UserBenchmark: Adata Premier Pro SP900 vs Samsung 840 Evo

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SamsungMZ-7TE120BW

BUY • $85

AdataASP900S3-128GM-C

BUY • $40

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Real World Speed

Performance profile from 107,264 user samples

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104,444 User Benchmarks

Best Bench: 108% 112GB free
Worst Bench: 63% 42GB free

Poor: 63% Great: 108%

SPEED RANK: 312^th / 1072

2,820 User Benchmarks

Best Bench: 80% 50GB free
Worst Bench: 57% 13GB free (System drive)

Poor: 57% Great: 80%

SPEED RANK: 689^th / 1072


Effective Speed Effective SSD Speed		91.4 %	Much faster effective speed. +33%		68.6 %


Read Avg. Sequential Read Speed	461 MB/s	Faster read speed. +21%	380 MB/s
Write Avg. Sequential Write Speed	404 MB/s	Hugely faster write speed. +177%	146 MB/s
4K Read Avg. 4K Random Read Speed	38.9 MB/s	Much faster random read. +41%	27.5 MB/s
4K Write Avg. 4K Random Write Speed	87 MB/s	Slightly faster random write. +7%	81.6 MB/s
Mixed Avg. Sequential Mixed IO Speed	317 MB/s	Much faster mixed IO speed. +67%	190 MB/s
4K Mixed Avg. 4K Random Mixed IO Speed	45.8 MB/s	Much faster random mixed IO. +36%	33.6 MB/s
SusWrite Avg. Sustained Write Speed	136 MB/s	Faster sustained write speed. +12%	121 MB/s


Read Peak Sequential Read Speed	506 MB/s	Faster peak read speed. +18%	428 MB/s
Write Peak Sequential Write Speed	489 MB/s	Hugely faster peak write speed. +191%	168 MB/s
4K Read Peak 4K Random Read Speed	46.3 MB/s	Much faster peak random read. +45%	32 MB/s
4K Write Peak 4K Random Write Speed	118 MB/s	+2%	116 MB/s
Mixed Peak Sequential Mixed IO Speed	392 MB/s	Hugely faster peak mixed IO speed. +81%	216 MB/s
4K Mixed Peak 4K Random Mixed IO Speed	55.6 MB/s	Much faster peak random mixed IO. +35%	41.1 MB/s
SusWrite Peak Sequential Sustained Write 60s Average	179 MB/s	Faster peak sustained write speed. +21%	148 MB/s

Market Share

Based on 75,663,930 SSDs tested

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Market Share Market Share (trailing 30 days)	0.05 %	Hugely higher market share. +400%	0.01 %
Value Value For Money	7.7 %		10.7 %	Much better value. +39%
User Rating UBM User Rating	54 %	Slightly more popular. +6%	51 %
Price Price (score)	$85		$40	Much cheaper. +53%


Age Newest	129 Months	More recent. +11%	145 Months
DQ Read Peak 4K-64Thread Read Speed	381 MB/s	Hugely faster peak deep queue read. +91%	199 MB/s
DQ Write Peak 4K-64Thread Write Speed	362 MB/s	Hugely faster peak deep queue write. +118%	166 MB/s
AS-SSD Total AS-SSD Total Score	1,268 Pts	Much stronger server IO. +78%	712 Pts
DQ Mixed Peak 4K-64Thread Mixed IO Speed	179 MB/s	+5%	171 MB/s
ADQ Read Avg. 4K-64Thread Read Speed	339 MB/s	Hugely faster deep queue read. +112%	160 MB/s
ADQ Write Avg. 4K-64Thread Write Speed	297 MB/s	Hugely faster deep queue write. +108%	143 MB/s
ADQ Mixed Avg. 4K-64Thread Mixed IO Speed	160 MB/s	Faster deep queue mixed IO. +28%	125 MB/s


Capacity Capacity			120GB			128GB

The 120GB Evo, like its 250GB sibling, features a second level Turbowrite cache (TWC). This 3GB block of high speed SLC memory allows the Evo to write data at 370 MB/s, nearly double its normal rate. When the TWC is full write speeds drop by around 50% but since consumers generally write less than 3GB in a typical write operation, the performance drop will rarely be noticed. On the other hand, in a server environment this sort of performance degradation would be unacceptable. Comparing the 120GB and 250GB Evos shows that they have similar performance profiles. The performance equivalence between the different capacities, coupled with the fact that their prices are almost linear, implies that both capacities represent roughly the same value for money. Within its TWC, the 120GB Evo is capable of chart topping burst IO rates and it sits squarely amongst the best performing 120GB drives. ^{[Aug '14 SSDrivePro]}

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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]}

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Solid State Drive Rankings (Price vs Performance) April 2024 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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CPU	GPU	SSD
Intel Core i5-13600K $279	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $134	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182	Nvidia RTX 4070 $409	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

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