SANDISK OPTIMUS GX PRO 850X 4TB M.2 (2280) PCIe Gen 4 NVMe 1.4 SSD / Solid State Drive with Heatsink

SanDisk Optimus GX PRO 850X 4TB NVMe SSD with Heatsink

The SanDisk Optimus GX PRO 850X 4TB NVMe SSD with Heatsink is an ultra-high-capacity, high-performance internal storage solution engineered to meet the demands of gaming enthusiasts, professional content creators and high-end computing workloads. Built on a PCIe 4.0 ×4 NVMe 1.4 interface, this M.2 2280 SSD pairs SanDisk TLC 3D NAND with nCache 4.0 technology to deliver exceptional sequential and random throughput suited to large file transfers, game loading acceleration, workstation data sets and multitasking environments. With a substantial 4TB capacity, the drive provides ample room for vast game libraries, multi-gigabyte media projects, virtualisation workloads and extensive data collections without reliance on external storage. The integrated heatsink enhances thermal management, enabling sustained peak performance under heavy workloads while reducing the risk of throttling during prolonged transfers or active gameplay. Designed for durability and long-term reliability, the Optimus GX PRO 850X 4TB SSD also includes SanDisk Dashboard support and a 5-year limited warranty, making it an ideal choice for performance-oriented desktops, laptops and creative systems.

High-Speed PCIe 4.0 Performance

The Optimus GX PRO 850X SSD leverages a PCIe 4.0 ×4 NVMe 1.4 controller and cache architecture to achieve high sequential throughput, capable of up to 7,300 MB/s read and up to 6,600 MB/s write speeds, ideal for large file movement, game load optimisation and media editing tasks. Its rapid random performance supports responsive system behaviour under demanding workloads, including complex project files, multi-application tasking and real-time asset streaming, while the inclusion of the integrated heatsink helps maintain maximum performance for longer periods by improving heat dissipation during intensive use.

Massive Capacity and Storage Versatility

With a full 4TB storage capacity, the Optimus GX PRO 850X SSD enables users to store and access extensive content libraries without frequent file housekeeping or the need for multiple drives. Whether housing thousands of games, high-resolution video projects, virtual machine images or large datasets, this substantial capacity combined with high NVMe throughput maintains system responsiveness and reduces reliance on slower external media.

Reliability, Endurance and Security

Engineered with enterprise-grade SanDisk TLC 3D NAND and advanced caching technology, this SSD is optimised for heavy write workloads and sustained use. The drive supports TCG Opal 2.01 data-at-rest encryption for enhanced data security and integrates with SanDisk Dashboard software for health monitoring, performance tuning and features such as migration tools. With robust construction and a long usable lifespan backed by a 5-year limited warranty, the Optimus GX PRO 850X with heatsink provides confidence for demanding gaming and productivity environments.

Platform Support and Compatibility

The Optimus GX PRO 850X SSD with heatsink is compatible with PCIe 4.0 systems and is also backwards compatible with PCIe 3.0 hosts, ensuring broad hardware integration in desktops, high-performance laptops and workstations with M.2 2280 slots. It supports Microsoft DirectStorage, helping streamline game asset loading and reduce storage bottlenecks in supported titles. Combined with its high capacity, thermal optimisation and sustained performance, this drive is a versatile choice for future-ready platforms in both gaming and professional settings.

• 4TB PCIe 4.0 ×4 NVMe 1.4 internal SSD.
• Integrated heatsink for enhanced thermal management.
• M.2 2280 form factor.
• Sequential read up to 7,300 MB/s and write up to 6,600 MB/s.
• SanDisk nCache 4.0 technology.
• SanDisk TLC 3D NAND.
• TCG Opal 2.01 data-at-rest encryption support.
• Support for Microsoft DirectStorage.
• Compatible with PCIe 4.0 and PCIe 3.0 hosts.
• 5-year limited warranty with SanDisk Dashboard software support.