Looking Beyond the ADATA SD820 1000GB External SSD? 6 Alternatives Worth a Look
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The ADATA SD820 1000GB External SSD offers durable, portable storage in a compact blue enclosure. It provides 1000GB of capacity in an external form factor, making it a practical choice for users who value simplicity and physical protection. This drive suits those who need reliable transport for their data without complex features. However, you might look for adata sd820 1000gb external SSD alternatives if your needs differ. Perhaps you require more storage capacity, a different interface like NVMe, or specific security features such as hardware encryption. Some users may prefer a standard 2.5-inch internal drive for desktop upgrades, while others might need ruggedized designs for harsh environments. The alternatives listed here were chosen because their specifications overlap with the original product in key areas like capacity, form factor, or intended use case. Each option presents a distinct set of specs that may better align with your specific requirements. Whether you need budget-friendly options, higher speeds, or enhanced security, these selections provide viable paths. This guide compares these drives based strictly on their published specifications to help you make an informed decision. You can evaluate each product's attributes to find the best fit for your setup.
How alternatives compare to SD820
SanDisk SSD Plus 2TB SATA III SSD
The SanDisk SSD Plus 2TB SATA III SSD differs from the ADATA SD820 by being an internal drive rather than an external portable unit. It offers double the storage capacity at 2TB compared to the SD820’s 1000GB. You must install it inside a desktop or laptop using a standard SATA III connection. This makes it ideal for permanent upgrades where space allows for a 2.5-inch form factor. It lacks the rugged, pocketable design of the SD820. If you need higher capacity for a fixed system rather than portable storage, this drive provides more value.
iStorage diskAshur2 128GB Encrypted SSD
The iStorage diskAshur2 128GB Encrypted SSD focuses on security rather than capacity. It provides only 128GB of storage, which is significantly less than the SD820’s 1000GB. However, it includes hardware encryption and password protection features that the SD820 does not list. This makes it suitable for users who prioritize data protection over large storage space. The drive is slightly larger and heavier than the compact SD820. If you need to transport small but highly sensitive files securely, this encrypted option is a better fit than the standard external drive.
SanDisk Extreme 500GB Portable SSD
The SanDisk Extreme 500GB Portable SSD is a rugged alternative with a USB-C interface. It offers less storage capacity than the SD820, providing 500GB instead of 1000GB. It is designed for durability, making it suitable for photographers and travelers who need physical protection for their data. The drive is compact and lightweight, similar to the SD820. It emphasizes transfer speeds up to 550MB/s. If you need a smaller, rugged drive for field work, this model is a practical choice, though you sacrifice half the storage capacity found in the ADATA drive.
Intel 660p 1TB NVMe M.2 SSD
The Intel 660p 1TB NVMe M.2 SSD is an internal drive, not an external portable unit. It uses an NVMe interface and M.2 2280 form factor, requiring installation inside a compatible system. It offers 1TB of storage, matching the SD820’s capacity. This drive is built for budget-conscious internal upgrades, providing strong read speeds up to 1800 MB/s. It uses QLC NAND type technology. Unlike the SD820, it is not designed for portable use. If you are upgrading a desktop or laptop internally and need high performance, this NVMe drive is a superior technical choice.
Intel D3-S4510 240GB 2.5-Inch SATA SSD
The Intel D3-S4510 240GB 2.5-Inch SATA SSD is an internal drive with significantly less storage than the SD820. It provides only 240GB compared to the SD820’s 1000GB. It uses a standard SATA III interface and 2.5-inch form factor for internal installation. This drive is intended for basic internal storage upgrades in systems with standard bays. It lacks the external, portable nature of the SD820. If you need a reliable, low-capacity drive for basic computing tasks in a fixed system, this option fits, but it offers much less space than the ADATA portable drive.
