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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

  • Total capacity2 TB
  • Sequential read speedUp to 7,300 MB/s
  • Sequential write speedUp to 6,600 MB/s
  • Interface typePCI-Express 4.0 x4
  • Form factorM.2 2280-S3-M
  • Product typeInternal Solid State Drive (SSD)

Capacity 2TB

  • 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.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $378.99
Pricier than about 74% of the 1,994 comparable items (median $180.49).
Total capacity 2 TB
Higher than about 70% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 7,300 MB/s
Higher than about 87% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $189.50 per TB
Pricier than about 58% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSanDisk
Product lineOptimus GX PRO 850X
Model nameSDSP81200TAN-000E0
Total capacity2 TB
Product typeInternal Solid State Drive (SSD)
Performance
Sequential read speedUp to 7,300 MB/s
Sequential write speedUp to 6,600 MB/s
Random read (4K)Up to 1,200,000 IOPS
Random write (4K)Up to 1,100,000 IOPS
Storage
NAND flash type3D NAND TLC
Write endurance1200 TB
Connectivity
Connection protocolNVMe 1.4
Ports & slots
Interface typePCI-Express 4.0 x4
Power
Idle power draw5 mW
Active power drawAverage Active Power Read: 7.5 W
Average Active Power Write: 7.0 W
Size & build
Form factorM.2 2280-S3-M
Heat sinkWithout HeatSink
Overall height2.38 mm
Overall width22 mm
Product depth80 mm
Product weight7.5g
Shipping weight0.05 kg
Package size127 × 102 × 1 mm
Environment & compliance
Operating temperature range0 °C to 85 °C
Storage temperature range-40 °C to 85 °C
Max shock tolerance1,500G @ 0.5 ms half-sine
Vibration toleranceOperating Vibration: 5 gRMS, 10-2000 Hz, 3 axes
Non-operating Vibration: 4.9 gRMS, 7-800 Hz, 3 axes
More details
Mean time between failures1,750,000 h

Other versions of this model

5 more in the same range

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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