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AdataASP900S3-128GM-C
KingstonSV300S37A/120G
▲ 511,619 ▼

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

VS
▲ 545,433 ▼

Controller: LSI SandForce SF2281. Flash Memory: Toshiba 19nm Toggle Mode MLC. Release date: Q4 2012.

Effective Speed 
+28%
Real World Speed
Performance profile from 341,840 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
339,020 User Benchmarks
Best Bench: 73% 15GB free
Worst Bench: 30% 77GB free (System drive)
Poor: 30% Great: 73%
SPEED RANK: 875th / 1080
Effective Speed
Effective SSD Speed 		68.6 % Faster effective speed.
+28% 		53.6 %
Average Score 
+27%
Read
Avg. Sequential Read Speed 		380 MB/s Much faster read speed.
+67% 		227 MB/s
Write
Avg. Sequential Write Speed 		146 MB/s Faster write speed.
+20% 		122 MB/s
4K Read
Avg. 4K Random Read Speed 		27.5 MB/s Faster random read.
+20% 		22.9 MB/s
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s Faster random write.
+10% 		73.9 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		190 MB/s Faster mixed IO speed.
+23% 		155 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		33.6 MB/s Faster random mixed IO.
+14% 		29.4 MB/s
SusWrite
Avg. Sustained Write Speed 		121 MB/s Much faster sustained write speed.
+37% 		88.3 MB/s
Peak Score 
+7%
Read
Peak Sequential Read Speed 		428 MB/s Faster peak read speed.
+11% 		385 MB/s
Write
Peak Sequential Write Speed 		168 MB/s Slightly faster peak write speed.
+10% 		153 MB/s
4K Read
Peak 4K Random Read Speed 		32 MB/s 32.1 MB/s +0%
4K Write
Peak 4K Random Write Speed 		116 MB/s Slightly faster peak random write.
+7% 		108 MB/s
Mixed
Peak Sequential Mixed IO Speed 		216 MB/s Slightly faster peak mixed IO speed.
+6% 		204 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		41.1 MB/s 41.4 MB/s +1%
SusWrite
Peak Sequential Sustained Write 60s Average 		148 MB/s Faster peak sustained write speed.
+17% 		127 MB/s
Value & Sentiment 
+249%
Market Share
Based on 77,577,302 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.11 % Hugely higher market share.
+1,000%
Value
Value For Money 		10.7 % Better value.
+23% 		8.68 %
User Rating
UBM User Rating 		51 % 54 % Slightly more popular.
+6%
Price
Price (score) 		$40 $36 Cheaper.
+11%
Nice To Haves 
+19%
Age
Newest 		152 Months 144 Months Slightly more recent.
+5%
DQ Read
Peak 4K-64Thread Read Speed 		199 MB/s +2% 195 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		166 MB/s Slightly faster peak deep queue write.
+8% 		153 MB/s
AS-SSD Total
AS-SSD Total Score 		712 Pts +5% 679 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		171 MB/s Faster peak deep queue mixed IO.
+29% 		133 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		160 MB/s Much faster deep queue read.
+58% 		101 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		143 MB/s Faster deep queue write.
+21% 		118 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		125 MB/s Much faster deep queue mixed IO.
+36% 		91.6 MB/s
Specifications 
Capacity
Capacity 		128GB 120GB
Conclusion 
Average Bench 68.6%
Average Bench 53.6%

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]

MORE DETAILS

The 120GB Kingston V300 has a performance profile that closely matches its 240GB sibling. Both drives utilize a Sandforce LSI controller and therefore demonstrate relative weakness in their write speeds. With burst sequential read/write speeds of 497/166 MBps and 4k burst read/write speeds of 30/97 MBps the 120GB V300 is amongst the slower SSDs I have seen. A concern I have with this drive is the relatively slow real world speeds our users have experienced. Most drives have average throughput rates that are around 75% of peak. Both this and the 240GB V300s, based on 130 samples, are averaging sequential read rates of around 240 MBps which is less than 50% of peak. It's not all bad news though because the V300's are priced extremely aggressively and as a result still offer decent value for money. [Feb '14 SSDrivePro]

MORE DETAILS

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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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Solid State Drives
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