SamsungMZ-7KE256BW
CrucialCT250MX200SSD1
$134

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

 $134 

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

Real World Speed
Performance profile from 50,453 user samples
41,764 User Benchmarks
Best Bench: 121% 158GB free
Worst Bench: 68% 86GB free
Poor: 68% Great: 121%
SPEED RANK: 111th / 927
8,689 User Benchmarks
Best Bench: 101% 20GB free
Worst Bench: 59% 0GB free
Poor: 59% Great: 101%
SPEED RANK: 226th / 927
Effective Speed
Effective SSD Speed
97.6 % Faster effective speed.
+19%
81.8 %
Read
Avg. Sequential Read Speed
501 MB/s 502 MB/s +0%
Write
Avg. Sequential Write Speed
439 MB/s Faster write speed.
+20%
366 MB/s
4K Read
Avg. 4K Random Read Speed
32.3 MB/s Faster random read.
+22%
26.4 MB/s
4K Write
Avg. 4K Random Write Speed
86.6 MB/s Faster random write.
+27%
68.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed
457 MB/s Faster mixed IO speed.
+22%
374 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
33.6 MB/s Much faster random mixed IO.
+42%
23.6 MB/s
Read
Peak Sequential Read Speed
528 MB/s +0% 527 MB/s
Write
Peak Sequential Write Speed
503 MB/s Faster peak write speed.
+26%
399 MB/s
4K Read
Peak 4K Random Read Speed
43.2 MB/s Much faster peak random read.
+32%
32.7 MB/s
4K Write
Peak 4K Random Write Speed
121 MB/s Faster peak random write.
+26%
96.3 MB/s
Mixed
Peak Sequential Mixed IO Speed
513 MB/s Faster peak mixed IO speed.
+23%
416 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
50.5 MB/s Much faster peak random mixed IO.
+50%
33.7 MB/s
Market Share
Based on 6,826,358 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.71 % Hugely higher market share.
+373%
0.15 %
Value
Value For Money
66.1 % +5% 63.1 %
User Rating
UBM User Rating
99 % Much more popular.
+46%
68 %
Price
Price (score)
$163 $134 Cheaper.
+18%
Age
Newest
46 Months 40 Months Slightly more recent.
+13%
DQ Read
Peak 4K-64Thread Read Speed
378 MB/s Slightly faster peak deep queue read.
+7%
353 MB/s
DQ Write
Peak 4K-64Thread Write Speed
338 MB/s Faster peak deep queue write.
+25%
271 MB/s
AS-SSD Total
AS-SSD Total Score
1,241 Pts Stronger server IO.
+15%
1,075 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
162 MB/s Hugely faster peak deep queue mixed IO.
+144%
66.5 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
188 MB/s Slightly faster deep queue read.
+10%
171 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
211 MB/s Faster deep queue write.
+27%
166 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
83.3 MB/s Hugely faster deep queue mixed IO.
+105%
40.6 MB/s
Capacity
Capacity
256GB 250GB
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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) 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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $172Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $136
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 $961SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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