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AdataASU800SS-128GT-C
AdataASP550SS3-240GM-C
▲ 53198 ▼

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

VS
▲ 53726 ▼

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

Effective Speed 
+2%
Real World Speed
Performance profile from 61,462 user samples
Benchmark your SSD here
32,167 User Benchmarks
Best Bench: 107% 96GB free
Worst Bench: 49% 30GB free
Poor: 49% Great: 107%
SPEED RANK: 539th / 1080
29,295 User Benchmarks
Best Bench: 92% 49GB free (System drive)
Worst Bench: 56% 168GB free (System drive)
Poor: 56% Great: 92%
SPEED RANK: 519th / 1080
Effective Speed
Effective SSD Speed 		77.2 % 78.5 % +2%
Average Score 
+4%
Read
Avg. Sequential Read Speed 		465 MB/s +2% 458 MB/s
Write
Avg. Sequential Write Speed 		279 MB/s 356 MB/s Faster write speed.
+28%
4K Read
Avg. 4K Random Read Speed 		28.5 MB/s 28.7 MB/s +1%
4K Write
Avg. 4K Random Write Speed 		80.1 MB/s +1% 79 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		288 MB/s 344 MB/s Faster mixed IO speed.
+19%
4K Mixed
Avg. 4K Random Mixed IO Speed 		37.3 MB/s 39.7 MB/s Slightly faster random mixed IO.
+6%
SusWrite
Avg. Sustained Write Speed 		164 MB/s Much faster sustained write speed.
+80% 		91.3 MB/s
Peak Score 
+37%
Read
Peak Sequential Read Speed 		510 MB/s +1% 506 MB/s
Write
Peak Sequential Write Speed 		442 MB/s 454 MB/s +3%
4K Read
Peak 4K Random Read Speed 		37.7 MB/s Faster peak random read.
+11% 		33.9 MB/s
4K Write
Peak 4K Random Write Speed 		118 MB/s Slightly faster peak random write.
+7% 		110 MB/s
Mixed
Peak Sequential Mixed IO Speed 		428 MB/s Slightly faster peak mixed IO speed.
+6% 		404 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		51 MB/s +4% 49.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		399 MB/s Hugely faster peak sustained write speed.
+235% 		119 MB/s
Value & Sentiment 
+20%
Market Share
Based on 76,253,750 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % 0.02 %
Value
Value For Money 		14.9 % Better value.
+21% 		12.3 %
User Rating
UBM User Rating 		53 % 53 %
Price
Price (score) 		$30 Much cheaper.
+59% 		$74
Nice To Haves 
+32%
Age
Newest 		93 Months More recent.
+11% 		105 Months
DQ Read
Peak 4K-64Thread Read Speed 		259 MB/s 340 MB/s Much faster peak deep queue read.
+31%
DQ Write
Peak 4K-64Thread Write Speed 		348 MB/s +3% 339 MB/s
AS-SSD Total
AS-SSD Total Score 		1,047 Pts 1,146 Pts Slightly stronger server IO.
+9%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		235 MB/s 253 MB/s Slightly faster peak deep queue mixed IO.
+8%
ADQ Read
Avg. 4K-64Thread Read Speed 		146 MB/s 287 MB/s Hugely faster deep queue read.
+97%
ADQ Write
Avg. 4K-64Thread Write Speed 		185 MB/s 270 MB/s Much faster deep queue write.
+46%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		118 MB/s 210 MB/s Much faster deep queue mixed IO.
+78%
Specifications 
Capacity
Capacity 		128GB 240GB
User Builds 
32,167
29,295
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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]

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  • 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.
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 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?
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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?
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