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Kingston A400 240GB vs 960GB SATA SSD: Which Capacity Is Better?

Comparison

Kingston A400 240GB vs 960GB SATA SSD: Which Capacity Is Better?

The Kingston A400 240GB and 960GB are closely related 2.5-inch SATA SSDs with the same listed maximum read and write speeds. The 240GB model leads the supplied overall and value scoring for a basic upgrade, while the 960GB version is the more practical choice for buyers who need far more room for applications, games, and files.

Expert tested Data driven Unbiased reviews Updated 2 August 2026
Kingston 240GB A400 SATA 3 2.5-inch Internal SSD

#1 Overall Winner

Kingston 240GB A400 SATA 3 2.5-inch Internal SSD

92/100
  • 240GB SATA SSD capacity for an operating system, core applications, and selected files.
View review
Kingston 960GB A400 SATA3 2.5-inch Internal SSD

Contender

Kingston 960GB A400 SATA3 2.5-inch Internal SSD

87/100
  • 960GB capacity provides four times the storage space of the 240GB model.
View review

Quick verdict

Choose the Kingston A400 240GB for an affordable, compact-capacity HDD replacement or boot drive. Choose the Kingston A400 960GB if you want the same stated SATA speed with substantially more space and fewer day-to-day storage constraints.

Overall winner

Depends on your needs

At-a-glance comparison

Feature Kingston 240GB A400 SATA 3 2.5-inch Internal SSD Kingston 960GB A400 SATA3 2.5-inch Internal SSD Winner
Capacity 240GB 960GB Kingston 960GB A400 SATA3 2.5-inch Internal SSD
Maximum read speed Up to 500MB/s Up to 500MB/s Tie
Maximum write speed Up to 450MB/s Up to 450MB/s Tie
Form factor 2.5-inch SATA 2.5-inch SATA Tie
Overall assessment Higher supplied overall score Lower supplied overall score Kingston 240GB A400 SATA 3 2.5-inch Internal SSD
Value Higher supplied value score; lower listed price Lower supplied value score; higher listed price Kingston 240GB A400 SATA 3 2.5-inch Internal SSD
Storage for games and media Limited by 240GB More room with 960GB Kingston 960GB A400 SATA3 2.5-inch Internal SSD
Reliability Higher supplied reliability score Lower supplied reliability score Kingston 240GB A400 SATA 3 2.5-inch Internal SSD
Build quality Lower supplied build-quality score Higher supplied build-quality score Kingston 960GB A400 SATA3 2.5-inch Internal SSD
Setup Same supplied setup score Same supplied setup score Tie
Compatibility Mixed review feedback Mixed review feedback Tie
Portability Higher supplied portability score Lower supplied portability score Kingston 240GB A400 SATA 3 2.5-inch Internal SSD

Detailed comparison

Performance

Performance should be very similar between these A400 capacities based on the provided specifications: both are rated for read speeds up to 500MB/s and write speeds up to 450MB/s. Both are positioned as major upgrades over mechanical hard drives for system startup, loading, transfers, and general responsiveness. Review feedback supports that use case, with buyers noting noticeably faster systems after an HDD replacement. Select the 960GB version for storage headroom, not because it is listed as faster.

Speed

The listed speed figures are tied: up to 500MB/s read and up to 450MB/s write for each drive. The 240GB A400 has a slightly higher supplied speed score, but the provided specifications do not identify a measurable maximum-speed advantage over the 960GB model. Either should feel substantially quicker than an HDD for booting and opening programs in a compatible system.

Reliability

The 240GB A400 has the higher supplied reliability score, and both product descriptions emphasize the lack of moving parts versus a mechanical drive. Long-term review examples describe A400 drives continuing to work after years of use, while the review overview is generally positive on reliability. The important caveat for either capacity is mixed compatibility feedback: some users report immediate detection, while others report that their system did not recognize the drive.

Kingston 240GB A400 SATA 3 2.5-inch Internal SSD

Pros

  • 240GB SATA SSD capacity for an operating system, core applications, and selected files.
  • Rated read speeds up to 500MB/s and write speeds up to 450MB/s.
  • Strong review feedback for faster boot times, loading, and general responsiveness versus a mechanical hard drive.
  • Compact 2.5-inch SATA format for compatible desktop and laptop upgrades.
  • Flash-based design has no moving parts and is described as cooler, quieter, and resistant to shock and vibration.
  • Higher overall and value scores in the supplied comparison data.

