Transcend 120GB M.2 2242 SATA vs Transcend 120GB M.2 SATA SSD (2026): Key Differences
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You are comparing the transcend 120gb mts420s m 2 sata vs 120gb mts820s m 2 sata. Both drives share 120GB capacity, SATA III interfaces, and 3D TLC NAND with SLC caching. They also offer identical read speeds. The main difference is physical size. One uses the compact 2242 form factor. The other uses the standard 2280 size. This affects which motherboards or devices can accept each drive.
Key differences
| Aspect | Transcend 120GB M.2 2242 SATA SSD | Transcend 120GB M.2 SATA SSD |
|---|---|---|
| Form Factor | M.2 2242 (42mm length) | M.2 2280 (80mm length) |
| Max Write Speed | 500MB/sec | 510MB/sec |
| Color | Multicoloured | Black |
Which one should you choose?
Choose Transcend 120GB M.2 2242 SATA SSD if
- You need a short drive for a laptop or mini-PC with limited space.
- Your device only supports the 2242 M.2 slot.
- You prefer the multicoloured PCB design.
Choose Transcend 120GB M.2 SATA SSD if
- You need a standard long drive for most desktop motherboards.
- You want the slightly higher write speed of 510MB/sec.
- You prefer the black PCB aesthetic.
Verdict: Choose the MTS420S if your hardware requires the shorter 2242 footprint. Pick the MTS820S for standard desktop compatibility and a marginally faster write speed. Both deliver the same read performance and core features.
Size, Speed, and Cache Comparison
Form factor
The Transcend 120GB M.2 2242 SATA SSD uses the 2242 form factor, measuring 42mm in length. This compact size fits into smaller devices like ultrabooks or mini PCs where space is limited. The Transcend 120GB M.2 SATA SSD uses the standard 2280 form factor, measuring 80mm in length. This is the most common size for desktops and standard laptops. You must check your motherboard or device specifications to ensure the slot supports your chosen length. The 2280 model offers broader compatibility with standard systems, while the 2242 model is better for constrained enclosures.
Write speed
Both drives utilize SATA III interfaces, but their maximum write speeds differ slightly. The Transcend 120GB M.2 2242 SATA SSD reaches up to 500MB/sec for writes. The Transcend 120GB M.2 SATA SSD reaches up to 510MB/sec. This 10MB/sec difference is negligible in real-world usage. Both drives share the same 560MB/sec read speed. The slight edge in write performance for the 2280 model may provide a marginal benefit during large file transfers, but you will likely not notice it during everyday tasks like booting an OS or loading applications.
Cache type
Both the Transcend 120GB M.2 2242 SATA SSD and the Transcend 120GB M.2 SATA SSD feature SLC cache technology. This caching mechanism mimics the faster performance of Single-Level Cell memory by storing a portion of data in a high-speed buffer. This helps maintain higher write speeds when copying large files, preventing the slowdowns often seen with TLC NAND. Since both models use the same caching strategy and 3D TLC NAND flash, their sustained performance characteristics are identical. You get the same benefit from this technology on either drive.
NAND type
Transcend builds both drives using premium 3D TLC NAND flash memory chips. This type of memory stores three bits per cell, offering a balance of capacity, speed, and cost. The 3D stacking allows for higher densities and better endurance compared to older planar NAND. Since both the 2242 and 2280 models use this same NAND technology, their underlying data storage architecture is the same. This means you can expect similar reliability and lifespan metrics from either product, assuming you use them within their specified operational limits.
Warranty
Both the Transcend 120GB M.2 2242 SATA SSD and the Transcend 120GB M.2 SATA SSD are backed by a Transcend 3-year warranty. This coverage provides peace of mind regarding manufacturing defects and general reliability over a reasonable period. Since the warranty terms are identical for both form factors, this factor does not influence your decision between the two. You receive the same level of support and protection regardless of whether you choose the shorter 2242 model or the standard 2280 model.
Which Transcend SSD fits your device
Owners of compact ultrabooks or mini PCs
This drive uses the 2242 form factor, measuring only 42mm in length. Its compact dimensions allow it to fit into tight spaces where larger drives will not work. You get the same SATA III interface and 560MB/sec read speeds as the larger model, ensuring reliable performance in space-constrained systems without needing extra mounting hardware.
Users with standard M.2 slots
This model features the standard 2280 form factor, which is the most common size for desktops and many laptops. It offers a slightly higher write speed of 510MB/sec compared to the 500MB/sec of the smaller drive. You benefit from the same 120GB capacity and SLC caching technology, making it a versatile choice for general storage upgrades.
Those needing maximum sequential write speed
If your workflow involves moving large files frequently, this drive provides a peak write speed of 510MB/sec. This is marginally faster than the 500MB/sec offered by the 2242 version. Both drives share the same SATA III interface and 3D TLC NAND flash, but this extra throughput can reduce wait times during heavy data transfers.
