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SamsungMZ-77E1T0B
AdataASP900S3-256GM-C
▲ 58182 ▼

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

VS
▲ 505 ▼

Controller: LSI SandForce SF2281. NAND Flash: Intel Micron Synchronous 25nm MLC. Release date ≤ Q1 2014.

Effective Speed 
+52%
Real World Speed
Performance profile from 138,474 user samples
Benchmark your SSD here
129,044 User Benchmarks
Best Bench: 137% 931GB free
Worst Bench: 82% 306GB free
Poor: 82% Great: 137%
SPEED RANK: 214th / 1080
9,430 User Benchmarks
Best Bench: 89% 187GB free
Worst Bench: 53% 6GB free
Poor: 53% Great: 89%
SPEED RANK: 604th / 1080
Effective Speed
Effective SSD Speed 		112 % Much faster effective speed.
+52% 		74 %
Average Score 
+56%
Read
Avg. Sequential Read Speed 		472 MB/s Much faster read speed.
+34% 		353 MB/s
Write
Avg. Sequential Write Speed 		436 MB/s Much faster write speed.
+76% 		248 MB/s
4K Read
Avg. 4K Random Read Speed 		38.1 MB/s Much faster random read.
+40% 		27.2 MB/s
4K Write
Avg. 4K Random Write Speed 		87.8 MB/s Slightly faster random write.
+9% 		80.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		402 MB/s Much faster mixed IO speed.
+52% 		264 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		50.4 MB/s Much faster random mixed IO.
+44% 		34.9 MB/s
SusWrite
Avg. Sustained Write Speed 		423 MB/s Hugely faster sustained write speed.
+139% 		177 MB/s
Peak Score 
+51%
Read
Peak Sequential Read Speed 		516 MB/s Faster peak read speed.
+23% 		419 MB/s
Write
Peak Sequential Write Speed 		492 MB/s Much faster peak write speed.
+62% 		303 MB/s
4K Read
Peak 4K Random Read Speed 		48.9 MB/s Much faster peak random read.
+44% 		33.9 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s Faster peak random write.
+13% 		111 MB/s
Mixed
Peak Sequential Mixed IO Speed 		464 MB/s Much faster peak mixed IO speed.
+55% 		299 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		67.5 MB/s Much faster peak random mixed IO.
+53% 		44.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		486 MB/s Hugely faster peak sustained write speed.
+106% 		236 MB/s
Value & Sentiment 
+2,225%
Market Share
Based on 77,580,371 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.81 % Insanely higher market share.
+8,000% 		0.01 %
Value
Value For Money 		39.3 % Hugely better value.
+820% 		4.27 %
User Rating
UBM User Rating 		58 % More popular.
+16% 		50 %
Price
Price (score) 		$106 Much cheaper.
+65% 		$300
Nice To Haves 
+51%
Age
Newest 		45+ Months Much more recent.
+65% 		129+ Months
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s Much faster peak deep queue read.
+34% 		290 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		363 MB/s Much faster peak deep queue write.
+38% 		264 MB/s
AS-SSD Total
AS-SSD Total Score 		1,293 Pts Much stronger server IO.
+34% 		965 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		373 MB/s Much faster peak deep queue mixed IO.
+51% 		247 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		355 MB/s Much faster deep queue read.
+67% 		213 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		312 MB/s Much faster deep queue write.
+44% 		216 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		314 MB/s Much faster deep queue mixed IO.
+78% 		176 MB/s
Specifications 
Capacity
Capacity 		1TB 256GB
Conclusion 
Average Bench 112%
Average Bench 74%

Great SSD [Mar '21 Emerald_Wolf]

MORE DETAILS

User Builds 
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9,430
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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 user rated - User sentiment trumps benchmarks for this comparison.
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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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 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 »

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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 Best
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Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $389
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