SamsungMZ-75E250B
CrucialCT250BX100SSD1

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

Controller: Silicon Motion SM2246EN. Flash Memory: Micron 16nm MLC. Release date: Q1 2015.

Real World Speed
Performance profile from 427,946 user samples
411,158 User Benchmarks
Best Bench: 124% 206GB free
Worst Bench: 73% 64GB free (System drive)
Poor: 73% Great: 124%
SPEED RANK: 168th / 992
16,788 User Benchmarks
Best Bench: 106% 128GB free
Worst Bench: 58% 51GB free
Poor: 58% Great: 106%
SPEED RANK: 271st / 992
Effective Speed
Effective SSD Speed
105 % Faster effective speed.
+19%
87.8 %
Read
Avg. Sequential Read Speed
468 MB/s 474 MB/s +1%
Write
Avg. Sequential Write Speed
440 MB/s Faster write speed.
+26%
350 MB/s
4K Read
Avg. 4K Random Read Speed
39.6 MB/s Much faster random read.
+50%
26.4 MB/s
4K Write
Avg. 4K Random Write Speed
98.2 MB/s Faster random write.
+22%
80.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed
373 MB/s Faster mixed IO speed.
+30%
288 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
53.1 MB/s Much faster random mixed IO.
+45%
36.5 MB/s
SusWrite
Avg. Sustained Write Speed
249 MB/s 282 MB/s Slightly faster sustained write speed.
+13%
Read
Peak Sequential Read Speed
506 MB/s 515 MB/s +2%
Write
Peak Sequential Write Speed
492 MB/s Much faster peak write speed.
+33%
371 MB/s
4K Read
Peak 4K Random Read Speed
48.1 MB/s Much faster peak random read.
+55%
31 MB/s
4K Write
Peak 4K Random Write Speed
132 MB/s Slightly faster peak random write.
+13%
117 MB/s
Mixed
Peak Sequential Mixed IO Speed
415 MB/s Faster peak mixed IO speed.
+22%
339 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
65.6 MB/s Much faster peak random mixed IO.
+45%
45.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
328 MB/s 363 MB/s Slightly faster peak sustained write speed.
+11%
Market Share
Based on 12,952,740 SSDs tested.
Market Share
Market Share (trailing 30 days)
3.61 % Insanely higher market share.
+1,800%
0.19 %
Value
Value For Money
139 % Hugely better value.
+99%
69.7 %
User Rating
UBM User Rating
126 % Hugely more popular.
+100%
63 %
Price
Price (score)
$65 Much cheaper.
+50%
$129
Age
Newest
51 Months 50 Months +2%
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s Much faster peak deep queue read.
+37%
281 MB/s
DQ Write
Peak 4K-64Thread Write Speed
361 MB/s Slightly faster peak deep queue write.
+12%
323 MB/s
AS-SSD Total
AS-SSD Total Score
1,293 Pts Stronger server IO.
+25%
1,031 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
368 MB/s Hugely faster peak deep queue mixed IO.
+86%
198 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
344 MB/s Much faster deep queue read.
+34%
256 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
311 MB/s Slightly faster deep queue write.
+11%
281 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
320 MB/s Hugely faster deep queue mixed IO.
+89%
169 MB/s
Capacity
Capacity
250GB 250GB
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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]

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The 250GB Crucial BX100 SSD is the value orientated variant of Crucial's M range of SSDs. The BX100 uses the same NAND as its premium MX200 sibling but the BX100 uses a Silicon Motion controller as opposed to the Marvel controller found in the MX range. Feature wise the BX100 is missing SLC caching and there is no hardware encryption (so security frameworks such as windows Bitlocker will operate less efficiently). In terms of I/O performance the BX100 looks promising. Comparing the BX100 and MX100 shows that the newer BX100 may be faster than its predecessor but as yet there are insufficient user benchmarks to draw any definitive conclusions. The BX100 has only just started hitting the shelves so there's plenty of room for price reductions from its already reasonable price tag. I will revisit this review when I have more performance data for the BX100. [Jan '15 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) March 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 $370Nvidia GTX 1070 $364Samsung 850 Evo 250GB $65
AMD Ryzen 5 1600 $120Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $105
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $105SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $761SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $110SanDisk Ultra Fit 32GB $12
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