The products compared
Transcend 120GB M.2 2242 SATA SSD
Best for: Compact systems needing small SATA SSDs
- Storage Capacity
- 120GB
- Interface
- SATA III 6GB/s
- Max Read Speed
- 560MB/sec
- Max Write Speed
- 500MB/sec
- Cache Type
- SLC Cache
- Form Factor
- M.2 2242
View on Amazon: Transcend 120GB M.2 2242 SATA SSD Affiliate link
This Transcend drive uses M.2 2242 form factor with SATA III interface. It offers 120GB capacity and SLC cache. Read speeds reach 560MB/sec. Write speeds hit 500MB/sec. It fits compact systems needing small SSDs. You get reliable performance for basic storage tasks. The compact size suits tight spaces. It supports standard SATA commands.
Pros
- M.2 2242 form factor for compact builds
- SATA III 6GB/s interface
- Read speed up to 560MB/sec
- SLC cache technology
Cons
- Limited 120GB storage capacity
- Smaller 2242 size may not fit all M.2 slots
- Lower write speed compared to larger capacity models
Good fit if
- You need a small M.2 SSD for tight spaces
- You require SATA III compatibility
- You want reliable performance for light tasks
Skip if
- You need more than 120GB storage
- You require M.2 2280 size
- You want NVMe speeds
Verdict: Transcend 120GB M.2 2242 SATA SSD fits users needing compact storage with SATA III speeds. It suits tight builds requiring small SSDs. You get reliable performance for basic tasks.
Transcend 120GB M.2 SATA SSD
Best for: Basic M.2 2280 SATA storage needs
- Storage Capacity
- 120GB
- Interface
- SATA III 6GB/s
- Max Read Speed
- 560MB/sec
- Max Write Speed
- 510MB/sec
- Cache Type
- SLC Cache
- Form Factor
- M.2 2280
View on Amazon: Transcend 120GB M.2 SATA SSD Affiliate link
This Transcend drive offers 120GB of storage in a standard M.2 2280 form factor. It uses a SATA III 6GB/s interface with SLC caching. Read speeds reach 560MB/sec, while write speeds hit 510MB/sec. It uses 3D TLC NAND flash. You need a motherboard with an M.2 2280 slot. It suits users needing reliable storage for basic computing tasks.
Pros
- SATA III 6GB/s interface
- Read speeds up to 560MB/sec
- SLC Cache technology
- 3D TLC NAND flash memory
Cons
- Smaller 120GB capacity option
- Standard 3-year warranty
- No NVMe speeds available
Good fit if
- You need a standard M.2 2280 drive
- You want SATA III reliability
- You need SLC caching for performance
Skip if
- You require NVMe speeds
- You need more than 120GB storage
- You prefer larger M.2 form factors
Verdict: Transcend 120GB M.2 2280 SATA SSD provides steady SATA III performance for basic storage needs. It fits users who prioritize standard form factors and reliable caching over raw speed.
Specifications side by side
| Spec | Transcend 120GB M.2 2242 SATA SSD | Transcend 120GB M.2 SATA SSD |
|---|---|---|
| Storage Capacity | 120GB | 120GB |
| Interface | SATA III 6GB/s | SATA III 6GB/s |
| Max Read Speed | 560MB/sec | 560MB/sec |
| Max Write Speed | 500MB/sec | 510MB/sec |
| Cache Type | SLC Cache | SLC Cache |
| Form Factor | M.2 2242 | M.2 2280 |
| Compatibility | Laptop, Desktop | Laptop, Desktop |
| Dimensions | 0.87 × 0.15 × 3.15 inches | 0.87 × 0.15 × 3.15 inches |
| Size | 120GB | 120GB |
| Color | Multicoloured | Black |
| Model | TS120GMTS420S | TS120GMTS820S |
Frequently asked questions
Are both drives SATA III compatible?
Yes, both the Transcend 120GB M.2 2242 SATA SSD and the Transcend 120GB M.2 SATA SSD use the SATA III interface. This ensures they work with standard motherboards that support SATA connections. You get consistent bandwidth for everyday tasks like web browsing and office work.
What is the difference in physical dimensions?
The main difference is the form factor. The first drive uses a 2242 size, which is shorter. The second drive uses the standard 2280 size. Both share the same width and height. You should check your device slot to see which length fits your hardware.
Do they use the same type of cache?
Both models feature SLC cache technology. This caching method helps maintain faster write speeds during burst transfers. It improves performance when you are copying multiple files at once. This feature is common in entry-level SATA SSDs to enhance responsiveness.
Is the capacity identical on both models?
Yes, both drives offer 120GB of storage space. This capacity is suitable for operating system installations and basic applications. It provides enough room for essential files without taking up excessive space. You get the same amount of digital storage regardless of which form factor you choose.
Which model is better for mini PCs?
The Transcend 120GB M.2 2242 SATA SSD is often better for mini PCs. Its compact 42mm length fits into smaller chassis where space is tight. The 2280 model is longer and may not fit in ultra-compact builds. Choose the 2242 version for tighter constraints.
Does color affect performance?
No, color does not affect performance. The 2242 model is multicoloured, while the 2280 model is black. These cosmetic differences are purely aesthetic. Both drives deliver the same SATA III speeds and storage capabilities. Your choice should depend on physical fit rather than appearance.