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SanDiskSDSSDXPS-480G-G25
AdataASU800SS-256GT-C
▲ 541,098 ▼

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2014.

VS
▲ 54510 ▼

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

Effective Speed 
+3%
Real World Speed
Performance profile from 49,975 user samples
Benchmark your SSD here
9,250 User Benchmarks
Best Bench: 114% 243GB free
Worst Bench: 62% 382GB free
Poor: 62% Great: 114%
SPEED RANK: 302nd / 1080
40,725 User Benchmarks
Best Bench: 118% 159GB free (System drive)
Worst Bench: 60% 123GB free (System drive)
Poor: 60% Great: 118%
SPEED RANK: 325th / 1080
Effective Speed
Effective SSD Speed 		93.2 % +3% 90.7 %
Average Score 
+2%
Read
Avg. Sequential Read Speed 		461 MB/s 469 MB/s +2%
Write
Avg. Sequential Write Speed 		415 MB/s Faster write speed.
+12% 		370 MB/s
4K Read
Avg. 4K Random Read Speed 		28.9 MB/s 29.8 MB/s +3%
4K Write
Avg. 4K Random Write Speed 		73.7 MB/s 81.1 MB/s Faster random write.
+10%
Mixed
Avg. Sequential Mixed IO Speed 		267 MB/s 356 MB/s Much faster mixed IO speed.
+33%
4K Mixed
Avg. 4K Random Mixed IO Speed 		33.6 MB/s 41.4 MB/s Faster random mixed IO.
+23%
SusWrite
Avg. Sustained Write Speed 		381 MB/s Much faster sustained write speed.
+45% 		262 MB/s
Peak Score 
+12%
Read
Peak Sequential Read Speed 		509 MB/s 516 MB/s +1%
Write
Peak Sequential Write Speed 		480 MB/s +2% 471 MB/s
4K Read
Peak 4K Random Read Speed 		35.5 MB/s 40 MB/s Faster peak random read.
+13%
4K Write
Peak 4K Random Write Speed 		114 MB/s 120 MB/s Slightly faster peak random write.
+5%
Mixed
Peak Sequential Mixed IO Speed 		313 MB/s 443 MB/s Much faster peak mixed IO speed.
+42%
4K Mixed
Peak 4K Random Mixed IO Speed 		42.8 MB/s 55.8 MB/s Much faster peak random mixed IO.
+30%
SusWrite
Peak Sequential Sustained Write 60s Average 		479 MB/s +3% 464 MB/s
Value & Sentiment 
+17%
Market Share
Based on 77,611,912 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.03 % Hugely higher market share.
+200%
Value
Value For Money 		30.9 % Hugely better value.
+107% 		14.9 %
User Rating
UBM User Rating 		54 % 54 %
Price
Price (score) 		$55 Cheaper.
+26% 		$74
Nice To Haves 
+14%
Age
Newest 		125 Months 98 Months More recent.
+22%
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s 381 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed 		341 MB/s 360 MB/s Slightly faster peak deep queue write.
+6%
AS-SSD Total
AS-SSD Total Score 		1,213 Pts 1,254 Pts +3%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		164 MB/s 279 MB/s Much faster peak deep queue mixed IO.
+70%
ADQ Read
Avg. 4K-64Thread Read Speed 		321 MB/s Faster deep queue read.
+18% 		273 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		262 MB/s 271 MB/s +3%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		148 MB/s 187 MB/s Faster deep queue mixed IO.
+26%
Specifications 
Capacity
Capacity 		480GB 256GB
User Builds 
9,250
40,725
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) 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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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 $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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