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SanDisk Optimus GX PRO 850X 4 TB M.2 2280 PCIe 4.0 x4 NVMe SSD, Without Heatsink

Brand:
Sandisk
SanDisk Optimus GX PRO 850X 4 TB M.2 2280 NVMe SSD without heatsink
SanDisk Optimus GX PRO 850X 4 TB M.2 2280 PCIe 4.0 x4 NVMe SSD, Without Heatsink
€1478.56 inc. VAT
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SDSP81400TAN-000E0
€1,242.49 €1,380.54
€1,478.56 inc. VAT
Ships from EU stock: 5 item(s)
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Product Code
CR07876
EAN Code
0619659231958
Manufacturer
Sandisk

Quick Specs

Capacity / format
4 TB · M.2 2280
Sequential read / write
Up to 7300 / 6600 MB/s
Interface / cache
PCIe 4.0 x4 · DRAM
Endurance / cooling
2400 TBW · No heatsink
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SanDisk Optimus GX PRO 850X 4 TB SSD

4 TB · M.2 2280Up to 7300 / 6600 MB/sPCIe 4.0 x4 · DRAM

The 4 TB Optimus GX PRO 850X adds fast internal storage for game libraries, applications and project files in a compatible PC or laptop. This is the bare-drive version, intended for a suitable system cooling arrangement. It combines PCIe 4.0 x4 NVMe 1.4, TLC NAND and nCache 4.0, with manufacturer sequential maxima of 7300 MB/s read and 6600 MB/s write.

Compatibility — check before buying:
Confirm a PCIe NVMe M.2 2280 slot, the supported drive capacity and 3.88 mm board-height clearance. A SATA-only M.2 slot is not suitable. Peak speeds require a suitable host; older compatible PCIe links reduce available bandwidth.

Key Features

 
Performance for this capacity
This 4 TB configuration is rated up to 1.2M read and 1.1M write IOPS, alongside 7300/6600 MB/s sequential read/write. These are internal-test maxima, rather than sustained rates for every transfer.
 
Cache and NAND
Onboard DRAM works with nCache 4.0 and TLC 3D NAND.
 
Cooling and installation
No heatsink is supplied. Check the device service guide and its cooling arrangement before replacing the existing drive.

Technical Specifications

Identification
Brand SanDisk
Model / MPN SDSP81400TAN-000E0
EAN / GTIN 0619659231958
Storage and interface
Capacity 4 TB (decimal; usable capacity is lower)
Form factor M.2 2280-D5-M
Interface / protocol PCIe 4.0 x4 · NVMe 1.4
PCIe backward compatibility PCIe 3.0 x4/x2/x1; PCIe 2.0 x4/x2/x1, with reduced bandwidth
NAND SanDisk TLC 3D NAND
DRAM / host memory Onboard DRAM
SLC cache SanDisk nCache 4.0
DirectStorage Supports Microsoft DirectStorage games; compatible host/software required
Performance and endurance
Sequential read / write (1 MB) Up to 7300 / 6600 MB/s; QD8, 1 thread
Random read / write (4 KB) Up to 1.2M / 1.1M IOPS; QD32, 16 threads
Performance conditions Manufacturer internal testing; varies with host, workload, capacity and other factors
Endurance 2400 TBW; JEDEC client workload JESD219
MTTF reference Up to 1.75 million hours; Telcordia SR-332, GF, 25°C statistical estimate, not individual lifespan or warranty
Power and security
Average active read / write power 8 / 7.2 W
Power measurement conditions IOMeter 1.1.0, separate burst sequential read/write, 10-second moving average; varies with setup and firmware
Sleep power (PS4) 5 mW
Security TCG Opal 2.01 data-at-rest encryption; BIOS or third-party software required to enable
Physical and environmental
Heatsink Not included
Dimensions (L × W × H) 80 × 22 × 3.88 mm
Weight 8.6 g
Dimensional / weight tolerance Length/width ±0.15 mm; weight ±1 g
Operating temperature 0°C to 85°C, as reported by the drive, not ambient; package rated to 60°C
Non-operating temperature −40°C to 85°C; does not guarantee data retention
Operating vibration 5 gRMS, 10–2000 Hz, 3 axes
Non-operating vibration 4.9 gRMS, 7–800 Hz, 3 axes
Shock 1500 G at 0.5 ms, half-sine
Compatibility, software and coverage
Manufacturer-listed system requirements Windows 10+; PCIe NVMe M.2 2280 slot
Dashboard SanDisk Dashboard download, Windows only; health, firmware and Game Mode
Migration software Acronis True Image for SanDisk: 5-year compatible-drive licence; redeem within 90 days; download, installation, admin privileges and possibly account required; offer terms apply
Manufacturer limited warranty 5 years or 2400 TBW limit, whichever occurs first; regional terms apply
Compliance BSMI, CAN ICES-3(B)/NMB-3(B), CB-Scheme, CE, FCC, KCC, Morocco, RCM, TÜV, UL, VCCI, UKCA; RoHS
Package contents 1 × SSD

What's in the Box

1 × SanDisk Optimus GX PRO 850X SSD

What Will Not Work

A SATA-only slot or a mounting position for a different M.2 length will not suit this drive.

Frequently Asked Questions

Does this fit a SATA M.2 slot?
It requires a PCIe NVMe slot supporting an 80 mm M.2 2280 drive. The M.2 connector shape alone does not establish SATA/NVMe compatibility.
Is a heatsink supplied?
No. This SKU is the bare-drive version, 3.88 mm high. Use the cooling arrangement specified by your system manufacturer.
Will every transfer reach the rated speed?
No. The published figures are maxima under the stated test workloads. Host bandwidth, file sizes, drive state and workload affect results; the endurance limit also forms part of the limited warranty.
Singular Expert Insight
Choose the cooling assembly and physical format before comparing peak speed. If your motherboard already has an M.2 cooler, the bare drive can fit that arrangement after its dimensions are checked. Compare the alternate Optimus configuration

Buyer’s Guide

Buy it if

You want 4 TB NVMe storage and have verified the physical fit.

Skip it if

Your device requires a different drive size or cooling assembly.

Also consider

Compare the linked alternate configuration by format, capacity and heatsink.

Features - Sandisk - SDSP81400TAN-000E0

Form Factor
  • Internal
Interface
  • M.2
More Details
Product Code
CR07876
EAN Code
0619659231958
Manufacturer
Sandisk
Technical specifications
Capacity
4TB
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