Cons

  • 240GB capacity can be restrictive once an operating system, applications, games, and personal files are installed.
  • Drive-only package; cloning software is not included.
  • Mixed compatibility feedback means some systems may not recognize the drive immediately.
  • SATA performance is limited compared with faster PCIe SSD options mentioned in review feedback.
  • It offers basic storage functionality rather than advanced storage features.
Kingston 240GB A400 SATA 3 2.5-inch Internal SSD

Kingston 960GB A400 SATA3 2.5-inch Internal SSD

Pros

  • 960GB capacity provides four times the storage space of the 240GB model.
  • Rated read speeds up to 500MB/s and write speeds up to 450MB/s.
  • Suitable for storing more games, programs, photos, videos, and documents on one drive.
  • 2.5-inch SATA design supports compatible desktop and notebook upgrades.
  • Shared review feedback highlights easy installation and noticeable improvements over mechanical hard drives.
  • Higher build-quality, design, and warranty-support scores in the supplied data.

Cons

  • Costs more than the 240GB A400 based on the provided prices.
  • Drive-only package; no cloning software is stated as included.
  • Mixed compatibility feedback means some buyers may need to troubleshoot detection or initialization.
  • It is designed for desktop and notebook workloads, not server environments.
  • Its supplied score profile is lower overall, for value, reliability, connectivity, portability, and power efficiency than the 240GB model.
Kingston 960GB A400 SATA3 2.5-inch Internal SSD

Final verdict

The Kingston A400 240GB is the best overall option in this comparison because it receives the higher supplied overall score and offers the same stated 500MB/s read and 450MB/s write performance as the 960GB drive at a lower listed price. It is a practical choice for refreshing an older compatible PC or laptop when storage needs are controlled.

The Kingston A400 960GB remains the better purchase for many users because capacity changes how comfortably a system can be used over time. Its 960GB space is far more accommodating for games, media, documents, and larger application libraries, and it does not sacrifice listed SATA speed to get there. Neither model is a feature-rich or server-focused SSD, and both have some mixed compatibility feedback. Verify your system's 2.5-inch SATA support, then choose 240GB for economy or 960GB for storage flexibility.

Overall winner

Depends on your needs

Frequently asked questions

Which is better, the Kingston 240GB A400 or 960GB A400?

The 240GB A400 is the stronger overall choice in the supplied scoring, particularly for value, reliability, portability, and power efficiency. The 960GB A400 is the better fit when storage capacity is the deciding factor, because it provides four times as much space while listing the same rated read and write speeds.

Do the Kingston A400 240GB and 960GB models have different speeds?

Not according to the provided specifications. Both drives list maximum read speeds up to 500MB/s and write speeds up to 450MB/s. For buyers choosing between these two versions, capacity and budget are therefore more important differentiators than their stated SATA performance figures.

Is 240GB enough for a Kingston A400 boot drive?

The 240GB drive can suit users who need space for an operating system, essential applications, and a limited file library. It may become restrictive for larger game libraries, extensive media collections, or many installed programs. Consider the 960GB model if you want one drive to hold substantially more content.

Is the 960GB Kingston A400 better for games and large files?

Yes, primarily because of its capacity. The 960GB A400 has four times the space of the 240GB version, making it more practical for larger programs, games, videos, photos, and documents. Its listed maximum read and write speeds are the same as the 240GB drive.

Are both Kingston A400 drives easy to install?

Both use a 2.5-inch SATA form factor for compatible desktops and laptops, and review feedback frequently describes installation as straightforward. However, some customers report mixed compatibility or detection experiences. Check that your device accepts a 2.5-inch SATA drive, and be prepared to initialize the drive if it is used as secondary storage.

Are Kingston A400 SSDs more reliable than hard drives?

Both listings describe their flash-based, no-moving-parts design as more reliable and durable than a mechanical hard drive, as well as quieter and more resistant to shock and vibration. Review feedback is broadly positive on reliability, although the supplied data also notes a minority of compatibility reports.

Do either of these SSDs include cloning software?

No cloning software is stated as included with the provided drive-only listings. Buyers migrating an existing installation should plan their data-transfer approach before purchasing. A fresh operating-system installation is one possible route, while cloning requires separate software or tools not listed as part of these products.

Which Kingston A400 is better value?

The 240GB A400 has the stronger supplied value score and lower listed price, making it the better value choice for modest storage needs. The 960GB model can still make sense for buyers who would otherwise need additional storage, since its much larger capacity may be more useful for a larger local library.

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