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SanDisk Optimus GX PRO 850X M.2 2280-S3-M 2TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81200TAH-000E0
- CHAMPION YOUR GAME SESSION AND CREATIVE WORKFLOW. Boasting PCIe Gen 4.0 Sequential Read/Write speeds up to 7,300/6,600 MB/s[2] (2TB[1] and 4TB[1] models), your SSD enhances your game sessions and your creative workflow.
- STAY IN THE GAME. Experience seamless game sessions and smooth multitasking with Random Read/Write speeds up to 1.2M/1.2M IOPS[2] (8TB[1] model) and integrated SANDISK nCache 4.0 technology. Supports Microsoft DirectStorage games.
- NO NEED TO DELETE. Stop deleting to make room for more games or applications. With capacities up to 8TB[1] and trusted SANDISK BiCS TLC 3D NAND, you’ll have room for more.
- COOL OPERATION, BLAZING SPEEDS. Includes the SANDISK Optimus heatsink with integrated programmable RGB LED to help your drive minimize throttle and maintain peak performance.
- DESIGNED WITH THE CREATOR IN MIND. With up to 4,800 TBW[3] (8TB[1] model) endurance rating, your drive stays by your side. Help protect your digital assets with TCG Opal v2.01 data-at-rest encryption.[
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Overview
Specs
Reviews
Overview
The SanDisk Optimus GX PRO 850X is a 2TB internal solid state drive for systems using an M.2 2280-S3-M form factor and PCI-Express 4.0 x4 interface.
Key Features
- 2TB storage capacity
- M.2 2280-S3-M form factor
- PCI-Express 4.0 x4 interface
- NVMe 1.4 protocol
- Integrated HeatSink
- No DRAM (SLC) cache
Performance
Maximum sequential performance reaches up to 7300 MBps read and up to 6600 MBps write. Maximum 4KB random performance reaches up to 1,200,000 IOPS read and up to 1,100,000 IOPS write.
Design
The drive measures 80mm deep, 23mm wide, and 8.9mm high, with a weight of 24g. It includes a HeatSink.
Connectivity & Compatibility
The drive uses a PCI-Express 4.0 x4 interface and NVMe 1.4 protocol in an M.2 2280-S3-M form factor.
Reliability & Durability
The drive is rated for 1200TB Terabytes Written and has an MTBF of 1,750,000 hours. Operating temperature is 0°C ~ +85°C, while storage temperature is -40°C ~ +85°C. Maximum shock resistance is 1,500G @ 0.5 ms half-sine.
Operating vibration is 5 gRMS, 10-2000 Hz, 3 axes. Non-operating vibration is 4.9 gRMS, 7-800 Hz, 3 axes.
Specifications
- Brand: SanDisk
- Series: Optimus GX PRO 850X
- Model: SDSP81200TAH-000E0
- Device Type: Internal Solid State Drive (SSD)
- Form Factor: M.2 2280-S3-M
- Capacity: 2TB
- Memory Components: 3D NAND TLC
- Interface: PCI-Express 4.0 x4
- Protocol: NVMe 1.4
- Cache: No DRAM (SLC)
- Max Sequential Read: Up to 7300 MBps
- Max Sequential Write: Up to 6600 MBps
- 4KB Random Read: Up to 1,200,000 IOPS
- 4KB Random Write: Up to 1,100,000 IOPS
- Terabytes Written (TBW): 1200TB
- MTBF: 1,750,000 hours
- HeatSink: with HeatSink
- Power Consumption (Idle): 5 mW
- Power Consumption (Active): Average Active Power Read: 7.5W; Average Active Power Write: 7.0W
- Operating Temperature: 0°C ~ +85°C
- Storage Temperature: -40°C ~ +85°C
- Height: 8.9mm
- Width: 23mm
- Depth: 80mm
- Weight: 24g
Warranty & Returns
Warranty, Returns, And Additional Information
Return Policies*
- Return for refund within: 30 days
- Returns are subject to restocking fees and return shipping fees. Please click here to learn more about restocking fees and return shipping fees.
- This item is covered by Newegg.com's International Order Return Policy.
- Read full return policy for details.
- *Subject to applicable law
Warranty Notice:
This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-866-726-3475
- Support Website
- View other products from SanDisk
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The SanDisk Optimus GX PRO 850X is a 2TB M.2 2280 NVMe SSD with a heatsink and PCIe 4.0 x4 interface, offering sequential read speeds up to 7,300 MB/s and write speeds up to 6,600 MB/s. It suits gamers and creators seeking fast storage for compatible PCIe 4.0 systems.
Recommended For
- PC gamers expanding a desktop game library who want 2TB of fast PCIe 4.0 storage and shorter game-load waits; reviews of its SN850X predecessor found strong gaming benchmark results.
- PS5 owners adding internal game storage who need an M.2 2280 PCIe 4.0 drive with a heatsink; the GX PRO 850X heatsink version is described as fitting the console.
- Desktop users who regularly load or move large creative-project files and want high sequential read/write performance from a PCIe 4.0 SSD.
- Enthusiast PC builders upgrading a compatible M.2 PCIe 4.0 system who want a high-end 2TB drive with TLC flash, onboard DRAM, and a heatsink-equipped option.
Real-World Use Scenarios
- A PC gamer adding a dedicated library drive can keep more large games installed on the 2TB SSD and spend less time waiting on storage during launches, installs, and file transfers; load-time gains over another SSD may be modest.
