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KingstonSA400S37/240G
CrucialCT250MX200SSD1
$134
▲ 54667 ▼

Controller: Phison PS3111-S11. Flash Memory: Toshiba 15nm TLC. Release date: Q1 2017.

VS
▲ 554,480 ▼
 $134 

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

Effective Speed 
+44%
Real World Speed
Performance profile from 450,652 user samples
Benchmark your SSD here
424,288 User Benchmarks
Best Bench: 100% 181GB free (System drive)
Worst Bench: 33% 119GB free (System drive)
Poor: 33% Great: 100%
SPEED RANK: 742nd / 1080
26,364 User Benchmarks
Best Bench: 113% 110GB free
Worst Bench: 69% 211GB free
Poor: 69% Great: 113%
SPEED RANK: 288th / 1080
Effective Speed
Effective SSD Speed 		65.8 % 94.8 % Much faster effective speed.
+44%
Average Score 
+41%
Read
Avg. Sequential Read Speed 		414 MB/s 426 MB/s +3%
Write
Avg. Sequential Write Speed 		318 MB/s 411 MB/s Faster write speed.
+29%
4K Read
Avg. 4K Random Read Speed 		26.7 MB/s 28 MB/s +5%
4K Write
Avg. 4K Random Write Speed 		56.9 MB/s 86.7 MB/s Much faster random write.
+52%
Mixed
Avg. Sequential Mixed IO Speed 		260 MB/s 342 MB/s Much faster mixed IO speed.
+32%
4K Mixed
Avg. 4K Random Mixed IO Speed 		22.4 MB/s 39.3 MB/s Much faster random mixed IO.
+75%
SusWrite
Avg. Sustained Write Speed 		179 MB/s 346 MB/s Hugely faster sustained write speed.
+93%
Peak Score 
+1%
Read
Peak Sequential Read Speed 		504 MB/s Slightly faster peak read speed.
+7% 		470 MB/s
Write
Peak Sequential Write Speed 		446 MB/s 470 MB/s Slightly faster peak write speed.
+5%
4K Read
Peak 4K Random Read Speed 		36.1 MB/s Faster peak random read.
+11% 		32.6 MB/s
4K Write
Peak 4K Random Write Speed 		106 MB/s 120 MB/s Faster peak random write.
+13%
Mixed
Peak Sequential Mixed IO Speed 		420 MB/s Slightly faster peak mixed IO speed.
+10% 		382 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		42 MB/s 47.7 MB/s Faster peak random mixed IO.
+14%
SusWrite
Peak Sequential Sustained Write 60s Average 		432 MB/s 458 MB/s Slightly faster peak sustained write speed.
+6%
Value & Sentiment 
+2,454%
Market Share
Based on 77,602,743 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.97 % Insanely higher market share.
+9,600% 		0.01 %
Value
Value For Money 		23.3 % Hugely better value.
+137% 		9.84 %
User Rating
UBM User Rating 		54 % 55 % +2%
Price
Price (score) 		$25 Hugely cheaper.
+81% 		$134
Nice To Haves 
+38%
Age
Newest 		94 Months More recent.
+20% 		118 Months
DQ Read
Peak 4K-64Thread Read Speed 		288 MB/s 378 MB/s Much faster peak deep queue read.
+31%
DQ Write
Peak 4K-64Thread Write Speed 		349 MB/s 364 MB/s +4%
AS-SSD Total
AS-SSD Total Score 		1,076 Pts 1,234 Pts Stronger server IO.
+15%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		204 MB/s 258 MB/s Faster peak deep queue mixed IO.
+26%
ADQ Read
Avg. 4K-64Thread Read Speed 		191 MB/s 323 MB/s Much faster deep queue read.
+69%
ADQ Write
Avg. 4K-64Thread Write Speed 		214 MB/s 297 MB/s Much faster deep queue write.
+39%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		92.7 MB/s 222 MB/s Hugely faster deep queue mixed IO.
+139%
Specifications 
Capacity
Capacity 		240GB 250GB
Conclusion 
Average Bench 65.8%
Average Bench 94.8%

could have used some DRAM, stutters when booting. [Dec '19 ExecutableFiles]

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

User Builds 
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26,364
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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

Welcome to our 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]

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 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 value for money upgrades.

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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
  • - SkillBench (space shooter) tests user input accuracy
  • - 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

 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $130
Intel Core i5-12600K $160Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $330
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