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Rectangular green circuit board with gold edge connector and black memory chips

SanDisk

SanDisk Optimus GX PRO 850X 4TB internal SSD SDSP81400TAN-000E0

SKU CH-B8FZ-V7K2N MPN SDSP81400TAN-000E0

PCIe 4.0 x4 NVMe 1.4 M.2 2280 4TB drive with 7300 MBps read, 6600 MBps write and 2400 TBW endurance

  • Device TypeInternal Solid State Drive (SSD)
  • Form FactorM.2 2280-D5-M
  • Capacity4TB
  • Memory Components3D NAND TLC
  • InterfacePCI-Express 4.0 x4
  • ProtocolNVMe 1.4

Capacity 4TB

  • Sequential reads up to 7300 MBps accelerate game loads
  • Sequential writes up to 6600 MBps speed creative exports
  • Random 4K reads up to 1,200,000 IOPS keep multitasking responsive
  • 2400 TBW endurance protects long-term project storage
  • PCIe 4.0 x4 NVMe 1.4 interface fits M.2 2280 slots

Capacity and audience

The SanDisk Optimus GX PRO 850X is a 4TB internal SSD built on 3D NAND TLC. It targets gamers and creators who need fast sequential throughput and high endurance for large libraries or project files.

PCIe 4.0 upgrade path

This drive uses a PCI-Express 4.0 x4 interface with NVMe 1.4 protocol, replacing SATA SSDs or earlier PCIe 3.0 NVMe units. The jump is worth it when your workload demands sustained reads up to 7300 MBps and writes up to 6600 MBps.

Compatibility checklist

Verify your motherboard has an M.2 2280-D5-M slot wired for PCIe 4.0 x4 and that the BIOS supports NVMe 1.4. The module has no heatsink, so confirm your board or chassis provides adequate airflow for the 0°C to 85°C operating range.

Pluspunten

  • Sequential reads up to 7300 MBps accelerate game loads
  • Sequential writes up to 6600 MBps speed creative exports
  • Random 4K reads up to 1,200,000 IOPS keep multitasking responsive
  • 2400 TBW endurance protects long-term project storage
  • PCIe 4.0 x4 NVMe 1.4 interface fits M.2 2280 slots

Specificaties

BrandSanDisk
SeriesOptimus GX PRO 850X
ModelSDSP81400TAN-000E0
Device TypeInternal Solid State Drive (SSD)
Form FactorM.2 2280-D5-M
Capacity4TB
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)2400TB
MTBF1,750,000 hours
HeatSinkwithout HeatSink
Power Consumption (Idle)5 mW
Power Consumption (Active)Average Active Power Read: 8.0W
Average Active Power Write: 7.2W
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
Height3.88mm
Width22mm
Depth80mm
Weight8.6g
Verzendgewicht0.05 kg
Pakketafmetingen127 × 102 × 1 mm

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Does the M.2 2280-D5-M form factor fit a standard 22 mm wide motherboard slot?

Yes, the drive is 22 mm wide and 80 mm long, matching the standard M.2 2280 slot found on most desktop and laptop motherboards.

Is a heatsink required when installing this drive without a built-in heatsink?

The drive ships without a heatsink; many motherboards include an M.2 shield that acts as a heatsink, so attach the thermal pad to that shield during installation.

What endurance rating should I expect for the 4 TB model over its lifespan?

The 4 TB version is rated for 2400 TBW, meaning you can write up to 2.4 petabytes before the warranty endurance limit is reached.

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