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SamsungMZ-7KE256BW
KingstonSV300S37A/240G
▲ 5441,223 ▼

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND. Release date: Q3 2014.

VS
▲ 538,212 ▼

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

Effective Speed 
+59%
Real World Speed
Performance profile from 318,642 user samples
Benchmark your SSD here
141,929 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 71% 71GB free (System drive)
Poor: 71% Great: 124%
SPEED RANK: 256th / 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 		102 % Much faster effective speed.
+59% 		64.1 %
Average Score 
+65%
Read
Avg. Sequential Read Speed 		469 MB/s Much faster read speed.
+64% 		286 MB/s
Write
Avg. Sequential Write Speed 		396 MB/s Hugely faster write speed.
+89% 		209 MB/s
4K Read
Avg. 4K Random Read Speed 		33.9 MB/s Much faster random read.
+43% 		23.7 MB/s
4K Write
Avg. 4K Random Write Speed 		89.6 MB/s Faster random write.
+14% 		78.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s Much faster mixed IO speed.
+51% 		221 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		44.1 MB/s Much faster random mixed IO.
+34% 		32.8 MB/s
SusWrite
Avg. Sustained Write Speed 		346 MB/s Hugely faster sustained write speed.
+162% 		132 MB/s
Peak Score 
+53%
Read
Peak Sequential Read Speed 		515 MB/s Faster peak read speed.
+24% 		416 MB/s
Write
Peak Sequential Write Speed 		488 MB/s Hugely faster peak write speed.
+85% 		264 MB/s
4K Read
Peak 4K Random Read Speed 		43.6 MB/s Much faster peak random read.
+32% 		33.1 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s Faster peak random write.
+14% 		110 MB/s
Mixed
Peak Sequential Mixed IO Speed 		383 MB/s Much faster peak mixed IO speed.
+36% 		281 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		56.7 MB/s Faster peak random mixed IO.
+28% 		44.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		484 MB/s Hugely faster peak sustained write speed.
+153% 		191 MB/s
Value & Sentiment 
+4%
Market Share
Based on 77,611,219 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.09 % 0.11 % Higher market share.
+22%
Value
Value For Money 		12.5 % Much better value.
+49% 		8.35 %
User Rating
UBM User Rating 		54 % +2% 53 %
Price
Price (score) 		$110 $95 Cheaper.
+14%
Nice To Haves 
+59%
Age
Newest 		124 Months More recent.
+14% 		144 Months
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s Much faster peak deep queue read.
+50% 		259 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s Much faster peak deep queue write.
+42% 		255 MB/s
AS-SSD Total
AS-SSD Total Score 		1,280 Pts Much stronger server IO.
+42% 		901 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		356 MB/s Much faster peak deep queue mixed IO.
+67% 		213 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		344 MB/s Hugely faster deep queue read.
+118% 		158 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s Much faster deep queue write.
+47% 		192 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		295 MB/s Hugely faster deep queue mixed IO.
+93% 		153 MB/s
Specifications 
Capacity
Capacity 		256GB 240GB
Conclusion 
Average Bench 102%
Average Bench 64.1%

The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 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]

Group Test Results

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 Frequently Asked Questions

Storage Devices FAQ
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Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
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