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Green M.2 2280 SSD circuit board with gold edge connector and black controller chip

SanDisk

SanDisk Optimus GX PRO 850X 2TB internal SSD SDSP81200TAN-000E0

SKU CH-2X88-M60C2 MPN SDSP81200TAN-000E0

PCIe 4.0 NVMe M.2 2280 drive delivers 7300 MB/s reads, 6600 MB/s writes and 1200 TBW endurance for gaming and creative workloads

  • Device TypeInternal Solid State Drive (SSD)
  • Form FactorM.2 2280-S3-M
  • Capacity2TB
  • Memory Components3D NAND TLC
  • InterfacePCI-Express 4.0 x4
  • ProtocolNVMe 1.4

Capacity 2TB

  • 1TB
  • 1TB w/ Heatsink
  • 2TB
  • 2TB w/ Heatsink
  • 4TB
  • 4TB w/ Heatsink
  • 8TB
  • 8TB w/ Heatsink

Struck-through versions exist but are not stocked here.

  • Sequential read up to 7300 MBps for rapid level loading
  • Sequential write up to 6600 MBps to accelerate creative workflows
  • Random read up to 1200000 IOPS for snappy multitasking
  • Random write up to 1100000 IOPS for responsive game sessions
  • 1200 TBW endurance rating for long-term reliability

2TB PCIe 4.0 NVMe drive

The SanDisk Optimus GX PRO 850X is an M.2 2280-S3-M internal SSD with 2TB capacity. It uses PCI-Express 4.0 x4 and NVMe 1.4 to reach sequential read speeds up to 7300 MBps and sequential write speeds up to 6600 MBps. The drive employs 3D NAND TLC and is rated for 1200TB written endurance.

Gamers and creators needing speed without a heatsink

This model suits gaming PCs, creator workstations and laptops that can cool an M.2 drive through the motherboard or chassis. It supports Microsoft DirectStorage and TCG Opal v2.01 encryption for protected data at rest. Builds that rely on a drive-mounted heatsink or that cannot dissipate up to 7.5W active power should consider a different SKU.

Check motherboard slot, cooling and OS

Verify the board provides an M.2 2280 slot wired for PCIe 4.0 x4 and NVMe 1.4. Confirm the platform can keep the drive within the 0°C to 85°C operating range without an integrated heatsink. The SanDisk Dashboard utility for drive health and Game Mode runs on Windows only.

Highlights

  • Sequential read up to 7300 MBps for rapid level loading
  • Sequential write up to 6600 MBps to accelerate creative workflows
  • Random read up to 1200000 IOPS for snappy multitasking
  • Random write up to 1100000 IOPS for responsive game sessions
  • 1200 TBW endurance rating for long-term reliability

Specifications

BrandSanDisk
SeriesOptimus GX PRO 850X
ModelSDSP81200TAN-000E0
Device TypeInternal Solid State Drive (SSD)
Form FactorM.2 2280-S3-M
Capacity2TB
Memory Components3D NAND TLC
InterfacePCI-Express 4.0 x4
ProtocolNVMe 1.4
Max Sequential ReadUp to 7300 MBps
Max Sequential WriteUp to 6600 MBps
4KB Random ReadUp to 1,200,000 IOPS
4KB Random WriteUp to 1,100,000 IOPS
Terabytes Written (TBW)1200TB
MTBF1,750,000 hours
HeatSinkwithout HeatSink
Power Consumption (Idle)5 mW
Power Consumption (Active)Average Active Power Read: 7.5W
Average Active Power Write: 7.0W
Operating Temperature0°C ~ +85°C
Storage Temperature-40°C ~ +85°C
Max Shock Resistance1,500G @ 0.5 ms half-sine
Max Vibration ResistanceOperating Vibration: 5 gRMS, 10-2000 Hz, 3 axes
Non-operating Vibration: 4.9 gRMS, 7-800 Hz, 3 axes
Height2.38mm
Width22mm
Depth80mm
Weight7.5g
Shipping weight0.05 kg
Package size127 × 102 × 1 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What motherboard slot does the M.2 2280 form factor require?

The drive fits an M.2 2280-S3-M slot keyed for PCIe 4.0 x4 NVMe 1.4 operation.

Will the PCIe 4.0 x4 interface run at full speed on a PCIe 3.0 motherboard?

The SSD is backward compatible and will operate at PCIe 3.0 x4 speeds on an older platform.

How can I confirm the sequential read speed reaches 7300 MBps after installation?

Run a benchmark such as CrystalDiskMark on Windows; the sequential read result should approach 7300 MBps.

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