CrucialCT250BX100SSD1
SamsungMZ-7PD256BW

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

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC.

Real World Speed
Performance profile from 24,712 user samples
8,104 User Benchmarks
Best Bench: 102% 118GB free
Worst Bench: 67% 51GB free
Poor: 67% Great: 102%
SPEED RANK: 115th / 859
16,608 User Benchmarks
Best Bench: 107% 24GB free
Worst Bench: 55% 132GB free
Poor: 55% Great: 107%
SPEED RANK: 138th / 859
Effective Speed
Effective SSD Speed
86.6 % +3% 83.6 % -3%
Read
Avg. Sequential Read Speed
504 MB/s +3% 488 MB/s -3%
Write
Avg. Sequential Write Speed
357 MB/s -1% 359 MB/s +1%
4K Read
Avg. 4K Random Read Speed
25.5 MB/s -13% 28.8 MB/s Slightly faster random read.
+13%
4K Write
Avg. 4K Random Write Speed
81 MB/s +3% 78.5 MB/s -3%
Mixed
Avg. Sequential Mixed IO Speed
413 MB/s Slightly faster mixed IO speed.
+6%
390 MB/s -6%
4K Mixed
Avg. 4K Random Mixed IO Speed
28.7 MB/s Faster random mixed IO.
+30%
22.1 MB/s -30%
Read
Peak Sequential Read Speed
525 MB/s +0% 524 MB/s -0%
Write
Peak Sequential Write Speed
370 MB/s -33% 493 MB/s Much faster peak write speed.
+33%
4K Read
Peak 4K Random Read Speed
31 MB/s -17% 36.4 MB/s Faster peak random read.
+17%
4K Write
Peak 4K Random Write Speed
115 MB/s -2% 117 MB/s +2%
Mixed
Peak Sequential Mixed IO Speed
431 MB/s -18% 509 MB/s Faster peak mixed IO speed.
+18%
4K Mixed
Peak 4K Random Mixed IO Speed
38.3 MB/s Much faster peak random mixed IO.
+34%
28.6 MB/s -34%
Market Share
Based on 3,849,165 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.4 % -100% 0.8 % Hugely higher market share.
+100%
Value
Value For Money
70.7 % Much better value.
+60%
44.1 % -60%
User Rating
UBM User Rating
62 % -3% 64 % +3%
Price
Price (score)
$124 Much cheaper.
+46%
$228 -46%
Age
Newest
32 Months Much more recent.
+46%
59 Months -46%
DQ Read
Peak 4K-64Thread Read Speed
278 MB/s -34% 373 MB/s Much faster peak deep queue read.
+34%
DQ Write
Peak 4K-64Thread Write Speed
312 MB/s -2% 319 MB/s +2%
AS-SSD Total
AS-SSD Total Score
1014 Pts -18% 1,195 Pts Stronger server IO.
+18%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.4 MB/s -24% 89.8 MB/s Faster peak deep queue mixed IO.
+24%
ADQ Read
Avg. 4K-64Thread Read Speed
176 MB/s -13% 199 MB/s Slightly faster deep queue read.
+13%
ADQ Write
Avg. 4K-64Thread Write Speed
215 MB/s Slightly faster deep queue write.
+14%
188 MB/s -14%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
51 MB/s -6% 53.9 MB/s Slightly faster deep queue mixed IO.
+6%
Capacity
Capacity
250GB 256GB
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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

The 840 Pro is stunning. Samsung have created a completely in-house package including both the controller and their own new 21nm toggle mode NAND. On release (Oct '12) this was the fastest performing deep queue depth consumer grade SSD available. Fast forward six months (Apr '13) and the 840 Pro still holds both the random read/write deep queue depth speed records of 384 MB/s and 326 MB/s, impressive considering how fast the SSD space tends to move. There are no obvious weaknesses, in-fact the 840 pro takes first place in nearly all of the speed categories and is only seriously rivalled by one drive, the OCZ Vector. To conclude, in terms of both outright performance, particularly server orientated, and value for money the 256GB and 128GB 840 Pros are amongst the top handful of drives currently available. [Jun '13 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) September 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

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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

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CPUGPUSSD
Intel Core i7-7700K $297Nvidia GTX 1070 $410Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $270AMD RX 480 $350Samsung 850 Pro 256GB $120
Intel Core i5-7600K $220Nvidia GTX 1060-6GB $265Samsung 850 Evo 500GB $149
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $724SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $152SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $40HyperX Fury DDR4 2133 C14 2x8GB $141SanDisk Extreme 16GB $20
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