Modern games are large, but 2 TB holds plenty of them at once without constantly deleting old ones. The PCIe 4.0 interface and reads of up to 7300 MB/s mean short load times. SanDisk lists support for Microsoft DirectStorage, which lets newer games stream data from the drive straight to the graphics card and speeds up loading even further.
The 2 TB model writes at up to 6600 MB/s, which speeds up saving and exporting large video files. In 4K random reads it reaches up to 1.2 million IOPS and up to 1.1 million in random writes, while SLC caching, SanDisk nCache 4.0, accelerates short write bursts. The system stays quick even when video renders in the background while several programs are open.
The drive is rated for 1200 TBW: SanDisk expects a total of 1200 terabytes to be written over its lifetime, twice as much as the 1 TB model in the same series. Mean time between failures is 1,750,000 hours, and the memory is TLC 3D NAND. That headroom suits daily video editing and photo processing, where the drive is written to constantly.
This version is a bare M.2 2280 board measuring 22 × 80 × 2.38 mm and weighing 7.5 g, so it fits a laptop M.2 slot and, in a desktop, sits under the motherboard's own cooling plate. Average power draw is 7.5 W reading and 7 W writing, and 0.005 W in sleep. The operating range is 0–85 °C. Supported systems are Windows 10 and Windows 11.
The included Acronis True Image software clones your old drive, Windows and programs included, onto the new one without reinstalling the system. The downloadable SanDisk Dashboard app (Windows only) updates firmware, shows drive health and switches on Game Mode. Hardware encryption to the TCG Opal 2.0 standard protects your data even if the drive ends up in the wrong hands.
Gamers whose library no longer fits on a smaller drive; laptop owners who want to swap a slow or small drive for a larger, faster one and move the system over easily; video editors and photographers who value write speed and 1200 TBW endurance; and anyone building a new PCIe 4.0 computer.
| Brand | SANDISK |
|---|---|
| Model name | Optimus GX PRO 850X |
| Interface | PCI Express 4.0 |
| TBW rating | 1200 |
| Component for | PC/Laptop |
| Operating shock | 1500 |
| Random read (4KB) | 1200000 |
| Random write (4KB) | 1100000 |
| Operating vibration | 5 |
| Non-operating vibration | 4.9 |
| PCI Express interface data lanes | x4 |
| Mean time between failures (MTBF) | 1750000 |
| Warranty | 5 years |
| EAN | 619659231965 |
| Memory type | TLC 3D NAND |
|---|
| SSD capacity | 2000 GB |
|---|---|
| SSD form factor | M.2 |
| NVMe | Yes |
| M.2 SSD size | 2280 (22 x 80 mm) |
| NVMe version | 1.4 |
| Storage temperature (T-T) | -40 - 85 |
| Security algorithms | TCG Opal 2.0 |
|---|
| Bundled software | Acronis True Image |
|---|---|
| Hardware encryption | Yes |
| Windows operating systems supported | Windows 10/Windows 11 |
| Power consumption (sleep) | 0.005 |
|---|---|
| Average power consumption (read) | 7.5 |
| Average power consumption (write) | 7 |
| Operating temperature (T-T) | 0 – 85 °C |
|---|---|
| Read speed | 7300 |
| Write speed | 6600 |
| Width | 22 mm |
|---|---|
| Depth | 80 mm |
| Height | 2.38 mm |
| Weight | 7.5 g |
If the laptop has an M.2 2280 slot with NVMe support, yes. The drive has no heatsink and is only 2.38 mm thick; SanDisk lists desktops and laptops as intended uses.
For this version the manufacturer does not specify PS5 compatibility, and the drive has no heatsink.
Yes, Acronis True Image is included, which transfers the contents of your old drive, system included, to the new one.
Yes, a PCIe 4.0 NVMe drive also works in a PCIe 3.0 M.2 slot, but speed is limited by the slot's bandwidth. The full 7300 MB/s is available in a PCIe 4.0 slot.
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