Average Bench: 59.9% (719th of 1003)

more Based on 46,435 user benchmarks.  Models: KINGSTON SA400S37120G, KINGSTON SA400S37120, KINGSTON SA400S37120G, KINGSTON SA400S3, KINGSTON KINGSTON SA400S3, KINGSTON SA400S37240G

Average average bench

The Kingston A400 120GB averaged 40.1% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K-64Thread Mixed IO Speed 96.8MB/s
Avg. 4K Random Read Speed 26.2MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 120GB is 40.2%. This is a relatively wide range which indicates that the Kingston A400 120GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 89.6MB/s
Avg. Sequential Write Speed 228MB/s

Average Bench

(Based on 46,435 samples)
Min Avg Max
288 Read 388 489
72.5 Write 228 376
80.8 Mixed 238 342
39 SusWrite 89.6 160
52.4% 236 MB/s
Min Avg Max
8.93 4K Read 26.2 36.3
18 4K Write 62.3 94.8
10.4 4K Mixed 24.8 40.5
104% 37.8 MB/s
Min Avg Max
28.2 DQ Read 144 254
31.9 DQ Write 185 326
9.66 DQ Mixed 96.8 187
91.9% 142 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
90GB free
Firmware: 03070009
SusWrite @10s intervals: 220 123 62 60 61 60 MB/s
Read 456
Write 338
Mixed 306
SusWrite 97.7
67% 299 MB/s
4K Read 33.9
4K Write 71
4K Mixed 42.5
143% 49.1 MB/s
DQ Read 154
DQ Write 142
DQ Mixed 118
97% 138 MB/s
18GB free (System drive)
Firmware: SBFK61K1
SusWrite @10s intervals: 103 107 71 40 29 53 MB/s
Read 351
Write 267
Mixed 283
SusWrite 67.3
54% 242 MB/s
4K Read 33.6
4K Write 73.1
4K Mixed 30.6
129% 45.8 MB/s
DQ Read 214
DQ Write 183
DQ Mixed 141
121% 179 MB/s
59GB free (System drive)
Firmware: 03070009
SusWrite @10s intervals: 198 56 56 56 51 52 MB/s
Read 474
Write 279
Mixed 297
SusWrite 78.1
62% 282 MB/s
4K Read 30.3
4K Write 49.4
4K Mixed 33.6
115% 37.8 MB/s
DQ Read 149
DQ Write 59.8
DQ Mixed 113
82% 107 MB/s
19GB free (System drive)
Firmware: SBFK71E0
SusWrite @10s intervals: 126 45 7.3 40 56 39 MB/s
Read 378
Write 271
Mixed 258
SusWrite 52.1
53% 240 MB/s
4K Read 19.6
4K Write 76.9
4K Mixed 15.9
91% 37.5 MB/s
DQ Read 163
DQ Write 315
DQ Mixed 122
126% 200 MB/s
46,435 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 15,833,945 SSDs tested.


AmazonUS $201 min
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Typical A400 120GB Builds (Compare 13,404 builds) See popular component choices, score breakdowns and rankings.
Gaming 40%
Jet ski
Desktop 58%
Workstation 36%
Jet ski

Motherboard: Asus PRIME A320M-K - $61

EDIT WITH CUSTOM PC BUILDER Value: 91% - Outstanding Total price: $305

Popular A400 120GB compatible motherboards:

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Solid State Drive Rankings (Price vs Performance) July 2019 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.


Controller: Phison PS3111-S11. Flash Memory: Toshiba 15nm TLC

Added n/a ago.


2 months ago.

Very slow SSD wish I never bought it


2 months ago.

My bios never recognised that disk even though it worked with the Samsung 840 Evo and 850 Evo. Bad choise.


7 months ago.

poor life time...30 days drop to 97%


6 months ago.

It's not bad,but doesn't have TRIM support...


5 months ago.

Its okay for a budget SSD and for just storing the OS and nothing else on it, but you may as well spend slightly more money for more space and faster speeds.


3 months ago.

Horrible SSD, uses a controller with a known reputation for failing, and is more expensive than significantly better SSDs, like the WD Green, SU650, and L5 Lite 3D

1003 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $350Nvidia GTX 1070 $400Samsung 850 Evo 250GB $104
AMD Ryzen 5 2600 $127Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $103
AMD Ryzen 7 2700X $248Nvidia GTX 1080-Ti $709Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $128
Seagate Barracuda 3TB (2016) $70G.SKILL Trident Z DDR4 3200 C14 4x16GB $606SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Ultra Fit 32GB $12
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