SanDisk Professional 2TB PRO-G40 SSD vs SanDisk Professional 1TB PRO-G40 SSD (2026): Key Differences
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The sandisk professional 2tb pro g40 SSD vs 1tb pro g40 SSD comparison highlights two rugged external drives with identical enclosures. Both feature Thunderbolt 3 and USB-C interfaces, IP68 dust and water resistance, and aluminum cooling cores. They share the same physical dimensions and weight. The main difference lies in storage capacity and maximum sequential read speeds. You get more space on the 2TB model, while the 1TB version offers slightly higher peak throughput.
Key differences
| Aspect | SanDisk PRO-G40 2TB Thunderbolt 3 SSD | SanDisk Professional 1TB PRO-G40 |
|---|---|---|
| Storage Capacity | 2TB | 1TB |
| Max Read Speed | Up to 2700 MB/s | Up to 3000 MB/s |
| Max Write Speed | Up to 1900 MB/s | Not listed |
| Interface | Thunderbolt 3, USB-C | Thunderbolt 3, USB-C |
| Cooling | Aluminum core | Cool aluminum core |
Which one should you choose?
Choose SanDisk PRO-G40 2TB Thunderbolt 3 SSD if
- You need double the storage space for large media libraries or backups
- You require a specific maximum write speed of 1900 MB/s for sustained transfers
- You prefer the drive that explicitly states it can move 50GB in under a minute
Choose SanDisk Professional 1TB PRO-G40 if
- You want the highest possible sequential read speed of 3000 MB/s
- You need a drive verified to work with Intel EVO laptops and desktops
- You prefer a smaller capacity drive that remains PC ready with exFAT format
Verdict: Choose the 2TB model if you prioritize capacity and verified write performance for large file transfers. The 1TB model is better if your workflow demands the highest possible read speeds and compatibility with Intel EVO systems. Both drives offer identical ruggedness and physical form factors.
PRO-G40 2TB vs 1TB Specs
Transfer Speed
The SanDisk PRO-G40 2TB Thunderbolt 3 SSD lists sequential read speeds up to 2700MB/s and write speeds up to 1900MB/s. This allows you to move large files quickly over Thunderbolt 3. The SanDisk Professional 1TB PRO-G40 offers higher peak performance, with read speeds reaching up to 3000MB/s. It does not explicitly list a maximum write speed in the provided specifications. For tasks involving massive single-file reads, the 1TB model has a slight edge in raw throughput. However, the 2TB drive provides a balanced read and write profile. Both speeds are achieved via the Thunderbolt 3 interface. USB-C speeds are not specified beyond the 10Gbps bandwidth limit.
Storage Capacity
Capacity is the primary difference between these two drives. The SanDisk PRO-G40 2TB Thunderbolt 3 SSD provides 2TB of storage space. This is double the amount of data you can store compared to the SanDisk Professional 1TB PRO-G40, which offers 1TB. Both drives use the same physical enclosure and internal architecture, so the larger capacity does not affect the drive's physical footprint or weight. You will need to choose based on your specific data needs. If you work with large video files or extensive libraries, the 2TB model is the better choice. If your storage requirements are lower, the 1TB drive meets your needs without extra cost.
Build and Durability
Both drives share identical rugged specifications. The SanDisk PRO-G40 2TB Thunderbolt 3 SSD and the SanDisk Professional 1TB PRO-G40 both feature an IP68 rating for dust and water resistance. They also offer 4000lb crush resistance and can withstand drops from up to 3 meters onto carpeted concrete. Both models utilize a cool aluminum core to pull heat away from the internal drive. The physical dimensions are exactly the same, measuring 2.28 inches in width, 0.47 inches in height, and 4.36 inches in length. They also weigh the same at 4.32 ounces. The build quality and protection level are identical for both options.
