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SANDISK 1TB Optimus™ GX PRO 850X PCIe® 4.0 x4 M.2 2280 NVMe™ SSD - SDSP81100TAN-000E0

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  • 850X 1TB
  • 850X 1TB w/ Heatsink
  • 850X 2TB
  • 850X 2TB w/ Heatsink
  • 850X 4TB
  • 850X 4TB w/ Heatsink
  • 850X 8TB w/ Heatsink
  • CHAMPION YOUR GAME SESSION AND CREATIVE WORKFLOW. Boasting PCIe® Gen 4.0 Sequential Read/Write speeds up to 7,300/6,300MB/s (1TB), your SSD enhances your game sessions and your creative workflow.
  • STAY IN THE GAME. Experience seamless game sessions and smooth multitasking with Random Read/Write speeds up to 1.2M/1.2M IOPS (8TB model) and integrated SANDISK® nCache™ 4.0 technology. Supports Microsoft® DirectStorage games.
  • NO NEED TO DELETE. Stop deleting to make room for more games or applications. With capacities up to 8TB and trusted SANDISK® BiCS TLC 3D NAND, you’ll have room for more.
  • DESIGNED WITH THE CREATOR IN MIND. With up to 4,800 TBW (8TB model) endurance rating, your drive stays by your side. Help protect your digital assets with TCG Opal v2.01 data-at-rest encryption.
  • YOU CAN DO MORE WITH SANDISK® SOFTWARE. Download the SANDISK® Dashboard application (Windows® only) to help keep your drive in peak shape. Or turn on Game Mode to transform your gaming experience.
  • REST EASY. Your hard work is covered with Sandisk’s 5-year limited warranty for peace of mind
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Overview
Specs
Reviews
SANDISK Optimus™ GX PRO 850X NVMe™ SSD
SANDISK Optimus™ GX PRO 850X NVMe™ SSD
Notes:

(1) 1MB/s = 1 million bytes per second. IOPS = input/output operations per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity, and other factors.

(2) 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.

(3) TBW (terabytes written) values calculated using JEDEC client workload (JESD219) and vary by product capacity.

(4) Check system BIOS for support or 3rd party software required to enable.

(5) Available for download; see the Sandisk website for more details.

SANDISK, the SANDISK logo, SANDISK Optimus, and nCache are registered marks or marks of Sandisk Corporation or its affiliates in the U.S. and/or other countries. Acronis and True Image are registered marks of Acronis International GmbH in the United States and other countries. The NVMe word mark is a mark of NVM Express, Inc. PCIe is a registered mark of PCI-SIG. Windows, Microsoft and DirectStorage are registered marks of the Microsoft group of companies. All other marks are the property of their respective owners. Product specifications subject to change without notice. Pictures shown may vary from actual products.

2026 Sandisk Corporation or its affiliates. All rights reserved.

Elite performance for championsChampion your gaming sessions and creative workflows with the SANDISK Optimus GX PRO 850X NVMe SSD. Load levels fast and push through your creative workflow with PCIe 4.0 Sequential Read/Write speeds up to 7, 300/6, 600 MB/s (2TB and 4TB models). With Random Read/Write speeds up to 1.2M / 1.2M IOPS (8TB model) and integrated SANDISK nCache 4.0 technology, experience seamless game sessions and smooth multitasking. Integrated SANDISK Optimus heatsink helps your drive minimize throttle for those intense game or work sessions. Store your large games and digital assets with capacities up to 8TB on M.

2 2280 built with trusted SANDISK BiCS TLC 3D NAND. Engineered for video editing with an endurance rating of up to 4, 800 TBW (8TB model). Help protect your projects and data with TCG Opal v 2.01 data-at-rest encryption. With Microsoft DirectStorage support, you're ready for future games. Ideal for gaming PCs, creator PCs, and laptops. Dominate your game session and creative projectsLoad levels fast and push through your creative workflow with PCIe 4.0 Sequential Read/Write speeds up to 7, 300/6, 600 MB/s (2TB and 4TB models). This SSD is ready for anything from blazing fast video editing to intense gaming sessions.

Stay in the gameWith Random Read/Write speeds up to 1.2M / 1.2M IOPS (8TB model) and integrated SANDISK nCache 4.0 technology, experience seamless game sessions and smooth multitasking. Get ready for future games supporting Microsoft DirectStorage. No need to deleteStop deleting to make room for more games and applications. With capacities up to 8TB powered by trusted SANDISK BiCS TLC 3D NAND on M. 2 2280, you'll have room for more. Designed with the creator in mindUp to a 4, 800 TBW (8TB model) endurance rating means your drive stays by your side through rigorous content creation workflows.

You can also help protect your digital assets with TCG Opal v 2.01 data-at-rest encryption. You can do more with SANDISK softwareThe downloadable SANDISK Dashboard application (Windows only) keeps your drive up to date, monitors its health, and enables Game Mode to transform your gaming experience. Plus, Acronis True Image for SANDISK software helps you migrate to your new drive. Heatsink for cool operation and blazing speedsEnjoy sustained high performance thanks to the integrated heatsink that's not only eye-catching, but also helps your rig maintain peak performance through intense workloads. Compatible with PS5 and PS5 Pro consoles.

Warranty & Returns

Warranty, Returns, And Additional Information

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  • Warranty Notice:

    This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.

Manufacturer Contact Info

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The SanDisk Optimus GX PRO 850X is a 1TB M.2 2280 PCIe 4.0 x4 NVMe SSD with sequential read speeds up to 7,300 MB/s and write speeds up to 6,300 MB/s, suited to gamers and creators upgrading a compatible system for fast storage.

Recommended For

  • PC gamers building or upgrading a system with a compatible PCIe 4.0 M.2 slot who want a fast drive for Windows and their regularly played games; independent testing of the SN850X lineage found strong gaming-storage benchmark performance.
  • Video editors and other creators who work from a compatible desktop or laptop and want responsive local storage for active projects, media assets, and application files; SanDisk specifically positions the drive for creative workflows and video editing.
  • Laptop owners upgrading a system with an available M.2 2280 NVMe slot who want a high-speed internal drive and have a suitable way to manage SSD heat; SanDisk lists laptops among the intended systems, and this version does not include a heatsink.

Spec Summary

AttributeValue
Best ForInternal storage for desktop and laptop use, including gaming, business, and personal workloads
Capacity And NAND1TB capacity with 3D TLC NAND flash
Interface And Form FactorM.2 2280 internal SSD using PCIe 4.0 x4 and NVMe 1.4
Read And Write PerformanceSequential speeds up to 7,300 MB/s read and 6,300 MB/s write; 4KB random performance up to 800,000 IOPS read and 1,100,000 IOPS write
Endurance And ReliabilityRated for 600TB written and 1,750,000 hours MTBF
Power And Operating ConditionsIdle power consumption of 5mW; average active power of 7.2W reading and 6.2W writing. Operating temperature: 0°C to 85°C; storage temperature: -40°C to 85°C
Shock And Vibration ResistanceShock resistance up to 1,500G at 0.5ms half-sine; operating vibration 5gRMS and non-operating vibration 4.9gRMS, each across the specified frequency ranges and three axes
Physical Specifications80 × 22 × 2.38mm; 7.5g; no heatsink
CompatibilityListed for desktop and laptop devices, and Sony PlayStation 5 and Microsoft Xbox Series S console models
Model IdentifiersSanDisk Optimus GX PRO 850X; model SDSP81100TAN-000E0