Seagate FireCuda 1TB 2.5-Inch SATA SSHD
The Seagate FireCuda 1TB 2.5-Inch SATA SSHD is an internal hybrid drive, not an external SSD. It offers 1TB of storage, matching the SD820’s capacity. It uses a SATA III interface and is designed for laptop gamers needing extra storage without the cost of full SSD speeds. It provides a middle ground between capacity and performance. Unlike the SD820, it is not portable and must be installed internally. If you are upgrading a laptop and need large storage for gaming, this SSHD is a suitable internal alternative, though it lacks the external convenience of the ADATA drive.
Quick picks
Our 7 picks
ADATA SD820 1000GB External SSD
Best for: portable 1TB storage needs
- Storage Capacity
- 1000GB
- Form Factor
- External
View on Amazon: ADATA SD820 1000GB External SSD Affiliate link
The ADATA SD820 is a 1000GB external solid state drive designed for portable storage. It features a durable blue casing and connects via USB. This drive offers 1TB of space, making it suitable for users who need to move large files between computers. The external form factor ensures easy transport. You get reliable performance for everyday backups and media storage without the complexity of internal installation.
Pros
- 1000GB storage capacity
- External portable form factor
- Durable blue casing design
Cons
- Only 1000GB capacity available
- No specific transfer speeds listed
- No encryption features mentioned
Good fit if
- You need extra portable storage for files
- You prefer a durable external drive
- You want a simple plug-and-play solution
Skip if
- You require higher than 1TB capacity
- You need built-in hardware encryption
- You are building a desktop PC
Verdict: ADATA SD820 1TB Blue External SSD is a practical choice for users needing portable 1TB storage. It fits those who value durability and simplicity over high-speed benchmarks or advanced security features.
SanDisk SSD Plus 2TB SATA III SSD
Best for: Standard 2.5-inch desktop and laptop upgrades
- Storage Capacity
- 2TB
- Interface
- SATA III 6 Gb/s
- Form Factor
- 2.5"/7mm
- Max Read Speed
- Up to 545MB/s
- Max Write Speed
- Up to 515MB/s
- Cache Type
- SLC Caching
View on Amazon: SanDisk SSD Plus 2TB SATA III SSD Affiliate link
This 2TB internal drive uses a SATA III interface to deliver sequential read speeds up to 545MB/s and write speeds up to 515MB/s. It features SLC caching to boost burst performance for everyday tasks like gaming and video editing. The 2.5-inch form factor fits standard desktops and laptops. It is a reliable upgrade for users needing high capacity without the cost of NVMe.
Pros
- 2TB storage capacity for large media libraries
- Sequential read speeds up to 545MB/s
- SLC caching improves burst write performance
- Shock-resistant design with no moving parts
Cons
- SATA III interface limits speed compared to NVMe
- No included migration software license details
- Only 3-year limited warranty coverage
Good fit if
- You need 2TB of storage for photos and videos
- You are upgrading a desktop or laptop with a 2.5-inch bay
- You want reliable performance for everyday productivity
Skip if
- You require PCIe NVMe speeds for heavy workloads
- You are building a compact M.2-only system
- You need extended warranty coverage beyond three years
Verdict: SanDisk SSD Plus 2TB SATA is a practical internal drive for users who prioritize capacity and standard SATA compatibility over maximum speed. It fits well in traditional PCs where space allows for a 2.5-inch form factor.
iStorage diskAshur2 128GB Encrypted SSD
Best for: secure portable storage
- Storage Capacity
- 128GB
- Interface
- USB 3.2
- Form Factor
- Portable
- Max Read Speed
- Up to 361MB/s
- Max Write Speed
- Up to 358MB/s
- Security
- Hardware Encryption, Password Protection
View on Amazon: iStorage diskAshur2 128GB Encrypted SSD Affiliate link
This portable drive focuses on hardware-level security rather than raw speed. It uses AES-XTS 256-bit encryption and requires a PIN for access. You get read speeds up to 361MB/s and write speeds up to 358MB/s via USB 3.2. The unit is IP56 certified for dust and splash resistance. It suits users who need to protect sensitive data on the go without installing software.
