Disk SanDisk Optimus GX PRO 850X 1TB M.2 2280 PCIe 4.0 NVMe TLC 3D NAND - SDSP81100TAN-000E0

SanDisk Optimus GX PRO 850X 1TB is an internal NVMe PCIe 4.0 SSD aimed at mid-range to high-end configurations, where you seek a fast system and game disk without unnecessary extras like RGB. With up to 7300MB/s read and up to 6300MB/s write we are talking about a level that comfortably feeds modern CPUs and GPUs without serious storage bottleneck. The combination of TLC 3D NAND and DRAM cache provides stable performance even under longer loads, not just during short bursts. The form factor M.2 2280 makes it a direct drop-in for most modern motherboards and laptops with PCIe 4.0 M.2 slot.

What you get here: a fast NVMe 4.0 disk that handles massive games, heavy projects, and daily multitasking. The capacity of 1TB is sufficient for the OS, your main applications, and a stable library of games. Up to 800,000 IOPS at 4K random read and up to 1,100,000 IOPS at 4K random write mean very fast access to small files – exactly what shortens loading screens and speeds up work with projects with many assets. SanDisk nCache 4.0 SLC cache technology keeps speeds more stable during large file transfers, while TCG Opal 2.0 hardware encryption provides data protection (data-at-rest) without taxing the CPU. TBW 600 TB and MTBF 1,750,000 hours are serious indicators of durability for long-term use.

• PCIe NVMe 4.0 (M.2) interface – provides significantly higher bandwidth compared to SATA and is optimal for modern gaming and work systems.
• Read speed up to 7300MB/s – speeds up the loading of the operating system, games, and heavy applications, so waiting on loading screens is minimal.
• Write speed up to 6300MB/s – useful when copying large files, installing games, and working with videos, photos, and archives.
• 1TB capacity – a balanced spot between price and space, sufficient for a primary system disk plus a few large titles or work projects.
• TLC 3D NAND + DRAM cache – provides better endurance and consistent performance compared to more budget solutions without DRAM.
• Up to 800,000 / 1,100,000 IOPS (4K random read/write) – significantly reduces latency when accessing multiple small files and improves overall system responsiveness.
• TCG Opal 2.0 hardware encryption – protects the data on the disk (data-at-rest) without relying solely on software solutions.
• TBW 600 TB and MTBF 1,750,000 h – suitable for long-term, daily use, including installing/uninstalling many games and working with large files.
• Support for SanDisk Dashboard and Acronis True Image for SanDisk – facilitates monitoring the disk's health and migrating the system from an old drive.

This SSD is suitable for gaming configurations with PCIe 4.0, for a fast work machine for Windows 10+, and for users who want a combination of speed and reliability without chasing extreme capacities. It is suitable both as a system disk and as a primary game/library disk; it is rather overkill if you will use it only for basic browsing and office work.

The most sensible thing here is the combination of high PCIe 4.0 speeds, TLC 3D NAND, DRAM cache, and good TBW, plus bonuses like TCG Opal 2.0 and convenient software – exactly the type of M.2 SSD that you install and forget about storage issues for a long time.