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KingstonSV300S37A/480G
SamsungMZ-7KE256BW
▲ 52994 ▼

Controller: LSI SandForce SF2281. Flash Memory: Toshiba 19nm Toggle Mode MLC. Release date: Q4 2012.

VS
▲ 5441,223 ▼

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND. Release date: Q3 2014.

Effective Speed 
+95%
Real World Speed
Performance profile from 157,439 user samples
Benchmark your SSD here
15,510 User Benchmarks
Best Bench: 65% 246GB free (System drive)
Worst Bench: 36% 444GB free
Poor: 36% Great: 65%
SPEED RANK: 887th / 1080
141,929 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 71% 71GB free (System drive)
Poor: 71% Great: 124%
SPEED RANK: 256th / 1080
Effective Speed
Effective SSD Speed 		52.2 % 102 % Hugely faster effective speed.
+95%
Average Score 
+110%
Read
Avg. Sequential Read Speed 		327 MB/s 469 MB/s Much faster read speed.
+43%
Write
Avg. Sequential Write Speed 		242 MB/s 396 MB/s Much faster write speed.
+64%
4K Read
Avg. 4K Random Read Speed 		23.5 MB/s 33.9 MB/s Much faster random read.
+44%
4K Write
Avg. 4K Random Write Speed 		18.3 MB/s 89.6 MB/s Hugely faster random write.
+390%
Mixed
Avg. Sequential Mixed IO Speed 		258 MB/s 334 MB/s Faster mixed IO speed.
+29%
4K Mixed
Avg. 4K Random Mixed IO Speed 		20.8 MB/s 44.1 MB/s Hugely faster random mixed IO.
+112%
SusWrite
Avg. Sustained Write Speed 		184 MB/s 346 MB/s Hugely faster sustained write speed.
+88%
Peak Score 
+109%
Read
Peak Sequential Read Speed 		460 MB/s 515 MB/s Faster peak read speed.
+12%
Write
Peak Sequential Write Speed 		325 MB/s 488 MB/s Much faster peak write speed.
+50%
4K Read
Peak 4K Random Read Speed 		30.7 MB/s 43.6 MB/s Much faster peak random read.
+42%
4K Write
Peak 4K Random Write Speed 		23.2 MB/s 125 MB/s Hugely faster peak random write.
+439%
Mixed
Peak Sequential Mixed IO Speed 		336 MB/s 383 MB/s Faster peak mixed IO speed.
+14%
4K Mixed
Peak 4K Random Mixed IO Speed 		26.6 MB/s 56.7 MB/s Hugely faster peak random mixed IO.
+113%
SusWrite
Peak Sequential Sustained Write 60s Average 		250 MB/s 484 MB/s Hugely faster peak sustained write speed.
+94%
Value & Sentiment 
+134%
Market Share
Based on 77,611,475 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % 0.09 % Hugely higher market share.
+350%
Value
Value For Money 		5.53 % 12.5 % Hugely better value.
+125%
User Rating
UBM User Rating 		52 % 54 % +4%
Price
Price (score) 		$250 $110 Much cheaper.
+56%
Nice To Haves 
+161%
Age
Newest 		144 Months 124 Months More recent.
+14%
DQ Read
Peak 4K-64Thread Read Speed 		222 MB/s 388 MB/s Much faster peak deep queue read.
+75%
DQ Write
Peak 4K-64Thread Write Speed 		91.1 MB/s 361 MB/s Hugely faster peak deep queue write.
+296%
AS-SSD Total
AS-SSD Total Score 		603 Pts 1,280 Pts Hugely stronger server IO.
+112%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		112 MB/s 356 MB/s Hugely faster peak deep queue mixed IO.
+218%
ADQ Read
Avg. 4K-64Thread Read Speed 		176 MB/s 344 MB/s Hugely faster deep queue read.
+95%
ADQ Write
Avg. 4K-64Thread Write Speed 		78.8 MB/s 282 MB/s Hugely faster deep queue write.
+258%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		93 MB/s 295 MB/s Hugely faster deep queue mixed IO.
+217%
Specifications 
Capacity
Capacity 		480GB 256GB
Conclusion 
Average Bench 52.2%
Average Bench 102%

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]

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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
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  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
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  • - 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 »

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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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The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark the gold standard for users?
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 $125
Intel Core i5-12600K $154Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $320
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