CrucialCT240BX300SSD1
AdataASU800SS-128GT-C

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D MLC. Release date: Q3 2017.

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Controller: Silicon Motion SM2258. Flash Memory: Micron 3D TLC NAND. Release date: Q3 2016.

Real World Speed
Performance profile from 21,228 user samples
4,049 User Benchmarks
Best Bench: 115% 157GB free (System drive)
Worst Bench: 62% 96GB free (System drive)
Poor: 62% Great: 115%
SPEED RANK: 230th / 1018
17,179 User Benchmarks
Best Bench: 111% 76GB free
Worst Bench: 51% 17GB free
Poor: 51% Great: 111%
SPEED RANK: 406th / 1018
Effective Speed
Effective SSD Speed
94.3 % Faster effective speed.
+16%
81.4 %
Read
Avg. Sequential Read Speed
473 MB/s 475 MB/s +0%
Write
Avg. Sequential Write Speed
407 MB/s Much faster write speed.
+31%
310 MB/s
4K Read
Avg. 4K Random Read Speed
27.7 MB/s 29.7 MB/s Slightly faster random read.
+7%
4K Write
Avg. 4K Random Write Speed
80.8 MB/s +2% 79 MB/s
Mixed
Avg. Sequential Mixed IO Speed
367 MB/s Faster mixed IO speed.
+17%
314 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
39.5 MB/s +1% 39 MB/s
SusWrite
Avg. Sustained Write Speed
348 MB/s Hugely faster sustained write speed.
+80%
193 MB/s
Read
Peak Sequential Read Speed
514 MB/s 515 MB/s +0%
Write
Peak Sequential Write Speed
472 MB/s Slightly faster peak write speed.
+6%
444 MB/s
4K Read
Peak 4K Random Read Speed
33.8 MB/s 39.7 MB/s Faster peak random read.
+17%
4K Write
Peak 4K Random Write Speed
124 MB/s Slightly faster peak random write.
+7%
116 MB/s
Mixed
Peak Sequential Mixed IO Speed
444 MB/s +3% 431 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
51.5 MB/s 53.2 MB/s +3%
SusWrite
Peak Sequential Sustained Write 60s Average
445 MB/s Slightly faster peak sustained write speed.
+12%
399 MB/s
Market Share
Based on 23,902,452 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.03 % 0.16 % Hugely higher market share.
+433%
Value
Value For Money
16.9 % 18.1 % Slightly better value.
+7%
User Rating
UBM User Rating
54 % 59 % Slightly more popular.
+9%
Price
Price (score)
$62 $25 Much cheaper.
+60%
Age
Newest
32 Months More recent.
+26%
43 Months
DQ Read
Peak 4K-64Thread Read Speed
317 MB/s Faster peak deep queue read.
+17%
271 MB/s
DQ Write
Peak 4K-64Thread Write Speed
362 MB/s +3% 351 MB/s
AS-SSD Total
AS-SSD Total Score
1,151 Pts Slightly stronger server IO.
+7%
1071 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
298 MB/s Faster peak deep queue mixed IO.
+26%
236 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
277 MB/s Hugely faster deep queue read.
+85%
150 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
273 MB/s Faster deep queue write.
+24%
220 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
241 MB/s Much faster deep queue mixed IO.
+80%
134 MB/s
Capacity
Capacity
240GB 128GB
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Crucial’s BX300 SSD is a 3D MLC entry level SSD, with debut pricing in line with the Samsung's 850 Evo, the current market leader. The BX300 is one of the faster consumer SSDs available, with a 2% performance improvement over Crucial’s older MLC based MX200 and a 25% performance improvement over the TLC based MX300 which are both from Crucial’s more expensive MX product line. MLC NAND offers more consistent performance and has higher endurance than TLC NAND. Although Samsung’s 850 Evo (which is based on proprietary TLC V-NAND) has a 10% effective speed advantage over the BX300 the BX300 wins on write consistency. The 240GB BX300 has a three year warranty or 80 Terabytes Written (TBW) compared to five years or 75 (TBW) for the 250 GB 850 Evo. This makes for an interesting choice between the BX300 and the 850 Evo. Each model has an SLC cache which is proportional to its capacity, as a result the larger capacities offer better performance. The 120 GB BX300 has a 4 GB SLC cache, the 240 GB has 8 GB and the 480 GB has 16 GB. SLC caches improve burst write performance beyond the already respectable MLC write performance. Unfortunately, at least for now, the BX300 only comes in modest capacities, with the largest being 480 GB. For write consistency, thanks to its MLC NAND, the BX300 punches well above its price point. [Nov '17 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) April 2020 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]

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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 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.
  • - 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.
  • - Share your opinion by voting.

 Frequently Asked Questions

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CPUGPUSSD
Intel Core i5-9400F $146Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $210Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
AMD Ryzen 5 3600 $175Nvidia RTX 2070S (Super) $505Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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