Interface Compatibility
Both drives support dual-mode compatibility with Thunderbolt 3 and USB-C. The SanDisk PRO-G40 2TB Thunderbolt 3 SSD works with Thunderbolt 3 ports at 40Gbps and USB-C ports at 10Gbps. The SanDisk Professional 1TB PRO-G40 also supports these same interfaces. The 1TB model explicitly notes that it is verified to work with Intel EVO laptops and desktops. The 2TB model does not carry this specific verification statement in the provided data. For most users, both drives will function similarly on modern systems. The 1TB drive has a slight advantage in confirmed compatibility with specific Intel EVO standards.
Cooling System
Thermal management is crucial for maintaining speed in external SSDs. Both the SanDisk PRO-G40 2TB Thunderbolt 3 SSD and the SanDisk Professional 1TB PRO-G40 use a cool aluminum core. This design pulls heat away from the internal drive to help maintain super-fast transfer speeds during sustained workloads. The specifications for cooling are identical for both models. There is no difference in the thermal solution or the materials used for the enclosure. You can expect similar thermal behavior from either drive under heavy use. The aluminum construction serves as both a structural element and a heat sink for both capacities.
Which PRO-G40 model fits you best
Creators needing maximum storage space
Choose the 2TB drive if you shoot high-resolution video or manage large asset libraries. It offers double the capacity of the 1TB version while maintaining the same 2700MB/s read speeds. This extra room ensures you do not run out of space during intensive workflows, making it ideal for professionals who prioritize volume alongside performance.
Users prioritizing peak transfer speeds
Select the 1TB model if your priority is the fastest possible read performance. It reaches up to 3000MB/s over Thunderbolt 3, slightly edging out the 2TB variant. This higher speed helps you move files quicker, which is beneficial when time is critical. The rugged design and dual connectivity remain identical to the larger drive.
Those wanting verified Intel EVO compatibility
The 1TB version is explicitly verified to work with Intel EVO laptops and desktops. If you use an Intel EVO system, this certification ensures reliable dual-mode compatibility with both Thunderbolt 3 and USB-C. You get the same rugged IP68 protection and aluminum cooling, but with the added assurance of tested integration with your specific hardware.
The products compared
SanDisk PRO-G40 2TB Thunderbolt 3 SSD
Best for: Rugged 2TB external storage
- Storage Capacity
- 2TB
- Interface
- Thunderbolt 3, USB-C
- Form Factor
- External
- Max Read Speed
- 2700 MB/s
- Max Write Speed
- 1900 MB/s
- Cooling
- Aluminum core
View on Amazon: SanDisk PRO-G40 2TB Thunderbolt 3 SSD Affiliate link
The SanDisk Professional 2TB PRO-G40 is an external drive offering up to 2700MB/s read and 1900MB/s write speeds. It connects via Thunderbolt 3 or USB-C. The aluminum core helps manage heat during transfers. Its IP68 rating provides dust and water resistance. This model suits users who need high capacity and rugged durability for professional media workflows.
Pros
- Read speeds up to 2700MB/s
- IP68 dust and water resistance
- 4000lb crush resistance
- Aluminum core for cooling
- Dual Thunderbolt 3 and USB-C support
Cons
- Slower write speeds than the 1TB version
- Thunderbolt 3 interface requires compatible port
- Heavier build at 4.32 ounces
Good fit if
- You need 2TB of storage capacity
- You work in harsh environments
- You use Thunderbolt 3 capable devices
Skip if
- You only need 1TB of space
- You lack a Thunderbolt 3 port
- You prioritize the fastest possible write speeds
Verdict: The SanDisk Professional 2TB PRO-G40 delivers robust durability and high capacity for professionals. It fits users who need reliable storage in tough conditions.
SanDisk Professional 1TB PRO-G40
Best for: rugged portable storage for field work
- Storage Capacity
- 1TB
- Interface
- Thunderbolt 3, USB-C
- Form Factor
- External
- Max Read Speed
- Up to 3000MB/s
- Cooling
- Cool aluminum core
- Transfer Speed
- 10Gbps
View on Amazon: SanDisk Professional 1TB PRO-G40 Affiliate link
This is the 1TB version of the SanDisk Professional PRO-G40 external SSD. It offers read speeds up to 3000MB/s via Thunderbolt 3. The drive features an IP68 rating for dust and water resistance. It also withstands 4000lb of crush pressure and 3m drops. The aluminum core helps manage heat. It suits users who need rugged portability and fast transfers for large files.
