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Kioxia EXCERIA PRO G2 SDXC V90: BiCS FLASH technology for 8K performance

From the moment a unique scene appears in the viewfinder to the moment the files reach a secure editing station, the technical chain must be flawless. For a videographer working in 8K or a photographer capturing fast-action sequences, the choice of storage medium becomes a decision of both security and performance. Kioxia, a brand from the former memory division of Toshiba, offers with the EXCERIA PRO G2 SDXC V90 range a solution that relies on complete industrial expertise. This lineage with the inventor of flash memory ensures consistency between the controller and the storage cells, a critical point for the stability of large data streams [1].

This UHS-II card positions itself as a tool for demanding environments. It doesn't just display high numbers on its label. It incorporates specific technological choices, such as the 3D BiCS FLASH structure and an internal safety fuse. These elements address real-world needs encountered in the field, where heat, static electricity, and data density put equipment to the test.

Performance reaches 310 MB/s for reading, which speeds up the transfer of images. For writing, the 512 GB model peaks at 300 MB/s, while the 64 GB to 256 GB versions achieve 295 MB/s. These values allow the camera's buffer to be emptied instantly during RAW burst shooting, ensuring a smooth workflow that is essential for not missing any action. This responsiveness prevents the camera from locking up at the most critical moments.

The reliability of a memory card depends on the architecture of its chips. Kioxia uses its BiCS FLASH 3D technology, which involves stacking memory cells vertically rather than aligning them on a single layer. This three-dimensional structure increases storage density without compromising data stability. It also reduces power consumption per gigabyte transferred, which is a benefit for preserving battery life during extended shoots [1].This approach offers superior endurance compared to traditional flash memory. The cells better withstand repeated write cycles, a crucial factor for a storage device that is formatted daily. Error management is ensured by a controller optimized for this structure. On expeditions, this reliability guarantees consistent performance, even when the card is nearing its maximum capacity.

Data security takes on an unexpected physical form in this model. The Kioxia EXCERIA PRO G2 incorporates an internal electrical fuse, a rare component in the SD card market. This device is designed to react in the event of abnormal overcurrent. If a malfunction occurs in the camera or during connection to a faulty card reader, the fuse interrupts the electrical circuit. This action prevents excessive overheating that could irreparably damage the memory chips or cause a fire [2].

This fuse is an insurance policy against electrical mishaps. On a boat, where voltages fluctuate and humidity is constant, it acts as a safeguard for your images. Immunity to electrostatic discharge complements this device, protecting the circuits during frequent handling between the camera housing and the card reader. The design of the Kioxia minimizes the risk of damage related to these discharges by isolating sensitive circuits from the controller.## Environmental Robustness and Waterproofing Limits

The operating environment imposes various physical constraints. The card is certified to function within a temperature range of -25°C to 85°C. This tolerance allows for seamless operation, transitioning from the cold of a piece of equipment stored in a cabin to the tropical heat on a boat deck. It also resists X-rays according to the ISO7816-1 standard, ensuring the security of files during airport security checks [1].

A key consideration is waterproofing. Unlike microSD cards, the official documentation for the SDXC format does not confirm IPX7 certification. Therefore, it should be handled with dry hands and stored in a rigid case. The lack of certification against mechanical shocks also suggests careful handling of the enclosure to preserve the physical integrity of the card when it is not inserted into a device.

The Kioxia EXCERIA PRO G2 V90 is primarily aimed at professionals whose equipment requires very high data transfer rates. Videographers shooting in 8K or 4K All-Intra will find the V90 certification provides the necessary assurance to secure their workflows. The 512GB capacity is particularly relevant for long shoots where changing the card frequently should be minimized to reduce the sensor's exposure to ambient humidity.Action photographers can take advantage of the fast write speed to utilize the burst shooting capabilities of their mirrorless cameras. Quickly clearing the buffer allows you to stay ready for the next moment. Finally, those who prioritize safety will appreciate the built-in fuse, a major advantage in remote locations where a power failure could compromise an entire shoot.

Choosing this housing means opting for proven technology that serves creativity. The balance between the speed of the BiCS FLASH memory and the protection of the safety fuse provides a stable working environment. The equipment fades into the background, allowing you to focus on the light and the subject.

In a marine environment, technical reliability is the foundation of any success. By using a housing designed for the demands of 8K, you can be sure that the technology remains a silent ally. Once the files are transferred and secured, there is the satisfaction of having captured a fragment of the world, supported by a tool capable of keeping pace with the elements.

To compare this model with all the references on the market, consult our SD and microSD card comparator and our complete selection of diving equipment.

[1]: https://apac.kioxia.com/en-apac/personal/sd-card/exceria-pro-g2-v90.html "Kioxia EXCERIA PRO G2 SDXC V90 Specifications" [2]: https://europe.kioxia.com/en-europe/personal/news/2026/20260129-1.html "Kioxia Press Release on New Storage Solutions 2026"

<!-- Image 1: Close-up view of the Kioxia EXCERIA PRO G2 card inserted into the memory card slot of a mirrorless camera, highlighting the V90 logo and the "512 GB" marking. Alt text: 512 GB Kioxia EXCERIA PRO G2 V90 SD card in a professional camera body.

Image 2: Schematic illustration showing the BiCS FLASH 3D structure with its layers of cells stacked vertically for increased storage density. Alt text: Diagram of the BiCS FLASH 3D memory technology used by Kioxia. -->