SanDisk Optimus GX PRO 850X 2TB PCIe 4.0 NVMe M.2 SSD with Heatsink

SANDISK Optimus™ GX PRO 850X PCIe® 4.0 NVMe™ SSD with Heatsink, 2TB, Read 7,300MB/s Write 6,600MB/s, 5 Yr Warranty

The SanDisk Optimus GX PRO 850X 2TB PCIe 4.0 NVMe M.2 SSD delivers sequential read speeds of up to 7,300 MB/s and sequential write speeds of up to 6,600 MB/s to handle demanding gaming and creative workloads. This drive pairs high-speed PCIe Gen4 x4 architecture with a pre-installed heatsink to maintain performance under sustained read and write operations.

Sustained PCIe Gen4 performance with dedicated DRAM caching

Built on the NVMe 1.4 protocol, this drive features the WD Black G2 controller and SanDisk BiCS TLC 3D NAND to maximise bandwidth efficiency. It incorporates a dedicated DRAM cache alongside SanDisk nCache 4.0 SLC caching technology, which helps maintain high-speed transfers even when handling massive file sizes. With random read performance reaching up to 1,200,000 IOPS and random write speeds up to 1,100,000 IOPS, the drive ensures rapid responsiveness for system booting, application loading, and heavy multitasking. This combination of high random I/O and dedicated cache reduces latency, making it ideal for processing large databases or loading complex game assets.

Integrated heatsink for stable thermal management

To prevent thermal throttling during intensive operations, the drive comes equipped with a custom-engineered heatsink. This low-profile thermal solution fits within the standard M.2 2280 form factor, drawing heat away from the controller and NAND flash. The heatsink helps the drive operate safely within its 0°C to 85°C temperature range, ensuring consistent performance during extended gaming sessions, 3D rendering, or large file transfers where heat build-up would otherwise degrade transfer speeds.

Hardware-grade security and long-term endurance

Designed for long-term reliability, the drive features an endurance rating of 1200 TBW (Terabytes Written) and a Mean Time Between Failures (MTBF) of 1,750,000 hours. For users handling sensitive professional data, the drive supports TCG Opal v2.01 hardware-based encryption. This self-encrypting drive capability secures your data at the hardware level, protecting your digital assets without compromising the system's processing performance or adding software overhead.

Broad system compatibility and five-year warranty protection

The M.2 2280 form factor and PCIe Gen4 x4 interface ensure broad compatibility with modern desktop motherboards and compatible gaming consoles that support physical heatsinks. Backed by a five-year warranty, this SSD offers a durable storage upgrade path that stands up to years of daily write cycles, providing both peace of mind and sustained high-speed storage capacity.

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