Pros
- AES-XTS 256-bit hardware encryption
- PIN-based authentication
- IP56 dust and splash resistance
- No software required
Cons
- Limited to 128GB capacity
- Slower speeds than NVMe alternatives
- Heavier build for portability
Good fit if
- You need hardware encryption
- You carry drives in rugged environments
- You store small sensitive files
Skip if
- You need large storage capacity
- You require high-speed transfers
- You want a lightweight drive
Verdict: iStorage diskAshur2 128GB External SSD is a secure option for users who prioritize data protection over speed and capacity.
SanDisk Extreme 500GB Portable SSD
Best for: rugged portable storage needs
- Storage Capacity
- 500GB
- Interface
- USB-C, USB 3.1
- Form Factor
- Portable External
- Max Read Speed
- 550MB/s
- Dimensions
- 3.8 × 1.9 × 0.3 inches
- Weight
- 1.38 ounces
View on Amazon: SanDisk Extreme 500GB Portable SSD Affiliate link
This SanDisk drive offers 500GB of portable storage with up to 550MB/s read speeds. It features a rugged, IP55-rated enclosure that resists water and dust. The compact design fits easily in your pocket. It connects via USB-C and USB 3.1 interfaces. This drive suits users who need durable, high-speed external storage for photos and videos on PC or Mac systems.
Pros
- Up to 550MB/s read speeds for fast file transfers
- IP55-rated water and dust resistance
- Shock-resistant core withstands up to 1500G
- Compact pocket-sized form factor
Cons
- Limited to 500GB capacity
- No mention of included USB-C to USB-A adapter
- 3-year warranty is shorter than some competitors
Good fit if
- You need a rugged drive for outdoor use
- You prioritize compact size for travel
- You require fast read speeds for media files
Skip if
- You need more than 500GB of storage
- You require internal drive installation
- You need encryption features not listed here
Verdict: SanDisk 500GB Extreme Portable SSD is a durable option for users who need reliable, pocket-sized storage with strong read speeds. It fits photographers and travelers who value physical protection for their data.
Intel 660p 1TB NVMe M.2 SSD
Best for: budget-conscious internal NVMe upgrades
- Storage Capacity
- 1 TB
- Interface
- PCIe NVMe 3.0 x4
- Form Factor
- M.2 2280
- Max Read Speed
- 1800 MB/s
- Max Write Speed
- 1800 MB/s
- NAND Type
- QLC
View on Amazon: Intel 660p 1TB NVMe M.2 SSD Affiliate link
The Intel 660p is a 1TB internal M.2 2280 drive using PCIe NVMe 3.0 x4. It delivers up to 1800 MB/s for both sequential read and write speeds. You get 3D QLC NAND storage in a compact black module. This drive suits users who need fast internal storage for desktops or laptops without the premium price of TLC NAND options.
Pros
- 1 TB storage capacity
- PCIe NVMe 3.0 x4 interface
- 1800 MB/s sequential read speed
- 1800 MB/s sequential write speed
- Compact M.2 2280 form factor
Cons
- Uses QLC NAND which may have lower endurance than TLC
- No included mounting hardware or heatsink
- Internal drive only, not portable
Good fit if
- You need fast internal storage for a desktop PC
- You want high sequential speeds for large file transfers
- You are building a budget-conscious NVMe system
Skip if
- You require a portable external SSD
- You need maximum drive endurance for heavy write workloads
- You are looking for a 2.5-inch SATA drive
Verdict: The Intel 660p 1TB NVMe SSD offers strong 1800 MB/s speeds for users upgrading their internal storage. It fits well in systems where PCIe NVMe performance is needed but budget constraints exist.