- A video creator working with large project files can use the drive for active footage, project assets, or a scratch workspace, making large reads and writes feel more responsive when the rest of the system can keep up.
- A gamer or creator running several tasks at once can keep frequently used games and work files on one fast drive; the experience depends on the workload, and the drive will not remove CPU, memory, or network bottlenecks.
- A desktop builder installing a high-speed M.2 drive for extended gaming or creative sessions can use the included heatsink to help manage drive heat; check motherboard clearance and avoid stacking it under a second heatsink.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | 2TB internal NVMe storage for gaming, business, or personal use in compatible desktops and laptops; also listed as compatible with Sony PlayStation 5 |
| Capacity | 2TB |
| Interface And Form Factor | PCIe 4.0 x4 with NVMe 1.4, in an M.2 2280-S3-M form factor |
| NAND And Cache | 3D NAND TLC with no DRAM and SLC cache |
| Read And Write Performance | Sequential speeds up to 7,300 MB/s read and 6,600 MB/s write; 4KB random performance up to 1,200,000 IOPS read and 1,100,000 IOPS write |
| Endurance And Reliability | Rated for 1,200TB written and a 1,750,000-hour MTBF |
| Cooling | Includes a heatsink |
| Power Consumption | 5mW idle; average active power is 7.5W during reads and 7.0W during writes |
| Operating Environment And Durability | Operating temperature: 0°C to 85°C; storage temperature: −40°C to 85°C. Shock resistance up to 1,500G at 0.5ms; vibration resistance is specified for operating and non-operating conditions |
| Dimensions And Weight | 80 × 23 × 8.9mm; 24g |
| Model Identifiers | SanDisk Optimus GX PRO 850X; model SDSP81200TAH-000E0 |
Reference Q&A
Q: Is the Optimus GX PRO 850X a worthwhile upgrade from the WD_BLACK SN850X?
A: The 850X is the SanDisk-branded replacement for the WD_BLACK SN850X, not a clear speed upgrade based on their published 2TB-class sequential ratings: both are rated up to 7,300 MB/s read and 6,600 MB/s write. Choose the 850X when you want the current SanDisk-branded model; if you already own an SN850X, the available positioning and specifications do not establish a compelling performance reason to replace it.
Q: Should I get the GX PRO 850X or Samsung 990 PRO for a high-performance PCIe 4.0 PC?
A: Both are high-performance PCIe 4.0 NVMe SSDs, so choose based on the exact capacity, heatsink configuration, price, and warranty available to you. The 850X’s 2TB model is rated up to 7,300/6,600 MB/s sequential read/write and includes a heatsink in this listing; independent testing of the older SN850X, its predecessor, and the 990 PRO shows that real-world results vary by workload, rather than establishing one universal winner.
Q: Is the GX PRO 850X worth choosing over the Optimus GX 7100?
A: Both are PCIe 4.0 x4 M.2 2280 SSDs with similar advertised sequential speeds at 2TB: the 850X is rated up to 7,300/6,600 MB/s read/write, while the GX 7100 is rated up to 7,250/6,900 MB/s. Choose the 850X if its 2TB configuration, heatsink, or higher-tier GX PRO positioning suits your build; consider the GX 7100 if its price or laptop-and-handheld positioning better matches your needs. Compare the exact model’s heatsink and compatibility before buying.
Q: For a PS5, should I buy the GX PRO 850X or the GX PRO 850P?
A: Both models have heatsink-equipped versions and are listed by SanDisk as compatible with PS5 consoles. Choose the 850P if you want the officially licensed PS5/PS5 Pro model with a heatsink designed for the console’s M.2 slot. Choose the 850X if you prefer its gaming-PC and creator-workflow positioning; SanDisk also lists its heatsink version as PS5-compatible.
Q: Will this SSD fit my PC or laptop?
A: It fits a system with an available M.2 2280 slot that supports PCIe NVMe. Check the device’s documentation for slot compatibility, supported capacity, and clearance for this drive’s heatsink before buying.
Q: Will the heatsink fit in a laptop?
A: Not necessarily. This drive includes a heatsink and is 8.9 mm high, so confirm that the laptop has enough space before installing it; some laptop bays have limited clearance or their own cover and thermal pad.
Q: Can I use it in a PCIe Gen 3 M.2 slot?
A: It may work if the slot supports M.2 NVMe drives, but the connection will limit performance below this drive’s PCIe 4.0 x4 rated speeds. Confirm compatibility with the system or motherboard manufacturer.
Q: Is it suitable for gaming and large file transfers?
A: Its 2TB capacity and rated sequential speeds of up to 7,300 MB/s read and 6,600 MB/s write make it suitable for storage-heavy gaming and fast file transfers when used in a compatible PCIe 4.0 x4 system. Actual speeds depend on the host device and workload.
Q: Should I choose this 2TB drive over a 1TB Samsung 990?
A: Choose based on capacity, price, and warranty rather than the brand names alone. This model offers 2TB and up to 7,300 MB/s sequential reads; the Reddit discussion raises the 2TB SanDisk versus 1TB Samsung comparison but does not establish which is better in performance or reliability.
Q: Is the Optimus GX PRO 850X worth buying instead of an SN850X or a PCIe 5.0 drive?
A: It may make sense if its price is competitive and your system uses PCIe 4.0; the supplied specifications list up to 7,300 MB/s reads and 6,600 MB/s writes. Reddit discussion indicates that perceived value can depend on pricing and availability, so compare current prices rather than assuming a newer or rebranded model is automatically the better buy.