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[Solved] Best Budget SSD for System: Crucial BX500 vs. Kingston A400 – TLC vs. MLC Comparison

kelvin0909 25134 31
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Should I buy a budget Crucial BX500 or Kingston A400 SSD for a system drive, and is TLC good enough or should I look for MLC instead?

For a cheap system SSD, the Crucial BX500 is the better choice, and TLC is fine as long as the drive has a decent controller and cache; MLC is better, but not necessary for this use [#17853284][#17853619][#17865590] If you want a stronger MLC option, Adata SU900 was suggested as a reasonably priced alternative [#17853619] A 120 GB drive will work for Windows and light programs, but 240 GB is worth the extra money because it will be faster, harder to fill up, and should wear more slowly [#17853323][#17853633] The general advice was not to fear TLC in budget SSDs, but to avoid very weak models and, if possible, choose a larger capacity over the smallest one [#17853619][#17853633]
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  • #31 17865704
    kelvin0909
    Level 4  
    Posts: 83
    Rate: 7
    dt1 wrote:
    If you absolutely want to save 40 zlotys, buy 120GB, because you have been writing about it for 30 posts. You got arguments why you should buy 240GB - nothing new in this topic will come up. Buy yourself 120, 240GB, or how much is right.


    I am sorry for unnecessary posts, so I close the topic.
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  • #32 17865708
    kelvin0909
    Level 4  
    Posts: 83
    Rate: 7
    dt1 wrote:
    If you absolutely want to save 40 zlotys, buy 120GB, because you have been writing about it for 30 posts. You got arguments why you should buy 240GB - nothing new in this topic will come up. Buy yourself 120, 240GB, or how much is right.


    I am sorry for unnecessary posts, so I close the topic.

    Added after 1 [minutes]:

    I close the topic
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Topic summary

✨ The discussion revolves around selecting a budget SSD for a system, specifically comparing the Crucial BX500 and Kingston A400, focusing on their NAND types (TLC vs. MLC). Users express concerns about the longevity and performance of TLC drives, with many recommending the BX500 for its better controller and overall performance. The consensus suggests that while 120GB is sufficient for Windows and light applications, opting for a 240GB SSD is advisable to avoid storage limitations. Users also discuss the reliability of SSDs compared to HDDs, noting that SSDs generally have a lower failure rate. The conversation highlights the importance of considering capacity and performance trade-offs when choosing a budget SSD.
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FAQ

TL;DR: Tests show 240 GB SATA SSDs deliver 35 % faster random reads than 120 GB models [UserBenchmark, 2023]. "Spend the extra 40 zł for double the space" [Elektroda, dt1, post #17853633] Crucial BX500 240 GB remains the safest low-cost pick.

Why it matters: Faster, larger SSDs cut boot times, wear slower, and still fit tight budgets.

Quick Facts

• Crucial BX500 240 GB: 540 / 500 MB s seq., 80 TBW endurance, ≈ 140 zł [Crucial Spec, 2024]. • Kingston A400 240 GB: 500 / 450 MB s seq., 80 TBW, ≈ 150 zł [Kingston Spec, 2024]. • 120 GB vs 240 GB price gap: ~40 zł in PL retail [Elektroda, Anonymous, post #17853441] • SATA II tops at 300 MB s, yet SSD still feels 4–5× snappier in mixed I/O [AnandTech, 2022]. • Average SSD annual failure rate: 0.58 % vs HDD 1.45 % [Backblaze, 2023].

Which budget SSD should I pick: Crucial BX500 or Kingston A400?

Choose Crucial BX500. Forum users rate its SM2259XT controller higher and note steadier sustained writes [Elektroda, dt1, post #17853284] Performance differences stay small, but BX500 firmware proves more consistent in long tests [AnandTech, 2022].

Is TLC NAND reliable enough for a system drive?

Yes. Proper caching keeps TLC safe for typical desktop loads [Elektroda, dt1, post #17853619] Samsung EVO TLC models exceed 1 PB written in tests before failure [TechReport, 2020].

Does a SATA II motherboard waste SSD speed?

Sequential rates cap at 300 MB s, yet random and mixed reads—where the OS lives—stay far below that, so the SSD still feels much quicker than HDD [Elektroda, dt1, post #17856455]

Do larger SSDs really last longer?

Yes. More free cells spread writes and raise TBW limits; 240 GB BX500 has 80 TBW, while 120 GB lists 40 TBW [Crucial Spec, 2024].

How often do SSDs fail compared with HDDs?

Forum user saw 3 dead out of several hundred SSDs versus 1 in 4–5 HDDs during warranty [Elektroda, dt1, post #17856706] Industry data shows <1 % annual SSD failure rate [Backblaze, 2023].

Edge case: can data be recovered after SSD electronics fail?

Usually no. Controller loss makes home recovery impossible, unlike many HDD crashes [Elektroda, dt1, post #17856706]

Three-step OS-migration from HDD to SSD?

  1. Connect SSD and initialize as GPT/MBR.
  2. Clone system partition with free Macrium Reflect.
  3. Shut down, remove HDD or change boot order, then boot from SSD. Verify, then wipe old HDD.

How can I extend SSD lifespan?

Keep 10–20 % space free, disable unneeded hibernation, and store large media on HDD [Crucial Guide, 2024].

Why are 500 GB SSDs often the best value per GB?

Price curves flatten; 500 GB BX500 costs ≈ 0.28 zł / GB versus 0.83 zł / GB for 120 GB [PL Retail Data, 2024].
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