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 21,818 user samples
20,082 User Benchmarks
Best Bench: 94% 116GB free
Worst Bench: 57% 60GB free (System drive)
Poor: 57% Great: 94%
SPEED RANK: 330th / 959
1,736 User Benchmarks
Best Bench: 117% 99GB free
Worst Bench: 67% 134GB free (System drive)
Poor: 67% Great: 117%
SPEED RANK: 167th / 959
Effective Speed
Effective SSD Speed
80.3 % 94.9 % Faster effective speed.
+18%
Read
Avg. Sequential Read Speed
434 MB/s 471 MB/s Slightly faster read speed.
+9%
Write
Avg. Sequential Write Speed
379 MB/s 404 MB/s Slightly faster write speed.
+7%
4K Read
Avg. 4K Random Read Speed
24 MB/s 27.8 MB/s Faster random read.
+16%
4K Write
Avg. 4K Random Write Speed
88.7 MB/s Slightly faster random write.
+9%
81.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed
337 MB/s 369 MB/s Slightly faster mixed IO speed.
+9%
4K Mixed
Avg. 4K Random Mixed IO Speed
34.1 MB/s 39.5 MB/s Faster random mixed IO.
+16%
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
476 MB/s +0% 474 MB/s
4K Read
Peak 4K Random Read Speed
28.5 MB/s 34 MB/s Faster peak random read.
+19%
4K Write
Peak 4K Random Write Speed
120 MB/s 126 MB/s +5%
Mixed
Peak Sequential Mixed IO Speed
401 MB/s 442 MB/s Slightly faster peak mixed IO speed.
+10%
4K Mixed
Peak 4K Random Mixed IO Speed
41.9 MB/s 52.1 MB/s Faster peak random mixed IO.
+24%
SusWrite
Peak Sequential Sustained Write 60s Average
264 MB/s 446 MB/s Much faster peak sustained write speed.
+69%
Market Share
Based on 9,138,912 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.39 % Hugely higher market share.
+457%
0.07 %
Value
Value For Money
93.6 % 130 % Much better value.
+38%
User Rating
UBM User Rating
66 % More popular.
+25%
53 %
Price
Price (score)
$85 $60 Cheaper.
+29%
Age
Newest
28 Months 14 Months Much more recent.
+50%
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 359 MB/s Slightly faster peak deep queue write.
+10%
AS-SSD Total
AS-SSD Total Score
976 Pts 1,152 Pts Stronger server IO.
+18%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
306 MB/s +3% 297 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
214 MB/s 282 MB/s Much faster deep queue read.
+32%
ADQ Write
Avg. 4K-64Thread Write Speed
268 MB/s 284 MB/s Slightly faster deep queue write.
+6%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
250 MB/s +0% 249 MB/s
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) October 2018 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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The Best.
CPUGPUSSD
Intel Core i7-8700K $370Nvidia GTX 1070 $350Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $249Samsung 850 Evo 500GB $98
Intel Core i7-7700K $355AMD RX 480 $280Samsung 850 Pro 256GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 64GB $42
Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $157SanDisk Ultra Fit 32GB $12
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