UserBenchmark: Adata Ultimate SU800 vs Kingston A400

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KingstonSA400S37/240G

BUY • $28

AdataASU800SS-128GT-C

BUY • $30

BenchYourSSD

Real World Speed

Performance profile from 456,455 user samples

Benchmark your SSD here

424,288 User Benchmarks

Best Bench: 100% 181GB free (System drive)
Worst Bench: 33% 119GB free (System drive)

Poor: 33% Great: 100%

SPEED RANK: 733^rd / 1071

32,167 User Benchmarks

Best Bench: 107% 96GB free
Worst Bench: 49% 30GB free

Poor: 49% Great: 107%

SPEED RANK: 531^st / 1071


Effective Speed Effective SSD Speed		65.8 %			77.2 %	Faster effective speed. +17%


Read Avg. Sequential Read Speed	414 MB/s		465 MB/s	Faster read speed. +12%
Write Avg. Sequential Write Speed	318 MB/s	Faster write speed. +14%	279 MB/s
4K Read Avg. 4K Random Read Speed	26.7 MB/s		28.5 MB/s	Slightly faster random read. +7%
4K Write Avg. 4K Random Write Speed	56.9 MB/s		80.1 MB/s	Much faster random write. +41%
Mixed Avg. Sequential Mixed IO Speed	260 MB/s		288 MB/s	Faster mixed IO speed. +11%
4K Mixed Avg. 4K Random Mixed IO Speed	22.4 MB/s		37.3 MB/s	Much faster random mixed IO. +67%
SusWrite Avg. Sustained Write Speed	179 MB/s	Slightly faster sustained write speed. +9%	164 MB/s


Read Peak Sequential Read Speed	504 MB/s		510 MB/s	+1%
Write Peak Sequential Write Speed	446 MB/s	+1%	442 MB/s
4K Read Peak 4K Random Read Speed	36.1 MB/s		37.7 MB/s	+4%
4K Write Peak 4K Random Write Speed	106 MB/s		118 MB/s	Faster peak random write. +11%
Mixed Peak Sequential Mixed IO Speed	420 MB/s		428 MB/s	+2%
4K Mixed Peak 4K Random Mixed IO Speed	42 MB/s		51 MB/s	Faster peak random mixed IO. +21%
SusWrite Peak Sequential Sustained Write 60s Average	432 MB/s	Slightly faster peak sustained write speed. +8%	399 MB/s

Market Share

Based on 75,750,375 SSDs tested

See market share leaders


Market Share Market Share (trailing 30 days)	1.2 %	Insanely higher market share. +11,900%	0.01 %
Value Value For Money	21.5 %	Much better value. +44%	14.9 %
User Rating UBM User Rating	53 %		53 %
Price Price (score)	$28	Slightly cheaper. +7%	$30


Age Newest	87 Months	+4%	91 Months
DQ Read Peak 4K-64Thread Read Speed	288 MB/s	Faster peak deep queue read. +11%	259 MB/s
DQ Write Peak 4K-64Thread Write Speed	349 MB/s	+0%	348 MB/s
AS-SSD Total AS-SSD Total Score	1,076 Pts	+3%	1,047 Pts
DQ Mixed Peak 4K-64Thread Mixed IO Speed	204 MB/s		235 MB/s	Faster peak deep queue mixed IO. +15%
ADQ Read Avg. 4K-64Thread Read Speed	191 MB/s	Much faster deep queue read. +31%	146 MB/s
ADQ Write Avg. 4K-64Thread Write Speed	214 MB/s	Faster deep queue write. +16%	185 MB/s
ADQ Mixed Avg. 4K-64Thread Mixed IO Speed	92.7 MB/s		118 MB/s	Faster deep queue mixed IO. +27%


Capacity Capacity			240GB			128GB

could have used some DRAM, stutters when booting. ^{[Dec '19 ExecutableFiles]}

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Solid State Drive Rankings (Price vs Performance) April 2024 SSD Rankings

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. ^[SSDrivePro]

Group Test Results

Best user rated - User sentiment trumps benchmarks for this comparison.
Best value for money - Value for money is based on real world performance.
Fastest real world speed - Real World Speed measures performance for typical consumers.

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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Frequently Asked Questions

Storage Devices FAQ

What is sustained sequential write speed?

What’s the difference between SLC, MLC and TLC?

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CPU	GPU	SSD
Intel Core i5-13600K $269	Nvidia RTX 4060 $295	Crucial MX500 250GB $40
Intel Core i5-12400F $133	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $177	Nvidia RTX 4070 $539	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16