The Wise CFexpress 4.0 Type A Memory Card (CFX4-A Series) is built for one purpose: keeping up with the most demanding Sony cinema and mirrorless cameras on the market. Whether you're shooting 8K RAW on a Sony FX6, capturing ultra-high-speed 4K bursts on the α9 III, or recording rich XAVC S-I footage on the FX3, this card delivers without flinching. With read speeds of up to 1865 MB/s and write speeds of up to 1750 MB/s over PCIe Gen 4 x1 — double the throughput of CFexpress 2.0 — you finally have a card that matches the camera, not the other way round. Available in 256GB, 512GB, and 1TB, the CFX4-A series covers every kind of shoot. The 256GB is the working shooter's reliable second card; the 512GB is the workhorse for full-day productions; and the 1TB is for the long-form filmmaker who simply cannot afford to stop and swap cards mid-shoot. All three capacities carry the VPG400 Video Performance Guarantee, meaning a certified minimum sustained write of 400 MB/s — no dropped frames, no surprises on set. TLC NAND flash ensures consistent performance throughout the card's lifetime, not just on a fresh card. At just 20 x 28 x 2.8 mm and weighing 2 grams, the Type A form factor is one of the most compact professional media formats available. It slots directly into the CFexpress Type A slot found across Sony's Alpha and FX lineup, with full compatibility confirmed across Sony FX30, FX3, FX6, FR7, PXW-Z200, HXR-NX800, α1, α1 II, α7 IV, α7R V, α7S III, and α9 III. All Wise memory cards come with a 5-year limited warranty, extendable to 6 years by registering your purchase within 30 days at wise-advanced.com.tw. Key Features Up to 1865 MB/s read / 1750 MB/s write — PCIe Gen 4 x1, NVMe 1.4 interface, double the speed of CFexpress 2.0 VPG400 certified — guaranteed minimum 400 MB/s sustained write for drop-frame-free recording at any bitrate CFexpress Type A form factor — designed for Sony Alpha and FX cinema cameras Available in 256GB, 512GB, and 1TB — choose the capacity to match your shoot TLC NAND flash — reliable, consistent performance across the card's full lifecycle Ultra-compact and lightweight — 20 x 28 x 2.8 mm, just 2 grams 5-year limited warranty — extendable to 6 years with free product registration What's in the Box Wise CFexpress 4.0 Type A Memory Card (selected capacity) Quick Start Guide Is this card compatible with my Sony camera? The Wise CFX4-A series is compatible with Sony cinema cameras (FX30, FX3, FX6, FR7), Sony camcorders (PXW-Z200, HXR-NX800), and Sony mirrorless cameras (α1, α1 II, α7 IV, α7R V, α7S III, α9 III). Compatibility is based on Wise Advanced's published testing data as of April 2025. Always check your camera's firmware is up to date for best results. What's the difference between CFexpress Type A and Type B? Type A and Type B are different physical formats — they are not interchangeable. Type A is the smaller card, used in Sony Alpha and FX cameras. Type B is the larger card used in cameras like the Nikon Z9, Canon EOS R5, and others. Check your camera's manual to confirm which type it accepts before ordering. Do I need a special card reader to use this card with my Mac or PC? Yes — CFexpress Type A cards require a compatible card reader. Standard SD or USB card readers will not work. We also stock the OWC Atlas Dual CFexpress + SD Card Reader, which supports CFexpress Type A alongside SD cards and connects via USB-C / Thunderbolt. What does VPG400 mean? VPG (Video Performance Guarantee) is a certification from the CompactFlash Association. VPG400 means the card is certified to sustain a minimum write speed of 400 MB/s continuously. This matters for professional video recording — it guarantees no dropped frames even when writing dense 8K RAW or high-bitrate XAVC S-I footage. Which capacity should I choose? The 256GB card suits shooters who work in shorter sessions or prefer to rotate multiple cards. The 512GB is the best all-round choice for a full day of professional production. The 1TB is ideal for long-form filmmakers, documentary work, or anyone who needs to minimise card swaps on set. All three capacities offer identical read/write speeds and VPG400 certification. Specifications Model CFX4-A256M2 (256GB) / CFX4-A512M2 (512GB) / CFX4-A1024M2 (1TB) Form Factor CFexpress Type A Interface PCIe Gen 4 x1, NVMe 1.4 Maximum Read Speed 1865 MB/s Maximum Write Speed 1750 MB/s Minimum Write Speed (VPG) 400 MB/s Video Performance Guarantee VPG400 NAND Flash Type TLC Dimensions 20.0 x 28.0 x 2.8 mm Weight 2 g Operating Temperature -12°C to 72°C (10°F to 162°F) Storage Temperature -25°C to 85°C (-13°F to 185°F) Warranty 5-year limited warranty (extendable to 6 years with free registration) Country of Origin Taiwan Compatibility Sony Cinema Cameras Sony FX30 Sony FX3 Sony FX6 Sony FR7 Sony Camcorders Sony PXW-Z200 Sony HXR-NX800 Sony Alpha Mirrorless Cameras Sony α1 Sony α1 II Sony α7 IV Sony α7R V Sony α7S III Sony α9 III Compatibility based on Wise Advanced published data, April 2025. Results may vary based on camera firmware version and shooting settings.
