CrucialCT250MX500SSD1
CrucialCT250BX100SSD1

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D TLC.

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

Real World Speed
Performance profile from 14,992 user samples
1,933 User Benchmarks
Best Bench: 104% 58GB free
Worst Bench: 61% 145GB free
Poor: 61% Great: 104%
SPEED RANK: 163rd / 927
13,059 User Benchmarks
Best Bench: 100% 20GB free
Worst Bench: 63% 75GB free
Poor: 63% Great: 100%
SPEED RANK: 206th / 927
Effective Speed
Effective SSD Speed
87 % +4% 83.4 %
Read
Avg. Sequential Read Speed
505 MB/s +1% 502 MB/s
Write
Avg. Sequential Write Speed
376 MB/s Slightly faster write speed.
+6%
354 MB/s
4K Read
Avg. 4K Random Read Speed
31.3 MB/s Faster random read.
+26%
24.8 MB/s
4K Write
Avg. 4K Random Write Speed
69.1 MB/s 77.2 MB/s Slightly faster random write.
+12%
Mixed
Avg. Sequential Mixed IO Speed
402 MB/s 412 MB/s +2%
4K Mixed
Avg. 4K Random Mixed IO Speed
28.9 MB/s Slightly faster random mixed IO.
+9%
26.6 MB/s
Read
Peak Sequential Read Speed
527 MB/s +0% 525 MB/s
Write
Peak Sequential Write Speed
399 MB/s Slightly faster peak write speed.
+8%
370 MB/s
4K Read
Peak 4K Random Read Speed
39.2 MB/s Faster peak random read.
+29%
30.3 MB/s
4K Write
Peak 4K Random Write Speed
92 MB/s 108 MB/s Faster peak random write.
+17%
Mixed
Peak Sequential Mixed IO Speed
422 MB/s 431 MB/s +2%
4K Mixed
Peak 4K Random Mixed IO Speed
41.8 MB/s Slightly faster peak random mixed IO.
+11%
37.7 MB/s
Market Share
Based on 6,800,424 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.41 % Much higher market share.
+58%
0.26 %
Value
Value For Money
106 % Much better value.
+52%
69.8 %
User Rating
UBM User Rating
70 % Slightly more popular.
+13%
62 %
Price
Price (score)
$73 Much cheaper.
+39%
$120
Age
Newest
5 Months Hugely more recent.
+88%
40 Months
DQ Read
Peak 4K-64Thread Read Speed
353 MB/s Faster peak deep queue read.
+27%
277 MB/s
DQ Write
Peak 4K-64Thread Write Speed
274 MB/s 309 MB/s Slightly faster peak deep queue write.
+13%
AS-SSD Total
AS-SSD Total Score
1,086 Pts Slightly stronger server IO.
+9%
1,001 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
74.4 MB/s +3% 72.3 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
159 MB/s Slightly faster deep queue read.
+7%
149 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
164 MB/s 193 MB/s Faster deep queue write.
+18%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
43.8 MB/s 45 MB/s +3%
Capacity
Capacity
250GB 250GB
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The MX500 is Crucial’s current flagship consumer SATA SSD featuring their latest second generation 64-layer 3D TLC NAND. It’s available in 250 GB, 500 GB, 1 TB and 2 TB capacities in a 2.5-inch form factor. All but the 2 TB version will also be available in M.2 (2280) form in the future. The MX500 features a Silicon Motion SM2258 controller which is a change from the Marvell 88SS1074 controller featured in the MX300 (it’s nearly two year old predecessor). Performance is around 30% better than on the MX300 which currently retails at the same price. The MX500 has an SLC cache which increases with drive capacity. Consequently, the larger capacities are better able to sustain high sequential write speeds. The 250 GB version has 250MB of SLC cache, the 500 GB has 512 MB, the 1 TB has 1 GB and the 2 TB has 2 GB. Extended sustained write performance tests show that even though speed does drop off after the cache has been exhausted, it is still maintained at very respectable levels. The MX500’s five year warranty is in line with Samsung’s 850 Evo and exceeds it in terms of endurance (just 75 TBW for the 250 GB 850 Evo versus 100 TBW for the 250 GB MX500). It doesn’t quite match up to the Samsung’s 850 Evo’s performance (effective speed 8% slower), however at current prices it is about 20% cheaper, and on balance offers better value for money. [Mar '18 SSDrivePro]

MORE DETAILS

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) May 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

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CPUGPUSSD
AMD Ryzen 5 1600 $167Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $292Samsung 850 Evo 500GB $140
Intel Core i7-7700K $285AMD RX 480 $300Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $960SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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