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AdataASU800SS-2TT-C
CrucialCT525MX300SSD1
▲ 505 ▼

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D TLC NAND. Release date ≈ Q3 2018.

VS
▲ 541,131 ▼

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC. Release date: Q2 2016.

Effective Speed 
+24%
Real World Speed
Performance profile from 107,638 user samples
Benchmark your SSD here
2,601 User Benchmarks
Best Bench: 127% 1.5TB free
Worst Bench: 78% 587GB free
Poor: 78% Great: 127%
SPEED RANK: 233rd / 1080
105,037 User Benchmarks
Best Bench: 99% 125GB free
Worst Bench: 65% 296GB free (System drive)
Poor: 65% Great: 99%
SPEED RANK: 401st / 1080
Effective Speed
Effective SSD Speed 		106 % Faster effective speed.
+24% 		85.8 %
Average Score 
+21%
Read
Avg. Sequential Read Speed 		479 MB/s Faster read speed.
+21% 		397 MB/s
Write
Avg. Sequential Write Speed 		426 MB/s Slightly faster write speed.
+5% 		404 MB/s
4K Read
Avg. 4K Random Read Speed 		32.9 MB/s Much faster random read.
+35% 		24.3 MB/s
4K Write
Avg. 4K Random Write Speed 		85.6 MB/s 86.5 MB/s +1%
Mixed
Avg. Sequential Mixed IO Speed 		379 MB/s Slightly faster mixed IO speed.
+10% 		345 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		46.1 MB/s Much faster random mixed IO.
+31% 		35.2 MB/s
SusWrite
Avg. Sustained Write Speed 		421 MB/s Much faster sustained write speed.
+45% 		290 MB/s
Peak Score 
+23%
Read
Peak Sequential Read Speed 		517 MB/s Faster peak read speed.
+19% 		436 MB/s
Write
Peak Sequential Write Speed 		482 MB/s 482 MB/s
4K Read
Peak 4K Random Read Speed 		41.5 MB/s Much faster peak random read.
+47% 		28.2 MB/s
4K Write
Peak 4K Random Write Speed 		120 MB/s +3% 117 MB/s
Mixed
Peak Sequential Mixed IO Speed 		428 MB/s Faster peak mixed IO speed.
+10% 		389 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		58.7 MB/s Much faster peak random mixed IO.
+39% 		42.3 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		479 MB/s Much faster peak sustained write speed.
+43% 		335 MB/s
Value & Sentiment 
+168%
Market Share
Based on 77,608,729 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.07 % Hugely higher market share.
+600%
Value
Value For Money 		16 % Better value.
+12% 		14.3 %
User Rating
UBM User Rating 		50 % 54 % Slightly more popular.
+8%
Price
Price (score) 		$668 $150 Much cheaper.
+78%
Nice To Haves 
+8%
Age
Newest 		74+ Months More recent.
+27% 		101 Months
DQ Read
Peak 4K-64Thread Read Speed 		393 MB/s Faster peak deep queue read.
+12% 		351 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		370 MB/s Faster peak deep queue write.
+13% 		327 MB/s
AS-SSD Total
AS-SSD Total Score 		1,286 Pts Stronger server IO.
+13% 		1,143 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		314 MB/s 330 MB/s Slightly faster peak deep queue mixed IO.
+5%
ADQ Read
Avg. 4K-64Thread Read Speed 		331 MB/s Slightly faster deep queue read.
+10% 		301 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		284 MB/s +4% 272 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		245 MB/s 274 MB/s Faster deep queue mixed IO.
+12%
Specifications 
Capacity
Capacity 		2TB 525GB
User Builds 
2,601
105,037
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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 »

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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 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
CPUGPUSSD
Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $125
Intel Core i5-12600K $155Nvidia 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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