SamsungMZ-75E250B
CrucialCT240BX300SSD1

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

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

Real World Speed
Performance profile from 352,191 user samples
350,190 User Benchmarks
Best Bench: 125% 232GB free
Worst Bench: 69% 36GB free (System drive)
Poor: 69% Great: 125%
SPEED RANK: 156th / 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
105 % Slightly faster effective speed.
+9%
96.5 %
Read
Avg. Sequential Read Speed
467 MB/s 470 MB/s +1%
Write
Avg. Sequential Write Speed
439 MB/s Slightly faster write speed.
+7%
411 MB/s
4K Read
Avg. 4K Random Read Speed
39.8 MB/s Much faster random read.
+41%
28.2 MB/s
4K Write
Avg. 4K Random Write Speed
99.7 MB/s Faster random write.
+18%
84.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed
370 MB/s +1% 368 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
53.5 MB/s Much faster random mixed IO.
+31%
40.7 MB/s
SusWrite
Avg. Sustained Write Speed
251 MB/s 353 MB/s Much faster sustained write speed.
+41%
Read
Peak Sequential Read Speed
507 MB/s 514 MB/s +1%
Write
Peak Sequential Write Speed
491 MB/s +4% 471 MB/s
4K Read
Peak 4K Random Read Speed
48.3 MB/s Much faster peak random read.
+42%
34 MB/s
4K Write
Peak 4K Random Write Speed
134 MB/s Slightly faster peak random write.
+6%
127 MB/s
Mixed
Peak Sequential Mixed IO Speed
413 MB/s 441 MB/s Slightly faster peak mixed IO speed.
+7%
4K Mixed
Peak 4K Random Mixed IO Speed
66.1 MB/s Faster peak random mixed IO.
+27%
52 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
329 MB/s 444 MB/s Much faster peak sustained write speed.
+35%
Market Share
Based on 11,380,275 SSDs tested.
Market Share
Market Share (trailing 30 days)
3.97 % Insanely higher market share.
+6,517%
0.06 %
Value
Value For Money
143 % 182 % Better value.
+27%
User Rating
UBM User Rating
127 % Hugely more popular.
+140%
53 %
Price
Price (score)
$63 $39 Much cheaper.
+38%
Age
Newest
49 Months 17 Months Much more recent.
+65%
DQ Read
Peak 4K-64Thread Read Speed
387 MB/s Faster peak deep queue read.
+22%
318 MB/s
DQ Write
Peak 4K-64Thread Write Speed
355 MB/s 361 MB/s +2%
AS-SSD Total
AS-SSD Total Score
1,290 Pts Slightly stronger server IO.
+12%
1,155 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
367 MB/s Faster peak deep queue mixed IO.
+23%
298 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
344 MB/s Faster deep queue read.
+20%
287 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
314 MB/s Slightly faster deep queue write.
+10%
285 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
317 MB/s Faster deep queue mixed IO.
+26%
252 MB/s
Capacity
Capacity
250GB 240GB
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The 250GB Samsung 850 Evo has a similar architecture to its hugely successful predecessor, the 840 Evo. Both drives are TLC based but the 850 uses 3D V-NAND as opposed to regular NAND. Both drives also feature a Turbowrite cache (TWC) which buffers up to 3GB of writes. The TWC enables high burst write speeds but when the cache exhausts write speeds drop to 300 MB/s. Comparing the 850 and 840 Evos shows that effective speed, has improved by 11% and the warranty has been extended from three to five years but prices are also up by 11%. The 850 Evo does put in superb benchmarks (second only to the 850 Pro) but these are only valid within the TWC. At current price levels the 850 Evo struggles to compete with the value leaders[Dec '14 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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $363Nvidia GTX 1070 $300Samsung 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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