Average Bench: 89.9% (318th of 1058)

Based on 6,073 user benchmarks.  Model: CT120BX300SSD1

Very good average bench

The Crucial BX300 120GB averaged just 10.1% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Crucial BX300 120GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 185MB/s
Avg. 4K Random Mixed IO Speed 41MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Crucial BX300 120GB is 55.5%. This is a relatively wide range which indicates that the Crucial BX300 120GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 265MB/s
Avg. 4K-64Thread Read Speed 192MB/s

Average Bench

(Based on 6,073 samples)
Min Avg Max
378 Read 476 516
155 Write 343 458
169 Mixed 343 441
137 SusWrite 265 415
79.8% 357 MB/s
Min Avg Max
19.8 4K Read 30.8 42.1
36.7 4K Write 83.1 121
24.1 4K Mixed 41 55.9
143% 51.6 MB/s
Min Avg Max
136 DQ Read 192 280
92.6 DQ Write 270 355
75 DQ Mixed 185 240
153% 216 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
58GB free (System drive)
Firmware: M2CR021
SusWrite @10s intervals: 360 391 340 436 443 362 MB/s
Read 491
Write 448
Mixed 440
SusWrite 389
99% 442 MB/s
4K Read 39.2
4K Write 106
4K Mixed 54.7
186% 66.5 MB/s
DQ Read 211
DQ Write 331
DQ Mixed 232
186% 258 MB/s
73GB free (System drive)
Firmware: M2CR021
SusWrite @10s intervals: 394 415 413 398 405 325 MB/s
Read 503
Write 427
Mixed 420
SusWrite 392
98% 435 MB/s
4K Read 37.6
4K Write 93.7
4K Mixed 50.9
172% 60.7 MB/s
DQ Read 278
DQ Write 329
DQ Mixed 239
198% 282 MB/s
72GB free (System drive)
Firmware: M2CR021
SusWrite @10s intervals: 393 404 404 406 406 361 MB/s
Read 452
Write 406
Mixed 403
SusWrite 396
93% 414 MB/s
4K Read 32.5
4K Write 95.1
4K Mixed 40.1
151% 55.9 MB/s
DQ Read 266
DQ Write 335
DQ Mixed 239
197% 280 MB/s
48GB free (System drive)
Firmware: M2CR010
SusWrite @10s intervals: 223 223 221 228 119 217 MB/s
Read 490
Write 212
Mixed 276
SusWrite 205
66% 296 MB/s
4K Read 25.7
4K Write 84.2
4K Mixed 31.5
124% 47.1 MB/s
DQ Read 148
DQ Write 229
DQ Mixed 148
124% 175 MB/s
6,073 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,300,798 SSDs tested.


MSRP ≈ $50 @ launch in Aug '17
AmazonUS $8021 months
Send price feedback
Typical BX300 120GB Builds (Compare 40,285 builds) See popular component choices, score breakdowns and rankings.
Gaming 31%
Sail boat
Desktop 81%
Aircraft carrier
Workstation 29%

Motherboard: Asus PRIME A320M-K - $59

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $578

Popular BX300 120GB compatible motherboards:

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

Welcome to our freeware 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 upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - SkillBench (space shooter) tests user input accuracy.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
Solid State Drive Rankings (Price vs Performance) September 2021 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: Silicon Motion SM2258. Flash Memory: Micron 3D MLC

You dont need a new computer, just the Crucial BX300...

Added 3 years ago.


2 years ago.

Super fast speed for a smaller 120 drive. Compares to 850 Pro speeds for about $100 less! Found it on sale for $69.99 and is the best bang for the buck!


2 years ago.

Excellent product, very good performance!!!


2 years ago.



Really good price to performance on this MLC SSD. for a 120GB it delivers a punch as most 120GB models have limited performance, as producers want you to buy the larger capacity, more expensive models such as 240GB and so on. This drive competes with other top quality, low price storage drives. —Nov '17

1058 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 i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $394Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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