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AdataASU800SS-512GT-C
AdataASP550SS3-960GM-C
▲ 53184 ▼

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D TLC NAND. Release date: Q3 2016.

VS
▲ 5166 ▼

Controller: Silicon Motion SM2256. Flash Memory: SK Hynix 16nm TLC. Release date: Q3 2015.

Effective Speed 
+27%
Real World Speed
Performance profile from 32,302 user samples
Benchmark your SSD here
31,280 User Benchmarks
Best Bench: 127% 407GB free (System drive)
Worst Bench: 71% 309GB free (System drive)
Poor: 71% Great: 127%
SPEED RANK: 240th / 1072
1,022 User Benchmarks
Best Bench: 95% 893GB free
Worst Bench: 59% 480GB free (System drive)
Poor: 59% Great: 95%
SPEED RANK: 465th / 1072
Effective Speed
Effective SSD Speed 		104 % Faster effective speed.
+27% 		81.6 %
Average Score 
+26%
Read
Avg. Sequential Read Speed 		476 MB/s Faster read speed.
+14% 		416 MB/s
Write
Avg. Sequential Write Speed 		415 MB/s Slightly faster write speed.
+8% 		386 MB/s
4K Read
Avg. 4K Random Read Speed 		33.3 MB/s Much faster random read.
+36% 		24.4 MB/s
4K Write
Avg. 4K Random Write Speed 		86.6 MB/s Slightly faster random write.
+5% 		82.2 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		385 MB/s Faster mixed IO speed.
+27% 		304 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		46.9 MB/s Faster random mixed IO.
+29% 		36.4 MB/s
SusWrite
Avg. Sustained Write Speed 		361 MB/s Much faster sustained write speed.
+64% 		220 MB/s
Peak Score 
+35%
Read
Peak Sequential Read Speed 		518 MB/s Faster peak read speed.
+14% 		454 MB/s
Write
Peak Sequential Write Speed 		477 MB/s +5% 456 MB/s
4K Read
Peak 4K Random Read Speed 		43.8 MB/s Much faster peak random read.
+52% 		28.9 MB/s
4K Write
Peak 4K Random Write Speed 		119 MB/s +2% 117 MB/s
Mixed
Peak Sequential Mixed IO Speed 		449 MB/s Much faster peak mixed IO speed.
+32% 		339 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		61 MB/s Much faster peak random mixed IO.
+36% 		44.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		470 MB/s Hugely faster peak sustained write speed.
+103% 		231 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 75,810,443 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.05 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		38.7 % Much better value.
+43% 		27.1 %
User Rating
UBM User Rating 		53 % +4% 51 %
Price
Price (score) 		$50 Much cheaper.
+54% 		$109
Nice To Haves 
+12%
Age
Newest 		92 Months More recent.
+12% 		104 Months
DQ Read
Peak 4K-64Thread Read Speed 		391 MB/s Faster peak deep queue read.
+21% 		324 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		364 MB/s Faster peak deep queue write.
+10% 		330 MB/s
AS-SSD Total
AS-SSD Total Score 		1,280 Pts Stronger server IO.
+16% 		1,105 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		297 MB/s Faster peak deep queue mixed IO.
+24% 		239 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		333 MB/s Faster deep queue read.
+21% 		275 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		298 MB/s Slightly faster deep queue write.
+9% 		274 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		182 MB/s 206 MB/s Faster deep queue mixed IO.
+13%
Specifications 
Capacity
Capacity 		512GB 960GB
User Builds 
31,280
1,022
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

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Solid State Drive Rankings (Price vs Performance) May 2024 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 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.

UserBenchmark of the month

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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
The Best.
CPUGPUSSD
Intel Core i5-13600K $254Nvidia RTX 4060 $300Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $163Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $37SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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