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SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAH-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 4TB internal solid state drive with an M.2 2280-D5-M form factor, PCI-Express 4.0 x4 interface, NVMe 1.4 protocol, and 3D NAND TLC memory components. It includes a HeatSink and delivers high sequential and random performance supported by the listed specifications.
Key Features
- 4TB storage capacity
- M.2 2280-D5-M form factor
- PCI-Express 4.0 x4 interface with NVMe 1.4 protocol
- Up to 7300 MBps sequential read and 6600 MBps sequential write
- 3D NAND TLC memory components
- HeatSink included
Performance
The drive provides a maximum sequential read speed of up to 7300 MBps and maximum sequential write speed of up to 6600 MBps. Rated 4KB random performance reaches up to 1,200,000 IOPS for read and up to 1,100,000 IOPS for write. Power consumption is 5 mW at idle, with average active power of 8.0W for read and 7.2W for write.
Design
The M.2 2280-D5-M drive measures 80mm in depth, 24mm in width, and 10.31mm in height. Weight is 30.4g. The drive includes a HeatSink.
Connectivity & Compatibility
The internal SSD uses a PCI-Express 4.0 x4 interface and NVMe 1.4 protocol in an M.2 2280-D5-M form factor.
Reliability & Durability
The drive is rated for 2400TB 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, and non-operating vibration is 4.9 gRMS, 7-800 Hz, 3 axes.
Specifications
- Brand: SanDisk
- Series: Optimus GX PRO 850X
- Model: SDSP81400TAH-000E0
- Device Type: Internal Solid State Drive (SSD)
- Capacity: 4TB
- Form Factor: M.2 2280-D5-M
- Memory Components: 3D NAND TLC
- Interface: PCI-Express 4.0 x4
- Protocol: NVMe 1.4
- 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): 2400TB
- MTBF: 1,750,000 hours
- HeatSink: with HeatSink
- Power Consumption (Idle): 5 mW
- Average Active Power Read: 8.0W
- Average Active Power Write: 7.2W
- Dimensions: 80mm depth, 24mm width, 10.31mm height
- Weight: 30.4g
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 5 years
- Limited Warranty period (labor): 5 years
- Read full details
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Newegg.ca's Standard Return Policy.
- Read full return policy for details.
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 4TB M.2 2280 NVMe SSD with a heatsink and PCIe 4.0 x4 interface, suited to PC builders who want high-capacity storage with sequential read speeds up to 7,300 MB/s and write speeds up to 6,600 MB/s.
Recommended For
- PC or PS5 players expanding a large game library who want one 4TB M.2 drive; SanDisk lists the heatsink model as PS5 and PS5 Pro compatible.
- Video editors and other creators working with large active projects who want a 4TB PCIe 4.0 drive for project files and frequent reads or writes; SanDisk positions the 850X for creative workflows and rates the 4TB model at 2,400 TBW.
- Gaming-PC builders who want a high-end PCIe 4.0 drive for a large game collection and fast game loading, and whose M.2 slot has room for the included heatsink.
- Workstation users moving large files between fast NVMe storage who want a factory heatsink to help manage drive temperatures during intensive workloads.
Real-World Use Scenarios
- For a gaming PC with a growing library of large titles, use the 4TB drive to keep more games installed at once; its fast storage can reduce game and level loading waits, though it does not increase frame rates by itself.
- As PS5 or PS5 Pro internal storage expansion, it can hold more installed games so players need to manage or redownload their library less often; the heatsink model is listed by SanDisk as compatible with both consoles.
- For video, photo, or other creative projects with large local assets, use it as a project drive to load and access files quickly; actual editing and export times still depend on the application, source media, and rest of the computer.
- For a gaming laptop or desktop with a spare compatible M.2 slot, install it as a secondary drive for games and frequently used files; community reports describe this kind of 4TB SN850X setup in a gaming laptop, but confirm the system's slot and clearance before buying.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | 4TB internal storage for gaming, business, or personal use |
| Capacity | 4TB |
| Interface And Form Factor | M.2 2280-D5-M SSD with PCIe 4.0 x4 and NVMe 1.4; includes a heatsink |
| Memory Technology | 3D NAND TLC |
| Read 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 | 2,400TB endurance rating and 1,750,000-hour MTBF |
| Power And Environmental Limits | 5mW idle power; average active power of 8.0W reading and 7.2W writing; operating temperature 0°C to 85°C and storage temperature −40°C to 85°C |
| Environmental Durability | Shock resistance up to 1,500G at 0.5ms; operating and non-operating vibration resistance specified across three axes |
| Compatibility | Compatible devices include desktops and laptops; listed as compatible with Sony PlayStation 5 |
| Physical Dimensions And Weight | 80 × 24 × 10.31mm; 30.4g |
| Model Identifiers | SanDisk Optimus GX PRO 850X; model SDSP81400TAH-000E0 |
Reference Q&A
Q: Is the SanDisk Optimus GX PRO 850X 4TB faster than the WD Black SN850X 4TB?
