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SamsungMZ-75E120B
AdataASP900S3-128GM-C
▲ 584,587 ▼

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

VS
▲ 511,619 ▼

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

Effective Speed 
+40%
Real World Speed
Performance profile from 72,044 user samples
Benchmark your SSD here
69,224 User Benchmarks
Best Bench: 115% 111GB free
Worst Bench: 64% 111GB free
Poor: 64% Great: 115%
SPEED RANK: 281st / 1080
2,820 User Benchmarks
Best Bench: 80% 50GB free
Worst Bench: 57% 13GB free (System drive)
Poor: 57% Great: 80%
SPEED RANK: 697th / 1080
Effective Speed
Effective SSD Speed 		96 % Much faster effective speed.
+40% 		68.6 %
Average Score 
+64%
Read
Avg. Sequential Read Speed 		459 MB/s Faster read speed.
+21% 		380 MB/s
Write
Avg. Sequential Write Speed 		431 MB/s Hugely faster write speed.
+195% 		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 		91.2 MB/s Faster random write.
+12% 		81.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		358 MB/s Hugely faster mixed IO speed.
+88% 		190 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		50.2 MB/s Much faster random mixed IO.
+49% 		33.6 MB/s
SusWrite
Avg. Sustained Write Speed 		168 MB/s Much faster sustained write speed.
+39% 		121 MB/s
Peak Score 
+63%
Read
Peak Sequential Read Speed 		508 MB/s Faster peak read speed.
+19% 		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 		47.3 MB/s Much faster peak random read.
+48% 		32 MB/s
4K Write
Peak 4K Random Write Speed 		127 MB/s Slightly faster peak random write.
+9% 		116 MB/s
Mixed
Peak Sequential Mixed IO Speed 		416 MB/s Hugely faster peak mixed IO speed.
+93% 		216 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		62.6 MB/s Much faster peak random mixed IO.
+52% 		41.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		190 MB/s Faster peak sustained write speed.
+28% 		148 MB/s
Value & Sentiment 
+9%
Market Share
Based on 77,577,302 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % Hugely higher market share.
+100% 		0.01 %
Value
Value For Money 		8.46 % 10.7 % Better value.
+26%
User Rating
UBM User Rating 		58 % More popular.
+14% 		51 %
Price
Price (score) 		$80 $40 Much cheaper.
+50%
Nice To Haves 
+98%
Age
Newest 		119 Months More recent.
+22% 		152 Months
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s Hugely faster peak deep queue read.
+94% 		199 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s Hugely faster peak deep queue write.
+117% 		166 MB/s
AS-SSD Total
AS-SSD Total Score 		1,286 Pts Hugely stronger server IO.
+80% 		712 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		364 MB/s Hugely faster peak deep queue mixed IO.
+113% 		171 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		338 MB/s Hugely faster deep queue read.
+111% 		160 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		294 MB/s Hugely faster deep queue write.
+106% 		143 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		302 MB/s Hugely faster deep queue mixed IO.
+142% 		125 MB/s
Specifications 
Capacity
Capacity 		120GB 128GB
Conclusion 
Average Bench 96%
Average Bench 68.6%

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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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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 Frequently Asked Questions

Storage Devices FAQ
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What’s the difference between SATA, PCIe and NVMe?
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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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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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