SamsungMZ-75E250B
CrucialCT250BX100SSD1

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND

Controller: Silicon Motion SM2246EN. Flash Memory: Micron 16nm MLC.

Real World Speed
Performance profile from 294,995 user samples
282,195 User Benchmarks
Best Bench: 115% 166GB free
Worst Bench: 69% 34GB free
Poor: 69% Great: 115%
SPEED RANK: 110th / 921
12,800 User Benchmarks
Best Bench: 100% 26GB free
Worst Bench: 63% 142GB free
Poor: 63% Great: 100%
SPEED RANK: 192nd / 921
Effective Speed
Effective SSD Speed
94.4 % Slightly faster effective speed.
+13%
83.8 %
Read
Avg. Sequential Read Speed
500 MB/s 500 MB/s
Write
Avg. Sequential Write Speed
396 MB/s Slightly faster write speed.
+11%
356 MB/s
4K Read
Avg. 4K Random Read Speed
37.3 MB/s Much faster random read.
+50%
24.9 MB/s
4K Write
Avg. 4K Random Write Speed
75.1 MB/s 78.4 MB/s +4%
Mixed
Avg. Sequential Mixed IO Speed
403 MB/s 412 MB/s +2%
4K Mixed
Avg. 4K Random Mixed IO Speed
33.1 MB/s Faster random mixed IO.
+22%
27.1 MB/s
Read
Peak Sequential Read Speed
517 MB/s 524 MB/s +1%
Write
Peak Sequential Write Speed
417 MB/s Slightly faster peak write speed.
+13%
370 MB/s
4K Read
Peak 4K Random Read Speed
46.9 MB/s Much faster peak random read.
+55%
30.3 MB/s
4K Write
Peak 4K Random Write Speed
103 MB/s 110 MB/s Slightly faster peak random write.
+7%
Mixed
Peak Sequential Mixed IO Speed
422 MB/s 432 MB/s +2%
4K Mixed
Peak 4K Random Mixed IO Speed
47.9 MB/s Faster peak random mixed IO.
+27%
37.8 MB/s
Market Share
Based on 6,466,514 SSDs tested.
Market Share
Market Share (trailing 30 days)
6.66 % Insanely higher market share.
+2,197%
0.29 %
Value
Value For Money
98.1 % Much better value.
+53%
64.3 %
User Rating
UBM User Rating
129 % Hugely more popular.
+108%
62 %
Price
Price (score)
$90 Much cheaper.
+33%
$135
Age
Newest
40 Months 39 Months +2%
DQ Read
Peak 4K-64Thread Read Speed
371 MB/s Much faster peak deep queue read.
+35%
275 MB/s
DQ Write
Peak 4K-64Thread Write Speed
279 MB/s 311 MB/s Slightly faster peak deep queue write.
+11%
AS-SSD Total
AS-SSD Total Score
1,147 Pts Slightly stronger server IO.
+14%
1002 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
121 MB/s Much faster peak deep queue mixed IO.
+67%
72.3 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
190 MB/s Much faster deep queue read.
+30%
146 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
180 MB/s 195 MB/s Slightly faster deep queue write.
+8%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
67.7 MB/s Much faster deep queue mixed IO.
+42%
47.7 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]

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Solid State Drive Rankings (Price vs Performance) April 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $90
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $290Samsung 850 Evo 500GB $136
AMD Ryzen 5 1600 $176AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $36Corsair Vengeance LPX DDR4 3200 C16 2x8GB $193SanDisk Ultra Fit 32GB $12
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