AdataASU800SS-256GT-C
SamsungMZ-77E250B

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

Controller: Samsung MKX. Memory: Samsung 128 layer TLC V-NAND. Release date: Q1 2021.

Real World Speed
Performance profile from 38,358 user samples
34,417 User Benchmarks
Best Bench: 118% 231GB free
Worst Bench: 58% 162GB free (System drive)
Poor: 58% Great: 118%
SPEED RANK: 298th / 1058
3,941 User Benchmarks
Best Bench: 130% 233GB free
Worst Bench: 77% 165GB free (System drive)
Poor: 77% Great: 130%
SPEED RANK: 223rd / 1058
Effective Speed
Effective SSD Speed
91.6 % 105 % Faster effective speed.
+15%
Read
Avg. Sequential Read Speed
473 MB/s +0% 471 MB/s
Write
Avg. Sequential Write Speed
373 MB/s 408 MB/s Slightly faster write speed.
+9%
4K Read
Avg. 4K Random Read Speed
30.1 MB/s 38.7 MB/s Faster random read.
+29%
4K Write
Avg. 4K Random Write Speed
81.2 MB/s 87 MB/s Slightly faster random write.
+7%
Mixed
Avg. Sequential Mixed IO Speed
357 MB/s 379 MB/s Slightly faster mixed IO speed.
+6%
4K Mixed
Avg. 4K Random Mixed IO Speed
41.9 MB/s 49.3 MB/s Faster random mixed IO.
+18%
SusWrite
Avg. Sustained Write Speed
270 MB/s 333 MB/s Faster sustained write speed.
+23%
Read
Peak Sequential Read Speed
516 MB/s 517 MB/s +0%
Write
Peak Sequential Write Speed
472 MB/s 492 MB/s +4%
4K Read
Peak 4K Random Read Speed
39.7 MB/s 50.4 MB/s Faster peak random read.
+27%
4K Write
Peak 4K Random Write Speed
115 MB/s 122 MB/s Slightly faster peak random write.
+6%
Mixed
Peak Sequential Mixed IO Speed
450 MB/s 458 MB/s +2%
4K Mixed
Peak 4K Random Mixed IO Speed
55.9 MB/s 67.9 MB/s Faster peak random mixed IO.
+21%
SusWrite
Peak Sequential Sustained Write 60s Average
462 MB/s Faster peak sustained write speed.
+17%
395 MB/s
Market Share
Based on 47,219,820 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.11 % 0.12 % Slightly higher market share.
+9%
Value
Value For Money
26.5 % Much better value.
+36%
19.5 %
User Rating
UBM User Rating
54 % 56 % +4%
Price
Price (score)
$35 Much cheaper.
+44%
$62
Age
Newest
60 Months 8 Months Hugely more recent.
+87%
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s 389 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed
360 MB/s 361 MB/s +0%
AS-SSD Total
AS-SSD Total Score
1,256 Pts 1,293 Pts +3%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
282 MB/s 372 MB/s Much faster peak deep queue mixed IO.
+32%
ADQ Read
Avg. 4K-64Thread Read Speed
267 MB/s 341 MB/s Faster deep queue read.
+28%
ADQ Write
Avg. 4K-64Thread Write Speed
271 MB/s 296 MB/s Slightly faster deep queue write.
+9%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
189 MB/s 282 MB/s Much faster deep queue mixed IO.
+49%
Capacity
Capacity
256GB 250GB
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light speed ssd [Feb '21 tester4678]

MORE DETAILS

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 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $72G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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