Intel D3-S4510 240GB 2.5-Inch SATA SSD
Best for: Basic internal storage upgrades
- Storage Capacity
- 240 GB
- Interface
- SATA 6Gb/s
- Form Factor
- 2.5"
- Dimensions
- 4.53 × 0.67 × 5.63 inches
- Weight
- 2.08 ounces
View on Amazon: Intel D3-S4510 240GB 2.5-Inch SATA SSD Affiliate link
The Intel D3-S4510 is a 240 GB internal solid state drive built for the 2.5-inch form factor. It uses the SATA III interface for reliable data transfer. This drive is designed for users who need a compact, durable storage solution for standard desktops or laptops. The TLC NAND flash memory offers a balance of performance and endurance. It is a straightforward option for basic storage upgrades.
Pros
- 240 GB storage capacity
- SATA III 6 Gb/s interface
- 2.5-inch form factor
- TLC NAND flash memory
Cons
- Small 240 GB capacity limits large file storage
- SATA interface is slower than NVMe options
- Internal drive requires separate enclosure for portability
Good fit if
- You need a reliable internal drive for a desktop PC
- You are upgrading an older system with a 2.5-inch bay
- You require a durable drive for light workloads
Skip if
- You need high-speed external portability
- You require large storage for media libraries
- You want NVMe speeds for gaming
Verdict: The Intel D3-S4510 240GB 2.5 SATA SSD is a solid choice for users needing a dependable internal drive for basic computing tasks. It fits well in systems with standard 2.5-inch bays but lacks the speed and capacity for demanding modern applications.
Seagate FireCuda 1TB 2.5-Inch SATA SSHD
Best for: Laptop gamers needing extra storage
- Storage Capacity
- 1TB
- Interface
- SATA 6GB/s
- Form Factor
- 2.5 Inch
- Compatibility
- Laptop, Gaming
- Dimensions
- 3.95 × 2.75 × 0.28 inches
- Weight
- 3.39 ounces
View on Amazon: Seagate FireCuda 1TB 2.5-Inch SATA SSHD Affiliate link
This Seagate FireCuda 1TB drive combines SATA III connectivity with flash acceleration. It uses a 2.5-inch form factor, making it easy to fit into laptops. The hybrid design aims to speed up game loading and boot times. You get 1TB of storage space. It runs on low power. This setup works well if you want more capacity than a standard SSD offers.
Pros
- 1TB storage capacity
- SATA III interface
- 2.5-inch form factor
- Flash acceleration for faster loading
- Low power consumption
Cons
- Hybrid drive speed is slower than pure NVMe SSDs
- 2.5-inch size is bulkier than M.2 drives
- Flash cache is limited compared to full SSDs
Good fit if
- You need 1TB of storage in a laptop
- You play games and want faster load times than a standard HDD
- You prefer a 2.5-inch form factor
Skip if
- You need the fastest possible NVMe speeds
- You want a compact M.2 drive for a slim laptop
- You only need 500GB of space
Verdict: Seagate FireCuda 1TB SSHD fits users who need large storage in a laptop without paying for full SSD speeds. It offers a middle ground between capacity and performance.
