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OCZAGT4-25SAT3-256G
KingstonSV300S37A/240G
▲ 51500 ▼

Controller: Indilinx Everest 2 IDX400M00. Flash Memory: Micron Asynchronous 25nm MLC. Release date: Q2 2012.

VS
▲ 538,212 ▼

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

Effective Speed 
+13%
Real World Speed
Performance profile from 178,129 user samples
Benchmark your SSD here
1,416 User Benchmarks
Best Bench: 87% 238GB free
Worst Bench: 57% 185GB free (System drive)
Poor: 57% Great: 87%
SPEED RANK: 633rd / 1080
176,713 User Benchmarks
Best Bench: 85% 223GB free
Worst Bench: 41% 91GB free (System drive)
Poor: 41% Great: 85%
SPEED RANK: 760th / 1080
Effective Speed
Effective SSD Speed 		72.3 % Faster effective speed.
+13% 		64.1 %
Average Score 
+15%
Read
Avg. Sequential Read Speed 		276 MB/s 286 MB/s +4%
Write
Avg. Sequential Write Speed 		304 MB/s Much faster write speed.
+45% 		209 MB/s
4K Read
Avg. 4K Random Read Speed 		18.4 MB/s 23.7 MB/s Faster random read.
+29%
4K Write
Avg. 4K Random Write Speed 		94.5 MB/s Faster random write.
+21% 		78.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		193 MB/s 221 MB/s Faster mixed IO speed.
+15%
4K Mixed
Avg. 4K Random Mixed IO Speed 		27 MB/s 32.8 MB/s Faster random mixed IO.
+21%
SusWrite
Avg. Sustained Write Speed 		275 MB/s Hugely faster sustained write speed.
+108% 		132 MB/s
Peak Score 
+4%
Read
Peak Sequential Read Speed 		336 MB/s 416 MB/s Faster peak read speed.
+24%
Write
Peak Sequential Write Speed 		391 MB/s Much faster peak write speed.
+48% 		264 MB/s
4K Read
Peak 4K Random Read Speed 		21.3 MB/s 33.1 MB/s Much faster peak random read.
+55%
4K Write
Peak 4K Random Write Speed 		131 MB/s Faster peak random write.
+19% 		110 MB/s
Mixed
Peak Sequential Mixed IO Speed 		236 MB/s 281 MB/s Faster peak mixed IO speed.
+19%
4K Mixed
Peak 4K Random Mixed IO Speed 		31.8 MB/s 44.2 MB/s Much faster peak random mixed IO.
+39%
SusWrite
Peak Sequential Sustained Write 60s Average 		382 MB/s Hugely faster peak sustained write speed.
+100% 		191 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 76,300,872 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.11 % Insanely higher market share.
+∞%
Value
Value For Money 		20.9 % Better value.
+19% 		17.6 %
User Rating
UBM User Rating 		51 % 53 % +4%
Price
Price (score) 		$35 +0% $35
Nice To Haves 
+15%
Age
Newest 		146 Months 140 Months +4%
DQ Read
Peak 4K-64Thread Read Speed 		255 MB/s 259 MB/s +2%
DQ Write
Peak 4K-64Thread Write Speed 		316 MB/s Faster peak deep queue write.
+24% 		255 MB/s
AS-SSD Total
AS-SSD Total Score 		964 Pts Slightly stronger server IO.
+7% 		901 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		208 MB/s 213 MB/s +2%
ADQ Read
Avg. 4K-64Thread Read Speed 		231 MB/s Much faster deep queue read.
+46% 		158 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		235 MB/s Faster deep queue write.
+22% 		192 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		194 MB/s Faster deep queue mixed IO.
+27% 		153 MB/s
Specifications 
Capacity
Capacity 		256GB 240GB
Conclusion 
Average Bench 72.3%
Average Bench 64.1%
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The OCZ Agility 4 is a relatively old SSD and has been included in the group test as a reference. In terms of overall speed the Agility 4 lags the current ten market leaders by an average of around 30%, considering that the Agility 4 is only 16 months old this highlights just how quickly the SSD market has evolved over the last two years. It's probably not worth upgrading for the sake of more speed unless you have a specific use case that demands it but if you are looking for a speed upgrade, you will gain up to around 50% by going for the Samsung 840 Pro or the OCZ Vector. [Sep '13 SSDrivePro]

MORE DETAILS

This is yet another Sandforce 2881 based SSD from Kingston, this time coupled with newer 19nm Nand flash. In terms of performance the V300 is nothing we haven't seen before with other Sandforce based SSDs. A side-by-side comparison with the HyperX shows that the two drives have a near identical performance profile which is more than a little disappointing given that the V300 is 16 months newer. With a sequential write speed of just 280 MB/s the V300 lags the group leaders by 62%, an expected result for a Sandforce based drive. To conclude, Kingston aren't offering anything new with the V300, consequently there are far faster (and cheaper) drives available elsewhere including the excellent Samsung Evo which is the current group leader. [Jan '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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