A: The GX PRO 850X is the successor branding for the WD Black SN850X, not a clear performance-generation upgrade. Both are PCIe 4.0 x4 drives with closely matching advertised sequential speeds; choose between them based on the specific model’s heatsink, warranty, price, and availability rather than expecting a major speed difference.
Q: Should I buy the 2TB or 4TB Optimus GX PRO 850X?
A: Choose the 4TB model if you need more room for games, media, or project files: it doubles the capacity and has a 2,400 TBW endurance rating, compared with 1,200 TBW for the 2TB model. Their advertised sequential read and write speeds are the same, so the 4TB model is mainly a capacity and endurance choice, not a rated sequential-speed upgrade.
Q: Optimus GX PRO 850X 4TB or Samsung 990 PRO 4TB?
A: Both are high-performance PCIe 4.0 M.2 2280 SSDs. Samsung lists slightly higher maximum sequential speeds for the 990 PRO—up to 7,450/6,900 MB/s read/write versus 7,300/6,600 MB/s for the GX PRO 850X—but those peak specifications alone do not establish which will feel faster in a particular PC. Compare the exact heatsink version and current price; the GX PRO 850X is a suitable choice if its configuration or price better fits your build.
Q: Is the GX PRO 850X 4TB worth choosing over the Optimus GX 7100 4TB?
A: Choose the GX PRO 850X if you want a drive with a specified DRAM cache and higher rated 4TB random-read performance: SanDisk lists 1.2 million IOPS for the GX PRO 850X versus 900,000 IOPS for the GX 7100. The GX 7100 uses Host Memory Buffer rather than DRAM and has lower listed average active power for the 4TB model. These are manufacturer specifications, so actual results depend on the workload and system.
Q: Will this SSD work in my PC or laptop?
A: It is designed for a system with an M.2 2280 slot that supports PCIe NVMe drives. Check your device’s specifications for slot compatibility, available space, and heatsink clearance before buying; the included heatsink is 10.31 mm high.
Q: Does this SSD need a separate heatsink?
A: No separate heatsink is listed as necessary: this 4TB model includes one. Before installation, check that your device has enough room for the drive’s 10.31 mm height, especially if the M.2 slot has a cover or is inside a laptop.
Q: Who is this 4TB SSD suitable for?
A: It suits users who need a large internal drive for games, media, or creative project files and have a compatible M.2 2280 PCIe NVMe slot. Its listed sequential speeds are up to 7,300 MB/s read and 6,600 MB/s write; actual performance depends on the host system and workload.
Q: Will it reach its advertised speeds in my system?
A: The listed maximums are up to 7,300 MB/s sequential read and 6,600 MB/s sequential write. Reaching those speeds depends on the system’s M.2 slot and PCIe support, as well as workload and other system limits; check your device specifications before buying.
Q: Is a 4TB SSD worth it for games and work files?
A: It may suit users who want a large game library or work files stored on one drive; Reddit discussions raise both uses. This model offers 4TB capacity and up to 7,300 MB/s read and 6,600 MB/s write speeds. Whether it is worth the cost depends on its price and how much capacity you need.
Q: Can I use the Optimus GX PRO 850X in a PCIe 3.0 motherboard?
A: The drive is specified for PCIe 4.0 x4. A Reddit discussion about the 850X and a PCIe 3.0 motherboard notes that it can operate at the older interface’s lower speeds rather than reaching its full PCIe 4.0 performance. Check that your motherboard’s M.2 slot supports NVMe drives.
Q: When comparing this drive with a smaller high-end SSD, should I prioritize capacity or price?
A: Prioritize capacity if you need room for a large collection of games or work files; choose the smaller drive if it meets your storage needs at a better price. A Reddit buyer directly compared a 2TB Optimus GX PRO 850X with a 1TB Samsung 990, but the discussion does not establish which was the better value. Compare current prices and capacity before deciding.