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AdataASP900S3-128GM-C
SamsungMZ-76P256BW
▲ 511,619 ▼

Controller: LSI SandForce SF2281. NAND Flash: Intel Micron Synchronous 25nm MLC. Release date: Q1 2012.

VS
▲ 52216 ▼

Controller: Samsung MJX. Memory: Samsung 64 layer MLC V-NAND. Release date: Q1 2018.

Effective Speed 
+59%
Real World Speed
Performance profile from 15,385 user samples
Benchmark your SSD here
2,820 User Benchmarks
Best Bench: 80% 50GB free
Worst Bench: 57% 13GB free (System drive)
Poor: 57% Great: 80%
SPEED RANK: 697th / 1080
12,565 User Benchmarks
Best Bench: 131% 228GB free
Worst Bench: 78% 69GB free (System drive)
Poor: 78% Great: 131%
SPEED RANK: 228th / 1080
Effective Speed
Effective SSD Speed 		68.6 % 109 % Much faster effective speed.
+59%
Average Score 
+91%
Read
Avg. Sequential Read Speed 		380 MB/s 474 MB/s Faster read speed.
+25%
Write
Avg. Sequential Write Speed 		146 MB/s 419 MB/s Hugely faster write speed.
+187%
4K Read
Avg. 4K Random Read Speed 		27.5 MB/s 37.7 MB/s Much faster random read.
+37%
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s 93.3 MB/s Faster random write.
+14%
Mixed
Avg. Sequential Mixed IO Speed 		190 MB/s 398 MB/s Hugely faster mixed IO speed.
+109%
4K Mixed
Avg. 4K Random Mixed IO Speed 		33.6 MB/s 48.3 MB/s Much faster random mixed IO.
+44%
SusWrite
Avg. Sustained Write Speed 		121 MB/s 388 MB/s Hugely faster sustained write speed.
+221%
Peak Score 
+93%
Read
Peak Sequential Read Speed 		428 MB/s 515 MB/s Faster peak read speed.
+20%
Write
Peak Sequential Write Speed 		168 MB/s 488 MB/s Hugely faster peak write speed.
+190%
4K Read
Peak 4K Random Read Speed 		32 MB/s 45.9 MB/s Much faster peak random read.
+43%
4K Write
Peak 4K Random Write Speed 		116 MB/s 128 MB/s Faster peak random write.
+10%
Mixed
Peak Sequential Mixed IO Speed 		216 MB/s 448 MB/s Hugely faster peak mixed IO speed.
+107%
4K Mixed
Peak 4K Random Mixed IO Speed 		41.1 MB/s 61 MB/s Much faster peak random mixed IO.
+48%
SusWrite
Peak Sequential Sustained Write 60s Average 		148 MB/s 487 MB/s Hugely faster peak sustained write speed.
+229%
Value & Sentiment 
+23%
Market Share
Based on 77,579,545 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.02 % Hugely higher market share.
+100%
Value
Value For Money 		10.7 % 15.5 % Much better value.
+46%
User Rating
UBM User Rating 		51 % 52 % +2%
Price
Price (score) 		$40 Much cheaper.
+56% 		$90
Nice To Haves 
+103%
Age
Newest 		152 Months 81 Months Much more recent.
+47%
DQ Read
Peak 4K-64Thread Read Speed 		199 MB/s 389 MB/s Hugely faster peak deep queue read.
+95%
DQ Write
Peak 4K-64Thread Write Speed 		166 MB/s 361 MB/s Hugely faster peak deep queue write.
+117%
AS-SSD Total
AS-SSD Total Score 		712 Pts 1,289 Pts Hugely stronger server IO.
+81%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		171 MB/s 367 MB/s Hugely faster peak deep queue mixed IO.
+115%
ADQ Read
Avg. 4K-64Thread Read Speed 		160 MB/s 343 MB/s Hugely faster deep queue read.
+114%
ADQ Write
Avg. 4K-64Thread Write Speed 		143 MB/s 296 MB/s Hugely faster deep queue write.
+107%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		125 MB/s 309 MB/s Hugely faster deep queue mixed IO.
+147%
Specifications 
Capacity
Capacity 		128GB 256GB
Conclusion 
Average Bench 68.6%
Average Bench 109%

The 128GB Adata Premier Pro SP900 has peak and average sequential read/write speeds of 496/166 and 175/106 MB/s. The average speeds are significantly worse than peak which indicates that the SP900 has an unstable performance profile. Additionally, the peak write speed of 166 MB/s is 90% below the group leaders. In terms of small file 4K read/write speeds things are a little better where the SP900 achieved peak and average scores of 23/83 and 17/29 MB/s. These 4K figures still lag the group leaders by around 40%. The Overall effective speed for the SP900 measures 340 MB/s, the worst I have seen to date on a 128GB SSD. The SP900 is not particularly well priced, and therefore represents poor value for money. There are both faster and cheaper 128GB alternatives available amongst the group leaders. [Feb '14 SSDrivePro]

MORE DETAILS

The 860 Pro is Samsung’s latest consumer-grade SATA SSD flagship, superseding the popular, but now three years old, 850 Pro. Like the 850 Pro, the 860 Pro is based on Samsung’s proprietary and revolutionary (at the time), MLC V-NAND (3D). A 10% price premium over the 256 GB 850 Pro will purchase the 256 GB 860 Pro which has an impressive 16% faster effective speed. This is achieved via an updated controller (MJX) and 64 layers of V-NAND (versus 32 layers per the 850 Pro). The 860 Pro has sequential speeds of up to 540 MB/s which almost completely saturate its SATA 3.0 interface. These peak levels of performance are slightly higher, but still comparable to the peak performance of the 860 Evo before its SLC write cache (12 GB on the 250 GB Evo) is saturated, making the 860 Evo (at around 30% cheaper) a more economical choice for users who rarely write more than 12 GB at a time. There are also reliability improvements compared to the 850 generation with Samsung now offering a warranty of 300 TBW (terabytes written) for the 256 GB 860 Pro, compared to 150 TBW for the 256 GB 850 Pro. Thanks to higher density NAND, the 860 Pro is also available in a 4 TB variant, whereas previously 2 TB was the largest capacity for a Samsung SATA MLC SSD.  [Feb '18 SSDrivePro]

MORE DETAILS

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12,565
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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

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]

Group Test Results

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 Frequently Asked Questions

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Solid State Drives
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The Best
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