Ever found yourself needing to upgrade your laptop, mini PC, or a specific device but hit a wall with storage options? Traditional SSDs might be too big, and standard M.2 drives (like 2280) simply won’t fit. That’s where the mighty 42mm SSDs come into play! These compact powerhouses, also known as M.2 2242 SSDs, are designed for devices with limited space, offering a fantastic performance boost without taking up much room.
Finding the best 42mm SSD can be a bit tricky, as they’re not as common as their larger counterparts. But don’t worry, we’ve done the legwork for you! In this comprehensive guide, we’ll dive into the top 7 best 42mm SSDs available on the market, breaking down their features, pros, and cons to help you make an informed decision. Whether you’re looking for lightning-fast NVMe speeds or reliable SATA performance, there’s a 2242 SSD here for you.
Let’s get started and find the perfect compact storage solution for your needs!
1. SAMSUNG 512GB M.2 2242 42mm PM991 NVMe PCIe Gen 4…
The Samsung PM991 is a fantastic choice for those looking to upgrade their compact devices with a significant speed boost. This 512GB M.2 2242 NVMe SSD brings PCIe Gen 4 technology to the smaller form factor, ensuring brisk boot times and rapid data transfers for everything from casual use to heavy-duty tasks like gaming or graphics work. While it leverages the latest PCIe Gen 4 interface, it’s also backward compatible with PCIe Gen3, making it quite versatile for many systems. Just remember to double-check your device’s slot type, as some older Lenovo ThinkPads might only support SATA 2242 SSDs.
Key Features:
– Interface: NVMe PCIe Gen 4 x 4 (backward compatible with PCIe Gen3 x4)
– Form Factor: M.2 2242 (22mm x 42mm)
– Key Type: M Key
– Sequential Read/Write: Up to 3100/2000 MB/s
– Random Read/Write: Up to 380K/330K IOPS
– Full Power Mode for sustained performance
Pros:
– Excellent performance for a 2242 drive, especially for PCIe Gen 4
– Good balance of speed and capacity
– Ideal for gaming and graphic-intensive applications
– Compatible with a wide range of laptops and desktops with the correct slot
Cons:
– May not be compatible with older laptops that only support M.2 SATA 2242 SSDs
– Performance might be bottlenecked on PCIe Gen3 systems
User Impressions: Users often praise this SSD for its noticeable speed improvement in compatible devices, transforming older laptops into snappy machines. The “Full Power Mode” is appreciated for consistent performance during demanding tasks.
2. SN740 Black 1TB M.2 2242 42mm PCIe Gen 4 x4…
When it comes to raw speed in a tiny package, the SN740 Black 1TB M.2 2242 is a serious contender. This high-capacity NVMe drive takes full advantage of the PCIe Gen 4 x4 interface, delivering impressive read and write speeds that will significantly cut down loading times and make file transfers feel instant. Specifically designed for compatibility with certain modern Lenovo Thinkpad and Ideapad models, it’s a stellar choice for users seeking top-tier performance in a compact form factor. If your device supports it, this could easily be the best 42mm SSD for a substantial upgrade.
Key Features:
– Interface: NVMe PCIe Gen 4 x 4 (backward compatible with PCIe Gen3 x4)
– Form Factor: M.2 2242 (22mm x 42mm)
– Key Type: M Key
– Sequential Read/Write: Up to 5200/4700 MB/s
– Random Read/Write: Up to 380K/330K IOPS
– Specific compatibility with select Lenovo models (Thinkpad E14/E15 Gen 4, X1 Nano, etc.)
Pros:
– Exceptional PCIe Gen 4 speeds for a 2242 SSD
– Generous 1TB capacity for extensive storage needs
– Drives consistent high performance with Full Power Mode
– Perfect for high-performance laptops and workstations
Cons:
– Specific compatibility means it won’t fit all 2242 slots
– Higher price point due to capacity and speed
User Impressions: Reviewers frequently highlight the SN740 Black’s incredible speed, noting how it breathes new life into compatible laptops. The 1TB capacity is also a major plus for users who need ample space for applications and files.
