SamsungMZ-7PD256BW
CrucialCT250MX200SSD1
$134

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

 $134 

Controller: Marvell 88SS9189. Flash Memory: Micron 16nm MLC. Release date: Q1 2015.

Real World Speed
Performance profile from 44,944 user samples
34,589 User Benchmarks
Best Bench: 116% 238GB free
Worst Bench: 62% 105GB free (System drive)
Poor: 62% Great: 116%
SPEED RANK: 228th / 992
10,355 User Benchmarks
Best Bench: 111% 195GB free
Worst Bench: 69% 69GB free
Poor: 69% Great: 111%
SPEED RANK: 202nd / 992
Effective Speed
Effective SSD Speed
91.5 % 94.4 % +3%
Read
Avg. Sequential Read Speed
454 MB/s Slightly faster read speed.
+6%
428 MB/s
Write
Avg. Sequential Write Speed
357 MB/s 408 MB/s Slightly faster write speed.
+14%
4K Read
Avg. 4K Random Read Speed
30.2 MB/s Slightly faster random read.
+8%
28 MB/s
4K Write
Avg. 4K Random Write Speed
84.1 MB/s 89.3 MB/s Slightly faster random write.
+6%
Mixed
Avg. Sequential Mixed IO Speed
289 MB/s 337 MB/s Faster mixed IO speed.
+17%
4K Mixed
Avg. 4K Random Mixed IO Speed
38.2 MB/s 39.5 MB/s +3%
SusWrite
Avg. Sustained Write Speed
284 MB/s 335 MB/s Faster sustained write speed.
+18%
Read
Peak Sequential Read Speed
509 MB/s Slightly faster peak read speed.
+9%
468 MB/s
Write
Peak Sequential Write Speed
480 MB/s +3% 467 MB/s
4K Read
Peak 4K Random Read Speed
36.3 MB/s Slightly faster peak random read.
+10%
33 MB/s
4K Write
Peak 4K Random Write Speed
117 MB/s 120 MB/s +3%
Mixed
Peak Sequential Mixed IO Speed
355 MB/s 381 MB/s Slightly faster peak mixed IO speed.
+7%
4K Mixed
Peak 4K Random Mixed IO Speed
46.8 MB/s 48.1 MB/s +3%
SusWrite
Peak Sequential Sustained Write 60s Average
477 MB/s Slightly faster peak sustained write speed.
+8%
441 MB/s
Market Share
Based on 12,966,448 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.27 % Hugely higher market share.
+238%
0.08 %
Value
Value For Money
78 % Slightly better value.
+7%
72.8 %
User Rating
UBM User Rating
63 % 67 % Slightly more popular.
+6%
Price
Price (score)
$120 Slightly cheaper.
+11%
$134
Age
Newest
77 Months 50 Months Much more recent.
+35%
DQ Read
Peak 4K-64Thread Read Speed
384 MB/s +2% 378 MB/s
DQ Write
Peak 4K-64Thread Write Speed
333 MB/s 363 MB/s Slightly faster peak deep queue write.
+9%
AS-SSD Total
AS-SSD Total Score
1,222 Pts 1,233 Pts +1%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
175 MB/s 257 MB/s Much faster peak deep queue mixed IO.
+47%
ADQ Read
Avg. 4K-64Thread Read Speed
334 MB/s Slightly faster deep queue read.
+8%
309 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
256 MB/s 296 MB/s Faster deep queue write.
+16%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
139 MB/s 212 MB/s Much faster deep queue mixed IO.
+53%
Capacity
Capacity
256GB 250GB
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The 840 Pro is stunning. Samsung have created a completely in-house package including both the controller and their own new 21nm toggle mode NAND. On release (Oct '12) this was the fastest performing deep queue depth consumer grade SSD available. Fast forward six months (Apr '13) and the 840 Pro still holds both the random read/write deep queue depth speed records of 384 MB/s and 326 MB/s, impressive considering how fast the SSD space tends to move. There are no obvious weaknesses, in-fact the 840 pro takes first place in nearly all of the speed categories and is only seriously rivalled by one drive, the OCZ Vector. To conclude, in terms of both outright performance, particularly server orientated, and value for money the 256GB and 128GB 840 Pros are amongst the top handful of drives currently available. [Jun '13 SSDrivePro]

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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) March 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

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The Best.
CPUGPUSSD
Intel Core i7-8700K $370Nvidia GTX 1070 $364Samsung 850 Evo 250GB $75
AMD Ryzen 5 1600 $120Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $105
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $105SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $761SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $110SanDisk Ultra Fit 32GB $12
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