AdataASP550SS3-240GM-C
SanDiskSDSSDXPS-480G-G25

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

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

Real World Speed
Performance profile from 37,962 user samples
28,768 User Benchmarks
Best Bench: 93% 67GB free
Worst Bench: 51% 94GB free
Poor: 51% Great: 93%
SPEED RANK: 508th / 1058
9,194 User Benchmarks
Best Bench: 114% 90GB free
Worst Bench: 68% 45GB free
Poor: 68% Great: 114%
SPEED RANK: 267th / 1058
Effective Speed
Effective SSD Speed
77.6 % 94.6 % Faster effective speed.
+22%
Read
Avg. Sequential Read Speed
459 MB/s 466 MB/s +2%
Write
Avg. Sequential Write Speed
352 MB/s 420 MB/s Faster write speed.
+19%
4K Read
Avg. 4K Random Read Speed
28.4 MB/s 28.9 MB/s +2%
4K Write
Avg. 4K Random Write Speed
77.5 MB/s +3% 75 MB/s
Mixed
Avg. Sequential Mixed IO Speed
346 MB/s Much faster mixed IO speed.
+30%
266 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
39.4 MB/s Faster random mixed IO.
+17%
33.7 MB/s
SusWrite
Avg. Sustained Write Speed
89.4 MB/s 392 MB/s Hugely faster sustained write speed.
+338%
Read
Peak Sequential Read Speed
509 MB/s 509 MB/s
Write
Peak Sequential Write Speed
455 MB/s 482 MB/s Slightly faster peak write speed.
+6%
4K Read
Peak 4K Random Read Speed
35.1 MB/s 35.4 MB/s +1%
4K Write
Peak 4K Random Write Speed
112 MB/s 114 MB/s +2%
Mixed
Peak Sequential Mixed IO Speed
406 MB/s Much faster peak mixed IO speed.
+32%
308 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
50.5 MB/s Faster peak random mixed IO.
+19%
42.5 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
117 MB/s 479 MB/s Hugely faster peak sustained write speed.
+309%
Market Share
Based on 47,099,759 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.05 % Hugely higher market share.
+400%
0.01 %
Value
Value For Money
12.2 % Better value.
+10%
11.1 %
User Rating
UBM User Rating
53 % 53 %
Price
Price (score)
$74 Much cheaper.
+66%
$219
Age
Newest
72 Months More recent.
+17%
87 Months
DQ Read
Peak 4K-64Thread Read Speed
337 MB/s 377 MB/s Faster peak deep queue read.
+12%
DQ Write
Peak 4K-64Thread Write Speed
342 MB/s +1% 339 MB/s
AS-SSD Total
AS-SSD Total Score
1,149 Pts 1,212 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
253 MB/s Much faster peak deep queue mixed IO.
+53%
165 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
278 MB/s 324 MB/s Faster deep queue read.
+17%
ADQ Write
Avg. 4K-64Thread Write Speed
267 MB/s 271 MB/s +1%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
210 MB/s Much faster deep queue mixed IO.
+41%
149 MB/s
Capacity
Capacity
240GB 480GB
Solid State Drive Rankings (Price vs Performance) September 2021 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 freeware 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 upgrades.

UserBenchmark of the month

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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 850 Evo 120GB $183
Intel Core i7-11700K $346Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $28Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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