SANDISK Optimus GX PRO 850X
4000 GB, M.2 2280Memory Size3
Storage Cooling2
Product details
The SanDisk SSD Optimus GX Pro 850X is a powerful M.2 NVMe SSD with a storage capacity of 4 TB, designed for use in PCs and laptops. It offers impressive read and write speeds of up to 7300 MB/s and 6600 MB/s, making it ideal for demanding applications and multitasking. With a high IOPS performance of up to 1,200,000 for read operations and 1,100,000 for write operations, this SSD ensures fast data processing and transfer. The compact M.2 2280 form factor allows for easy integration into modern systems, while the robust construction and high MTBF of 1,750,000 hours provide reliability and durability. The SSD also comes with Acronis True Image, which facilitates data backup and migration.
- Maximum TBW of 2400 terabytes for long-term use
- Low power consumption of only 8 watts during operation
- MTBF of 1,750,000 hours for increased reliability
- Includes Acronis True Image for easy data backup
- Optimized for high IOPS performance in random read and write operations.
Interface | PCIe |
Interface version | PCIe 4.0 |
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 |
Item number | 66957408 |
Manufacturer | SANDISK |
Category | SSD |
Manufacturer No. | SDSP81400TAN-000E0 |
Release date | 22.1.2026 |
SSD type | M.2 SSD |
Form factor | M.2 2280 |
Storage capacity | 4000 GB |
Interface | PCIe |
Interface version | PCIe 4.0 |
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 | without heatsink |
Scope of application | Gaming |
SSD Features | TCG Opal |
Max. TBW | 2400 TB |
MTBF | 1750000 h |
Power consumption | 8 W |
Country of origin | China |
Manufacturer commitment | SBTi |
CO₂ emissions | 95.84 kg |
Climate contribution | CHF 2.28 |
Length | 8 cm |
Width | 2.20 cm |
Height | 0.39 cm |
Weight | 8.60 g |
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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- 4.HP0.5 %
- 4.MSI0.5 %
- 4.SANDISK0.5 %
- 7.Crucial0.6 %
- 7.Emtec0.6 %
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- 12.Corsair3 days
- 12.Lexar3 days
- 12.Patriot3 days
- 12.SANDISK3 days
- 16.Seagate4 days
Return rate
How often is a product of this brand in the «SSD» category returned?
Source: Digitec Galaxus- 12.WD2.4 %
- 14.Crucial2.6 %
- 15.SANDISK3 %
- 15.Seagate3 %
- 17.Verbatim3.1 %