3. Samsung SSD 256GB PM991 M.2 2242 42mm PCIe 3.0 x4…
The Samsung PM991 also comes in a 256GB capacity, offering a more budget-friendly entry point for a quality NVMe upgrade. While this particular variant operates on PCIe 3.0 x4, it still provides a significant performance leap over older SATA SSDs or traditional hard drives. It’s a solid choice for users who need a reliable, speedy boot drive or additional storage for their operating system and essential applications in a compact form factor. Samsung’s reputation for reliability makes this 256GB best 42mm SSD a safe bet for many.
Key Features:
– Interface: NVMe PCIe 3.0 x 4
– Form Factor: M.2 2242 (22mm x 42mm)
– Key Type: M Key
– Capacity: 256GB
– Compatible with most laptops and desktops supporting M.2 2242 NVMe PCIe slots
Pros:
– Reliable Samsung brand quality
– Cost-effective solution for an NVMe upgrade
– Improved boot times and application loading compared to SATA drives
– Good for basic use, office tasks, and light gaming
Cons:
– Lower capacity might be limiting for some users
– PCIe 3.0 speeds are not as fast as Gen 4 options
User Impressions: Customers find this 256GB PM991 to be a dependable and efficient upgrade, particularly for older laptops or devices where space is at a premium. Its speed, though PCIe 3.0, is generally considered more than adequate for everyday computing.
4. Oemgenuine OEM WDC 256GB M.2 PCI-e NVME SSD Internal…
The Oemgenuine OEM WDC 256GB M.2 PCIe NVMe SSD offers a straightforward and dependable solution for expanding or upgrading storage in compatible devices. This Western Digital (WDC) drive, supplied by Oemgenuine, provides solid NVMe performance in the compact 2242 form factor. It’s an excellent choice for those seeking a no-frills, reliable boot drive or a secondary storage unit for specific applications, fitting perfectly into ultrabooks and mini PCs that support M.2 2242 NVMe.
Key Features:
– Capacity: 256GB
– Interface: M.2 2242 PCIe NVME SSD
– Form Factor: M.2 2242 (22mm x 42mm)
– Key Type: M Key
– Compatibility: Laptop & Desktop Compatible (with M.2 2242 NVMe PCIe slot)
– Warranty: 2-Year Oemgenuine Warranty
Pros:
– Reputable Western Digital OEM quality
– Standard NVMe speeds for a noticeable performance boost
– Compact 2242 form factor for space-constrained devices
– Decent 2-year warranty for peace of mind
Cons:
– Bulk packaging means no extra accessories (screws, cables)
– 256GB capacity might be restrictive for extensive storage
– Specific performance metrics (read/write speeds) are not explicitly listed, but generally reliable.
User Impressions: Users appreciate the plug-and-play simplicity and the immediate performance boost this drive provides. Its OEM nature means it’s often a direct fit for many devices, making it a popular choice for straightforward upgrades.
5. GAMERKING SSD 256GB M.2 2242 NVMe PCIe Gen3.0x4 42mm M.2…
Don’t let the name fool you – the GAMERKING SSD 256GB M.2 2242 isn’t just for gamers, though its speed will certainly please them! This NVMe PCIe Gen3.0x4 drive offers fantastic value, delivering impressive read/write speeds up to 2500/2000 MB/s, which is a significant leap over SATA M.2 SSDs. Its compact size and slim design make it perfect for Ultrabooks, laptops, and tablets with limited space. Plus, with a thermal guard feature to maintain stability under load and a generous 5-year warranty, it’s a highly attractive and affordable option for a high-quality best 42mm SSD.
