers and videographers working with high-resolution files and 4K video.