CrucialCT275MX300SSD1
CrucialCT240BX300SSD1

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC. Release date: Q2 2016.

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

Real World Speed
Performance profile from 25,387 user samples
23,386 User Benchmarks
Best Bench: 94% 166GB free (System drive)
Worst Bench: 54% 28GB free (System drive)
Poor: 54% Great: 94%
SPEED RANK: 390th / 980
2,001 User Benchmarks
Best Bench: 117% 64GB free
Worst Bench: 71% 51GB free
Poor: 71% Great: 117%
SPEED RANK: 181st / 980
Effective Speed
Effective SSD Speed
79.2 % 96.5 % Faster effective speed.
+22%
Read
Avg. Sequential Read Speed
428 MB/s 470 MB/s Slightly faster read speed.
+10%
Write
Avg. Sequential Write Speed
379 MB/s 411 MB/s Slightly faster write speed.
+8%
4K Read
Avg. 4K Random Read Speed
24 MB/s 28.2 MB/s Faster random read.
+18%
4K Write
Avg. 4K Random Write Speed
86.5 MB/s +2% 84.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed
331 MB/s 368 MB/s Slightly faster mixed IO speed.
+11%
4K Mixed
Avg. 4K Random Mixed IO Speed
33.6 MB/s 40.7 MB/s Faster random mixed IO.
+21%
SusWrite
Avg. Sustained Write Speed
217 MB/s 353 MB/s Much faster sustained write speed.
+63%
Read
Peak Sequential Read Speed
471 MB/s 514 MB/s Slightly faster peak read speed.
+9%
Write
Peak Sequential Write Speed
478 MB/s +1% 471 MB/s
4K Read
Peak 4K Random Read Speed
28.4 MB/s 34 MB/s Faster peak random read.
+20%
4K Write
Peak 4K Random Write Speed
120 MB/s 127 MB/s Slightly faster peak random write.
+6%
Mixed
Peak Sequential Mixed IO Speed
400 MB/s 441 MB/s Slightly faster peak mixed IO speed.
+10%
4K Mixed
Peak 4K Random Mixed IO Speed
41.5 MB/s 52 MB/s Faster peak random mixed IO.
+25%
SusWrite
Peak Sequential Sustained Write 60s Average
266 MB/s 444 MB/s Much faster peak sustained write speed.
+67%
Market Share
Based on 11,379,803 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.33 % Hugely higher market share.
+450%
0.06 %
Value
Value For Money
92.2 % 182 % Hugely better value.
+97%
User Rating
UBM User Rating
66 % More popular.
+25%
53 %
Price
Price (score)
$85 $39 Much cheaper.
+54%
Age
Newest
31 Months 17 Months Much more recent.
+45%
DQ Read
Peak 4K-64Thread Read Speed
236 MB/s 318 MB/s Much faster peak deep queue read.
+35%
DQ Write
Peak 4K-64Thread Write Speed
326 MB/s 361 MB/s Slightly faster peak deep queue write.
+11%
AS-SSD Total
AS-SSD Total Score
976 Pts 1,155 Pts Stronger server IO.
+18%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
306 MB/s +3% 298 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
210 MB/s 287 MB/s Much faster deep queue read.
+37%
ADQ Write
Avg. 4K-64Thread Write Speed
262 MB/s 285 MB/s Slightly faster deep queue write.
+9%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
245 MB/s 252 MB/s +3%
Capacity
Capacity
275GB 240GB
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The 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]

MORE DETAILS

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) January 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]

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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 i7-8700K $363Nvidia GTX 1070 $350Samsung 850 Evo 250GB $63
AMD Ryzen 5 1600 $149Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $90
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $115SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $780SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $125SanDisk Ultra Fit 32GB $12
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