SamsungMZ-7KE256BW
CrucialCT250MX200SSD1

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND

Controller: Marvell 88SS9189. Flash Memory: Micron 16nm MLC.

Real World Speed
Performance profile from 29,513 user samples
24,757 User Benchmarks
Best Bench: 123% 172GB free
Worst Bench: 70% 165GB free
Poor: 70% Great: 123%
SPEED RANK: 58th / 857
4,756 User Benchmarks
Best Bench: 102% 83GB free
Worst Bench: 60% 167GB free
Poor: 60% Great: 102%
SPEED RANK: 140th / 857
Effective Speed
Effective SSD Speed
100 % Faster effective speed.
+20%
83.7 % -20%
Read
Avg. Sequential Read Speed
504 MB/s -0% 505 MB/s +0%
Write
Avg. Sequential Write Speed
443 MB/s Faster write speed.
+21%
366 MB/s -21%
4K Read
Avg. 4K Random Read Speed
33.4 MB/s Faster random read.
+23%
27.1 MB/s -23%
4K Write
Avg. 4K Random Write Speed
90.7 MB/s Faster random write.
+26%
72 MB/s -26%
Mixed
Avg. Sequential Mixed IO Speed
462 MB/s Faster mixed IO speed.
+24%
374 MB/s -24%
4K Mixed
Avg. 4K Random Mixed IO Speed
34.4 MB/s Much faster random mixed IO.
+41%
24.4 MB/s -41%
Read
Peak Sequential Read Speed
529 MB/s +0% 528 MB/s -0%
Write
Peak Sequential Write Speed
503 MB/s Faster peak write speed.
+26%
400 MB/s -26%
4K Read
Peak 4K Random Read Speed
43.1 MB/s Faster peak random read.
+30%
33.2 MB/s -30%
4K Write
Peak 4K Random Write Speed
131 MB/s Faster peak random write.
+28%
102 MB/s -28%
Mixed
Peak Sequential Mixed IO Speed
514 MB/s Faster peak mixed IO speed.
+24%
416 MB/s -24%
4K Mixed
Peak 4K Random Mixed IO Speed
50.5 MB/s Much faster peak random mixed IO.
+45%
34.8 MB/s -45%
Market Share
Based on 3,531,581 SSDs tested.
Market Share
Market Share (trailing 30 days)
1.42 % Hugely higher market share.
+426%
0.27 % -426%
Value
Value For Money
82.2 % Much better value.
+43%
57.6 % -43%
User Rating
UBM User Rating
96 % Much more popular.
+41%
68 % -41%
Price
Price (score)
$126 Cheaper.
+19%
$156 -19%
Age
Newest
37 Months -16% 31 Months More recent.
+16%
DQ Read
Peak 4K-64Thread Read Speed
381 MB/s Slightly faster peak deep queue read.
+7%
357 MB/s -7%
DQ Write
Peak 4K-64Thread Write Speed
343 MB/s Faster peak deep queue write.
+24%
277 MB/s -24%
AS-SSD Total
AS-SSD Total Score
1,260 Pts Stronger server IO.
+15%
1,094 Pts -15%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
165 MB/s Hugely faster peak deep queue mixed IO.
+147%
66.8 MB/s -147%
ADQ Read
Avg. 4K-64Thread Read Speed
209 MB/s Slightly faster deep queue read.
+13%
185 MB/s -13%
ADQ Write
Avg. 4K-64Thread Write Speed
222 MB/s Faster deep queue write.
+26%
176 MB/s -26%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
88.4 MB/s Hugely faster deep queue mixed IO.
+112%
41.7 MB/s -112%
Capacity
Capacity
256GB 250GB
ADVERTISEMENT

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

The 250GB Crucial MX200 is successor to the hugely successful MX100. Both drives use the same NAND and controller but the new MX200 features Dynamic Write Acceleration (DWA) which is a new dynamically sized SLC cache. Samsung were the first to introduce SLC caching on the 840 Evo nearly two years ago so Crucial are somewhat late to the party. SLC caches generally only help performance in corner case real word scenarios and benchmarks. I prefer drives without SLC caches because they offer more consistent and sustainable real world IO. Comparing the MX100 and MX200 shows that the newer MX200 has a significantly faster peak write speed which is of course explained by the new DWA cache. Price is the deciding factor between the MX100 and MX200 so although the MX200 isn't priced aggressively yet, it will almost certainly move up the value rankings when retailers build stocks and subsequently cut prices. [Feb '15 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) August 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]

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 i7-7700K $298Nvidia GTX 1070 $410Samsung 850 Evo 250GB $100
AMD Ryzen 7 1700 $280AMD RX 480 $390Samsung 850 Pro 256GB $126
Intel Core i5-7600K $212Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $168
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $718SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $57HyperX Fury DDR4 2133 C14 2x8GB $140SanDisk Ultra Fit 32GB $13
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