SANDISK Optimus GX PRO 850X Heatsink

4000 GB, M.2 2280
CHF385.–/1TB
Delivered between Thu, 9.7. and Mon, 10.8.
free shipping

Memory Size4

Product details

The SanDisk SSD Optimus GX Pro 850X is a powerful M.2 NVMe SSD with a storage capacity of 4 TB. It offers impressive read and write speeds of up to 7300 MB/s and 6600 MB/s, making it ideal for demanding applications and gaming. This SSD is equipped with a heatsink that ensures efficient cooling and optimizes performance under load. With a high IOPS performance of up to 1,200,000 for read operations and 1,100,000 for write operations, the Optimus GX Pro 850X is excellent for multitasking and data-intensive tasks. The SSD utilizes advanced TLC NAND technology and supports the NVMe protocol, leading to fast data transfer and improved system responsiveness. Its long lifespan of 1,750,000 hours MTBF and high TBW of 2400 TB make it a reliable choice for users who value performance and durability.

  • Maximum random 4K read performance of 1,200,000 IOPS
  • Maximum random 4K write performance of 1,100,000 IOPS
  • Support for SSD TRIM for performance optimization
  • Long lifespan with 1,750,000 hours MTBF
  • High TBW of 2400 terabytes for intensive use.

Key specifications

Protocol
NVMe
Read transfer speed
7300 MB/s
Write transfer speed
6600 MB/s
Max. random 4K read
1200000 IOPS
Max. random 4K write
1100000 IOPS

General information

Item number
66957391
Manufacturer
SANDISK
Category
SSD
Manufacturer no.
SDSP81400TAH-000E0
Release date
22.1.2026
External links

Data storage properties

SSD type
M.2 SSD
Form factor
M.2 2280
Storage capacity
4000 GB
Protocol
NVMe
Read transfer speed
7300 MB/s
Write transfer speed
6600 MB/s
Memory type (NAND)
TLC
Max. random 4K read
1200000 IOPS
Max. random 4K write
1100000 IOPS
Storage Cooling
with heatsink
Scope of application
Gaming
Max. TBW
2400 TB
MTBF
1750000 h

Power supply

Power consumption
8 W

Voluntary climate contribution

CO₂ emissions
95.84 kg
Climate contribution
CHF 2.28

Scope of delivery

Scope of delivery
Acronis True Image

Product dimensions

Length
8 cm
Width
2.40 cm
Height
1.03 cm
Weight
30.40 g

30-day right of return
36 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «SSD» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 2.WaveShare
    0.3 %
  • 5.Samsung
    0.4 %
  • 6.SANDISK
    0.5 %
  • 7.Crucial
    0.6 %
  • 7.Dell
    0.6 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 14.Lexar
    3 days
  • 14.Samsung
    3 days
  • 14.SANDISK
    3 days
  • 14.Synology
    3 days
  • 18.Corsair
    7 days

Return rate

How often is a product of this brand in the «SSD» category returned?

Source: Digitec Galaxus
  • 11.WD
    2.2 %
  • 12.Raspberry Pi
    2.3 %
  • 13.SANDISK
    2.4 %
  • 14.Crucial
    2.5 %
  • 15.Micron
    2.8 %
Source: Digitec Galaxus