CrucialCT525MX300SSD4
SamsungMZ-7KE256BW

Release date ≈ Q3 2016.

VS
About

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND. Release date: Q3 2014.

Real World Speed
Performance profile from 87,083 user samples
9,262 User Benchmarks
Best Bench: 99% 377GB free
Worst Bench: 61% 291GB free (System drive)
Poor: 61% Great: 99%
SPEED RANK: 326th / 1011
77,821 User Benchmarks
Best Bench: 125% 208GB free
Worst Bench: 71% 164GB free (System drive)
Poor: 71% Great: 125%
SPEED RANK: 197th / 1011
Effective Speed
Effective SSD Speed
85.8 % 103 % Faster effective speed.
+20%
Read
Avg. Sequential Read Speed
403 MB/s 475 MB/s Faster read speed.
+18%
Write
Avg. Sequential Write Speed
400 MB/s 409 MB/s +2%
4K Read
Avg. 4K Random Read Speed
24.3 MB/s 33.7 MB/s Much faster random read.
+39%
4K Write
Avg. 4K Random Write Speed
87.4 MB/s 91.1 MB/s +4%
Mixed
Avg. Sequential Mixed IO Speed
345 MB/s +2% 339 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
35.4 MB/s 43.9 MB/s Faster random mixed IO.
+24%
SusWrite
Avg. Sustained Write Speed
287 MB/s 360 MB/s Faster sustained write speed.
+25%
Read
Peak Sequential Read Speed
452 MB/s 516 MB/s Slightly faster peak read speed.
+14%
Write
Peak Sequential Write Speed
479 MB/s 489 MB/s +2%
4K Read
Peak 4K Random Read Speed
28.6 MB/s 43.9 MB/s Much faster peak random read.
+53%
4K Write
Peak 4K Random Write Speed
120 MB/s 127 MB/s Slightly faster peak random write.
+6%
Mixed
Peak Sequential Mixed IO Speed
388 MB/s +1% 384 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
42.8 MB/s 57.2 MB/s Much faster peak random mixed IO.
+34%
SusWrite
Peak Sequential Sustained Write 60s Average
327 MB/s 484 MB/s Much faster peak sustained write speed.
+48%
Market Share
Based on 18,525,148 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.06 % 0.38 % Hugely higher market share.
+533%
Value
Value For Money
25.9 % Hugely better value.
+220%
8.09 %
User Rating
UBM User Rating
50 % 96 % Hugely more popular.
+92%
Price
Price (score)
$68 Much cheaper.
+66%
$199
Age
Newest
37+ Months Much more recent.
+41%
63 Months
DQ Read
Peak 4K-64Thread Read Speed
351 MB/s 388 MB/s Slightly faster peak deep queue read.
+11%
DQ Write
Peak 4K-64Thread Write Speed
327 MB/s 354 MB/s Slightly faster peak deep queue write.
+8%
AS-SSD Total
AS-SSD Total Score
1,148 Pts 1,276 Pts Slightly stronger server IO.
+11%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
323 MB/s 358 MB/s Slightly faster peak deep queue mixed IO.
+11%
ADQ Read
Avg. 4K-64Thread Read Speed
300 MB/s 337 MB/s Slightly faster deep queue read.
+12%
ADQ Write
Avg. 4K-64Thread Write Speed
269 MB/s 297 MB/s Slightly faster deep queue write.
+10%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
271 MB/s 299 MB/s Slightly faster deep queue mixed IO.
+10%
Capacity
Capacity
525GB 256GB
ADVERTISEMENT

There's nothing inherently wrong with it. It does what it's supposed to do, it's M.2. The reason I chose this at the time was because I trusted the manufacturing tolerances of Micron, and I thought that other brands were overrated. It saves space, because it can be mounted directly onto the motherboard, in one way or the other. Of course...If I had just waited a little longer I could have bought the new MX500 series SSD, but they don't have any M.2 format drives released yet and there isn't much of significant difference; which is a higher read speed of 560 MB/s and 5 year warranty. The 3 year warranty and read speed of 530 MB/s is just fine! [Dec '17 morahman7vn]

MORE DETAILS

The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) October 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 i5-9400F $145Nvidia GTX 1660 $210Samsung 850 Evo 250GB $57
Intel Core i5-9600K $240Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $107
Intel Core i7-9700K $350Nvidia RTX 2060 $349Samsung 850 Pro 256GB $199
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $78G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $83SanDisk Ultra Fit 32GB $14
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