AdataASP550SS3-240GM-C
SanDiskSDSSDXPS-240G

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 34,741 user samples
25,134 User Benchmarks
Best Bench: 93% 63GB free (System drive)
Worst Bench: 58% 223GB free
Poor: 58% Great: 93%
SPEED RANK: 479th / 1058
9,607 User Benchmarks
Best Bench: 113% 77GB free
Worst Bench: 67% 29GB free
Poor: 67% Great: 113%
SPEED RANK: 289th / 1058
Effective Speed
Effective SSD Speed
79.7 % 92.4 % Faster effective speed.
+16%
Read
Avg. Sequential Read Speed
468 MB/s +2% 461 MB/s
Write
Avg. Sequential Write Speed
353 MB/s 410 MB/s Faster write speed.
+16%
4K Read
Avg. 4K Random Read Speed
29.2 MB/s +1% 28.9 MB/s
4K Write
Avg. 4K Random Write Speed
80.3 MB/s Slightly faster random write.
+7%
75.2 MB/s
Mixed
Avg. Sequential Mixed IO Speed
348 MB/s Much faster mixed IO speed.
+34%
260 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
40.4 MB/s Faster random mixed IO.
+20%
33.8 MB/s
SusWrite
Avg. Sustained Write Speed
91 MB/s 362 MB/s Hugely faster sustained write speed.
+298%
Read
Peak Sequential Read Speed
508 MB/s 509 MB/s +0%
Write
Peak Sequential Write Speed
455 MB/s 478 MB/s Slightly faster peak write speed.
+5%
4K Read
Peak 4K Random Read Speed
34.7 MB/s 35.5 MB/s +2%
4K Write
Peak 4K Random Write Speed
111 MB/s 111 MB/s
Mixed
Peak Sequential Mixed IO Speed
406 MB/s Faster peak mixed IO speed.
+30%
313 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
50 MB/s Faster peak random mixed IO.
+19%
42.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
117 MB/s 477 MB/s Hugely faster peak sustained write speed.
+308%
Market Share
Based on 45,413,166 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.05 % Hugely higher market share.
+400%
0.01 %
Value
Value For Money
12.5 % 13.8 % Better value.
+10%
User Rating
UBM User Rating
53 % 54 % +2%
Price
Price (score)
$74 Slightly cheaper.
+6%
$79
Age
Newest
70 Months More recent.
+18%
85 Months
DQ Read
Peak 4K-64Thread Read Speed
337 MB/s 379 MB/s Faster peak deep queue read.
+12%
DQ Write
Peak 4K-64Thread Write Speed
342 MB/s +1% 340 MB/s
AS-SSD Total
AS-SSD Total Score
1,147 Pts 1,213 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
254 MB/s Much faster peak deep queue mixed IO.
+54%
165 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
288 MB/s 316 MB/s Slightly faster deep queue read.
+10%
ADQ Write
Avg. 4K-64Thread Write Speed
267 MB/s +1% 264 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
211 MB/s Much faster deep queue mixed IO.
+43%
148 MB/s
Capacity
Capacity
240GB 240GB
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The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) July 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 i5-11400F $260Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $185
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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