CrucialCT250BX100SSD1
CrucialCT275MX300SSD1

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

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

Real World Speed
Performance profile from 30,612 user samples
13,059 User Benchmarks
Best Bench: 100% 20GB free
Worst Bench: 63% 75GB free
Poor: 63% Great: 100%
SPEED RANK: 206th / 927
17,553 User Benchmarks
Best Bench: 81% 206GB free
Worst Bench: 49% 96GB free
Poor: 49% Great: 81%
SPEED RANK: 427th / 927
Effective Speed
Effective SSD Speed
83.4 % Faster effective speed.
+22%
68.1 %
Read
Avg. Sequential Read Speed
502 MB/s Slightly faster read speed.
+8%
463 MB/s
Write
Avg. Sequential Write Speed
354 MB/s Faster write speed.
+18%
299 MB/s
4K Read
Avg. 4K Random Read Speed
24.8 MB/s Slightly faster random read.
+11%
22.4 MB/s
4K Write
Avg. 4K Random Write Speed
77.2 MB/s Much faster random write.
+34%
57.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed
412 MB/s Much faster mixed IO speed.
+34%
307 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
26.6 MB/s Much faster random mixed IO.
+56%
17 MB/s
Read
Peak Sequential Read Speed
525 MB/s Slightly faster peak read speed.
+8%
484 MB/s
Write
Peak Sequential Write Speed
370 MB/s Slightly faster peak write speed.
+9%
339 MB/s
4K Read
Peak 4K Random Read Speed
30.3 MB/s Slightly faster peak random read.
+11%
27.4 MB/s
4K Write
Peak 4K Random Write Speed
108 MB/s Much faster peak random write.
+36%
79.2 MB/s
Mixed
Peak Sequential Mixed IO Speed
431 MB/s Faster peak mixed IO speed.
+27%
339 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
37.7 MB/s Much faster peak random mixed IO.
+58%
23.9 MB/s
Market Share
Based on 6,800,424 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.26 % 0.52 % Hugely higher market share.
+100%
Value
Value For Money
69.8 % 80.8 % Better value.
+16%
User Rating
UBM User Rating
62 % 67 % Slightly more popular.
+8%
Price
Price (score)
$120 $83 Much cheaper.
+31%
Age
Newest
40 Months 23 Months Much more recent.
+42%
DQ Read
Peak 4K-64Thread Read Speed
277 MB/s Faster peak deep queue read.
+20%
230 MB/s
DQ Write
Peak 4K-64Thread Write Speed
309 MB/s Much faster peak deep queue write.
+42%
217 MB/s
AS-SSD Total
AS-SSD Total Score
1,001 Pts Stronger server IO.
+26%
795 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.3 MB/s Hugely faster peak deep queue mixed IO.
+80%
40.1 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
149 MB/s Faster deep queue read.
+20%
124 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
193 MB/s Much faster deep queue write.
+42%
136 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
45 MB/s Much faster deep queue mixed IO.
+76%
25.6 MB/s
Capacity
Capacity
250GB 275GB
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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 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 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
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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
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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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