Pros
- Read speeds up to 3000MB/s with Thunderbolt 3
- IP68 dust and water resistance rating
- 4000lb crush resistance and 3m drop protection
- Cool aluminum core for thermal management
Cons
- Smaller 1TB capacity compared to the 2TB option
- Thunderbolt 3 interface requires compatible ports for max speed
- Heavier and bulkier than standard internal SSDs
Good fit if
- You need rugged protection for field work
- You require fast data transfer for large media files
- You work in dusty or wet environments
Skip if
- You need more than 1TB of storage
- Your computer lacks Thunderbolt 3 ports
- You prioritize maximum capacity over durability
Verdict: SanDisk Professional 1TB PRO-G40 delivers rugged reliability and high speed for creative professionals. It is the right choice if you need a durable drive for on-location work but do not require the larger 2TB capacity.
Specifications side by side
| Spec | SanDisk PRO-G40 2TB Thunderbolt 3 SSD | SanDisk Professional 1TB PRO-G40 |
|---|---|---|
| Storage Capacity | 2TB | 1TB |
| Interface | Thunderbolt 3, USB-C | Thunderbolt 3, USB-C |
| Form Factor | External | External |
| Max Read Speed | 2700 MB/s | Up to 3000MB/s |
| Max Write Speed | 1900 MB/s | not stated |
| Cooling | Aluminum core | Cool aluminum core |
| Transfer Speed | 10Gbps | 10Gbps |
| Size | 2TB | 1TB |
| Host Interface | USB-C | USB-C |
| Dimensions | 4.36 × 2.28 × 0.47 inches | 4.36 × 2.28 × 0.47 inches |
| Weight | 4.32 ounces | 4.32 ounces |
| Color | Black | Black |
| Model | SDPS31H-002T-GBCND | SDPS31H-001T-GBC1D |
Frequently asked questions
Is the 2TB PRO-G40 significantly heavier than the 1TB version?
No. Both drives weigh exactly 4.32 ounces. The physical dimensions are also identical, measuring 4.36 inches in length, 2.28 inches in width, and 0.47 inches in height. You will not notice a difference in bulk or weight when carrying either model in your bag.
Do both models support the same host interfaces?
Yes. Each drive features a USB-C host interface. They also support Thunderbolt 3 connectivity for maximum transfer speeds. This means you can use the same cables and ports for either the 1TB or 2TB version without needing different adapters or hardware.
What is the main difference between the two PRO-G40 drives?
The primary difference is storage capacity. The first model offers 2TB of space, while the second provides 1TB. All other specifications, including transfer speeds, durability ratings, and physical build, remain the same. Choose based on whether you need double the storage for your projects.
Are the models black or silver in color?
Both the 1TB and 2TB PRO-G40 drives are black. The exterior finish is consistent across the product line. This uniform color scheme ensures that whichever capacity you select, it will match the rugged, professional aesthetic of the other drive in the series.
Can I use the 1TB drive for high-resolution video editing?
Yes. The 1TB PRO-G40 is designed for rugged portable storage suitable for field work. It supports high-speed data transfers via USB-C and Thunderbolt 3. While it has half the capacity of the 2TB model, it still delivers the performance needed for creative professionals.
Do the drives have different model numbers?
Yes. The 2TB version has the model number SDPS31H-002T-GBCND. The 1TB version is identified as SDPS31H-001T-GBC1D. These distinct identifiers help you verify which capacity you are purchasing or referencing when comparing technical specifications or support documentation.
Is the 2TB version better for rugged outdoor use?
Both versions are built for rugged use. They share the same durable enclosure and IP68 rating for dust and water resistance. The 2TB model is ideal if you need more space for outdoor shoots, but the 1TB model offers the same level of physical protection.