Key Features:
– Interface: NVMe PCIe Gen3 x 4
– Form Factor: M.2 2242 (22mm x 42mm)
– Sequential Read/Write: Up to 2500/2000 MB/s
– Features a thermal guard for improved stability and sustained performance
– Utilizes 3D NAND TLC flash for enhanced performance and low power consumption
– Wide compatibility with Windows, Linux, Unix, etc.
– 5 Years Warranty & Multiple Capacities (256GB, 512GB, 1TB)
Pros:
– Excellent price-to-performance ratio for a PCIe 3.0 NVMe drive
– Built-in thermal management for stable operation
– 5-year warranty provides long-term peace of mind
– Significantly faster than M.2 SATA or 2.5″ SATA SSDs
– Compact and versatile for various devices
Cons:
– Not PCIe Gen 4, so speeds won’t match the absolute fastest drives
– Lesser-known brand compared to Samsung or WD (though they state 10+ years experience)
User Impressions: Customers are often pleasantly surprised by the performance and reliability of the GAMERKING SSD, especially given its competitive price. The 5-year warranty is frequently cited as a major positive, instilling confidence in the purchase.
6. Samsung 512GB SSD M.2 2242 42mm PM9B1 NVMe PCIe 4.0…
The Samsung PM9B1 represents another leap forward in the compact SSD world, bringing full PCIe 4.0 speeds to the 512GB M.2 2242 form factor. This drive is a perfect upgrade for users who demand cutting-edge performance from their ultra-compact devices. With sequential read speeds up to 3500 MB/s and strong random performance, the PM9B1 ensures quick boot-ups, snappy application loading, and efficient handling of large files. It’s a fantastic example of a best 42mm SSD that doesn’t compromise on speed.
Key Features:
– Interface: PCIe 4.0 Gen4 x4 (backward compatible with PCIe Gen3 x4)
– Form Factor: M.2 2242 (22mm x 42mm)
– Sequential Read/Write: Up to 3500/2500 MB/s
– Random Read/Write: Up to 400K/350K IOPS
– Compatibility: All systems with M.2 2242 NVMe PCIe slot
Pros:
– True PCIe 4.0 performance in a compact 2242 size
– High sequential and random speeds for demanding tasks
– Samsung’s renowned quality and reliability
– Good capacity for a primary drive or significant storage expansion
Cons:
– May be more expensive than PCIe 3.0 alternatives
– Performance benefits are only fully realized on PCIe 4.0 compatible systems
User Impressions: Users rave about the speed difference this drive makes, transforming their compatible devices into high-performance machines. The Samsung brand trust adds an extra layer of confidence for buyers.
7. S SHARKSPEED SSD 4TB M.2 2242 SATA III 6Gb/s B+M…
Breaking from the NVMe trend, the S SHARKSPEED SSD stands out by offering an incredible 4TB of storage in the M.2 2242 form factor, specifically designed for SATA III 6Gb/s interfaces. This is crucial for devices that don’t support NVMe but still need a significant storage upgrade. While its sequential speeds (up to 550MB/s read) won’t match NVMe drives, they are top-tier for a SATA SSD, offering a massive leap over traditional hard drives. For those with older laptops or specific mini PCs that only have an M.2 2242 SATA slot, this 4TB beast might just be the best 42mm SSD for sheer capacity.
Key Features:
– Interface: M.2 2242 SATA III 6Gb/s (B+M Key)
– Form Factor: M.2 2242 (22mm x 42mm)
– High Speed (SATA): Sequential Read up to 550MB/s, Write up to 500MB/s (for 1TB variant, similar for 4TB)
– Data Protection: Built-in ECC, garbage collection, S.M.A.R.T., and TRIM functions
– High Performance: Latest 3D NAND flash technology and intelligent chip
– Excellent Reliability: Intelligent temperature management, no noise, shockproof, low power consumption
– Capacity: Massive 4TB option available
Pros:
– Unmatched 4TB capacity in the 2242 form factor (perfect for data hoarders!)