Specifications side by side
| Spec | ADATA SD820 1000GB External SSD | SanDisk SSD Plus 2TB SATA III SSD | iStorage diskAshur2 128GB Encrypted SSD | SanDisk Extreme 500GB Portable SSD | Intel 660p 1TB NVMe M.2 SSD | Intel D3-S4510 240GB 2.5-Inch SATA SSD | Seagate FireCuda 1TB 2.5-Inch SATA SSHD |
|---|---|---|---|---|---|---|---|
| Storage Capacity | 1000GB | 2TB | 128GB | 500GB | 1 TB | 240 GB | 1TB |
| Interface | not stated | SATA III 6 Gb/s | USB 3.2 | USB-C, USB 3.1 | PCIe NVMe 3.0 x4 | SATA 6Gb/s | SATA 6GB/s |
| Form Factor | External | 2.5"/7mm | Portable | Portable External | M.2 2280 | 2.5" | 2.5 Inch |
| Max Read Speed | not stated | Up to 545MB/s | Up to 361MB/s | 550MB/s | 1800 MB/s | not stated | not stated |
| Max Write Speed | not stated | Up to 515MB/s | Up to 358MB/s | not stated | 1800 MB/s | not stated | not stated |
| Cache Type | not stated | SLC Caching | not stated | not stated | not stated | not stated | not stated |
| Compatibility | not stated | not stated | not stated | not stated | not stated | not stated | Laptop, Gaming |
| NAND Type | not stated | not stated | not stated | not stated | QLC | not stated | not stated |
| Security | not stated | not stated | Hardware Encryption, Password Protection | not stated | not stated | not stated | not stated |
| Size | 1000GB | 2TB | 128GB | 500GB | 1 TB | not stated | 1TB |
| Host Interface | not stated | not stated | not stated | USB-C | not stated | not stated | not stated |
| Dimensions | not stated | 3.95 × 2.75 × 0.27 inches | 4.72 × 3.15 × 0.59 inches | 3.8 × 1.9 × 0.3 inches | 6.5 × 4.75 × 0.75 inches | 4.53 × 0.67 × 5.63 inches | 3.95 × 2.75 × 0.28 inches |
| Weight | not stated | 1.15 ounces | 7.62 ounces | 1.38 ounces | 1.6 ounces | 2.08 ounces | 3.39 ounces |
| Color | BLUE | Black | Ocean Blue | Standard Enclosure–Transfer Speed Up to 550MB/s* | black | Silver | Black |
| Model | SD820 | SDSSDA-2T00 | IS-DA2-256-SSD-128-BE | SDSSDE60-500G-G25 | SSDPEKNW010T8X1 | SSDSC2KB240G801 | ST1000LX015 |
Frequently asked questions
Is there a larger capacity external SSD available besides the ADATA SD820?
Yes, the SanDisk SSD Plus 2TB SATA III SSD offers double the storage. However, it is an internal drive with a 2.5-inch form factor, not an external portable unit. You must install it inside a desktop or laptop. It provides 2TB of space for users who prioritize capacity over the compact, plug-and-play nature of external drives like the SD820.
What is the best budget-friendly option for secure external storage?
The iStorage diskAshur2 128GB Encrypted SSD is designed for secure portable storage. It features hardware encryption and password protection to keep your data safe. While it has a smaller 128GB capacity compared to the SD820, it is ideal if you prioritize security over large file storage. It is a practical choice for users who need encrypted protection for sensitive files.
Which external SSD is best for rugged use and travel?
The SanDisk Extreme 500GB Portable SSD is built for rugged portable storage needs. It offers a compact design with transfer speeds up to 550MB/s. This drive suits photographers and travelers who need reliable, pocket-sized storage with strong physical protection. It is a durable option for those who value physical resilience and consistent read speeds on the go.
Can I use an internal NVMe drive as an alternative to the SD820?
The Intel 660p 1TB NVMe M.2 SSD is a strong internal alternative. It uses the NVMe interface and M.2 2280 form factor, offering speeds up to 1800 MB/s. This drive fits users upgrading internal storage who need high performance but have budget constraints. It is not an external portable drive but provides significant speed advantages for internal system upgrades.
Is there a SATA SSD alternative for basic internal upgrades?
The Intel D3-S4510 240GB 2.5-Inch SATA SSD is a solid choice for basic internal storage upgrades. It uses the SATA III interface and fits standard 2.5-inch bays. This drive is dependable for basic computing tasks but lacks the speed and capacity for demanding modern applications. It is suitable for systems requiring standard internal storage without the need for external portability.
What is a good option for laptop gamers needing extra storage?
The Seagate FireCuda 1TB 2.5-Inch SATA SSHD fits users who need large storage in a laptop. It offers a middle ground between capacity and performance, suitable for gaming. This drive is compatible with laptops and provides 1TB of space. It is a practical choice for gamers who want extra storage without paying for full SSD speeds, making it ideal for expanding laptop capacity.