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KingstonSA400S37/240G
SamsungMZ-7PD256BW
▲ 54667 ▼

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

VS
▲ 5420,557 ▼

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

Effective Speed 
+44%
Real World Speed
Performance profile from 497,407 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
73,119 User Benchmarks
Best Bench: 116% 238GB free
Worst Bench: 68% 11GB free (System drive)
Poor: 68% Great: 116%
SPEED RANK: 287th / 1080
Effective Speed
Effective SSD Speed 		65.8 % 95 % Much faster effective speed.
+44%
Average Score 
+37%
Read
Avg. Sequential Read Speed 		414 MB/s 459 MB/s Faster read speed.
+11%
Write
Avg. Sequential Write Speed 		318 MB/s 367 MB/s Faster write speed.
+15%
4K Read
Avg. 4K Random Read Speed 		26.7 MB/s 31 MB/s Faster random read.
+16%
4K Write
Avg. 4K Random Write Speed 		56.9 MB/s 85.6 MB/s Much faster random write.
+50%
Mixed
Avg. Sequential Mixed IO Speed 		260 MB/s 303 MB/s Faster mixed IO speed.
+17%
4K Mixed
Avg. 4K Random Mixed IO Speed 		22.4 MB/s 39.5 MB/s Much faster random mixed IO.
+76%
SusWrite
Avg. Sustained Write Speed 		179 MB/s 312 MB/s Much faster sustained write speed.
+74%
Peak Score 
+4%
Read
Peak Sequential Read Speed 		504 MB/s 510 MB/s +1%
Write
Peak Sequential Write Speed 		446 MB/s 480 MB/s Slightly faster peak write speed.
+8%
4K Read
Peak 4K Random Read Speed 		36.1 MB/s 36.1 MB/s
4K Write
Peak 4K Random Write Speed 		106 MB/s 114 MB/s Slightly faster peak random write.
+8%
Mixed
Peak Sequential Mixed IO Speed 		420 MB/s Faster peak mixed IO speed.
+14% 		368 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		42 MB/s 47.6 MB/s Faster peak random mixed IO.
+13%
SusWrite
Peak Sequential Sustained Write 60s Average 		432 MB/s 477 MB/s Faster peak sustained write speed.
+10%
Value & Sentiment 
+527%
Market Share
Based on 77,603,115 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.97 % Insanely higher market share.
+1,840% 		0.05 %
Value
Value For Money 		23.3 % Hugely better value.
+184% 		8.21 %
User Rating
UBM User Rating 		54 % 54 %
Price
Price (score) 		$25 Hugely cheaper.
+86% 		$175
Nice To Haves 
+19%
Age
Newest 		94 Months Much more recent.
+35% 		145 Months
DQ Read
Peak 4K-64Thread Read Speed 		288 MB/s 385 MB/s Much faster peak deep queue read.
+34%
DQ Write
Peak 4K-64Thread Write Speed 		349 MB/s +4% 334 MB/s
AS-SSD Total
AS-SSD Total Score 		1,076 Pts 1,221 Pts Stronger server IO.
+13%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		204 MB/s Faster peak deep queue mixed IO.
+16% 		176 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		191 MB/s 346 MB/s Hugely faster deep queue read.
+81%
ADQ Write
Avg. 4K-64Thread Write Speed 		214 MB/s 262 MB/s Faster deep queue write.
+22%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		92.7 MB/s 147 MB/s Much faster deep queue mixed IO.
+59%
Specifications 
Capacity
Capacity 		240GB 256GB
Conclusion 
Average Bench 65.8%
Average Bench 95%

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

MORE DETAILS

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]

MORE DETAILS

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73,119
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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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  • - CPU tests include: integer, floating and string
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  • - Reports are generated and presented on userbenchmark.com
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 Frequently Asked Questions

Storage Devices FAQ
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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?
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What is sequential write speed?
What is sequential read speed?
What is incompressible data?
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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?
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ALL FAQs »

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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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The Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $125
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