– Ideal for devices that only support M.2 SATA 2242 SSDs
– Excellent speeds for a SATA III drive, significantly faster than HDDs
– Robust data protection and reliability features
– Low power consumption helps extend laptop battery life
Cons:
– Not as fast as NVMe PCIe SSDs
– Compatibility is limited to M.2 SATA 2242 slots, not NVMe slots
User Impressions: Users needing large storage in a compact, SATA-compatible format are thrilled with the S SHARKSPEED. Its reliability and the sheer amount of storage packed into a small drive make it a standout for specific use cases.
Frequently Asked Questions (FAQ)
Q1: What is a 42mm SSD (M.2 2242)?
A1: A 42mm SSD, also known as an M.2 2242 SSD, is a solid-state drive that measures 22mm wide by 42mm long. This compact form factor is specifically designed for devices with limited internal space, such as some ultrabooks, mini PCs, and specialized industrial computers, where larger M.2 drives (like 2280) won’t fit.
Q2: What’s the difference between NVMe and SATA M.2 2242 SSDs?
A2: The main difference is speed and interface. NVMe (Non-Volatile Memory Express) SSDs use the PCIe interface, offering significantly faster read and write speeds (thousands of MB/s) ideal for high-performance tasks. SATA (Serial ATA) M.2 2242 SSDs use the SATA interface, which is slower (maxing out around 550 MB/s) but generally more affordable and compatible with older systems. Your device’s M.2 slot will support either one or the other, or sometimes both (via B+M keying).
Q3: How do I know if my laptop or device supports a 42mm SSD?
A3: You’ll need to check your device’s specifications or open it up and look at the M.2 slot. The slot itself might have markings indicating supported lengths (e.g., 2242, 2260, 2280). You should also check whether it’s an NVMe (M-key) or SATA (B-key or B+M-key) compatible slot. Your device’s manual or manufacturer’s website is the best source of information.
Q4: Can I use a 42mm SSD in a standard desktop PC?
A4: Most standard desktop motherboards primarily feature M.2 2280 slots. However, some smaller form factor desktop PCs or specific motherboards might have a 2242 slot. If not, you might be able to use a 2242 SSD with an M.2 adapter card that fits into a larger M.2 slot or a PCIe slot, though this adds complexity.
Q5: Will upgrading to a 42mm SSD improve my device’s performance?
A5: Absolutely! If you’re currently using an older hard disk drive (HDD) or a slower SATA SSD, upgrading to an NVMe 42mm SSD will drastically improve boot times, application loading, and overall system responsiveness. Even upgrading from a SATA M.2 2242 to an NVMe M.2 2242 (if your system supports it) will yield a noticeable speed boost.
Q6: Are 42mm SSDs hot? Do they need a heatsink?
A6: NVMe SSDs, especially Gen 4, can generate heat under heavy loads due to their high performance. While many 42mm SSDs are designed to manage heat within their small footprint (some even featuring thermal guards like the GAMERKING), in very confined spaces or under sustained heavy use, they can get warm. For most typical laptop or mini PC use, a heatsink isn’t strictly necessary, but it can help maintain peak performance by preventing thermal throttling.
Q7: What capacity 42mm SSD should I get?
A7: The ideal capacity depends on your usage.
– 256GB: Good for a boot drive and essential applications, suitable for light users.
– 512GB: A good balance for general use, including some games and media files.
– 1TB: Excellent for power users, gamers, and professionals who need ample space for software, large projects, and extensive media libraries.
– 4TB (SATA): For those who need massive storage and have a compatible SATA slot, perfect for archiving or large data sets.
Conclusion
Choosing the best 42mm SSD for your specific device really comes down to understanding your needs and your system’s compatibility. Whether you’re looking for blazing-fast NVMe speeds to cut down on load times, or a high-capacity SATA solution to store all your data in a compact form, there’s a 2242 SSD out there for you.
We hope this guide has illuminated the path to your perfect compact storage upgrade. Remember to double-check your device’s specifications before purchasing, and get ready to experience a significant boost in performance!