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SamsungMZ-7KE256BW
OCZVTR180-25SAT3-240G
▲ 5441,223 ▼

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

VS
▲ 53454 ▼

Controller: OCZ Barefoot 3 M00. Flash: Toshiba 19nm (2nd gen) MLC NAND. Release date: Q1 2015.

Effective Speed 
+13%
Real World Speed
Performance profile from 143,012 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
1,083 User Benchmarks
Best Bench: 108% 96GB free (System drive)
Worst Bench: 67% 83GB free (System drive)
Poor: 67% Great: 108%
SPEED RANK: 337th / 1080
Effective Speed
Effective SSD Speed 		102 % Faster effective speed.
+13% 		90.2 %
Average Score 
+13%
Read
Avg. Sequential Read Speed 		469 MB/s Faster read speed.
+17% 		401 MB/s
Write
Avg. Sequential Write Speed 		396 MB/s 422 MB/s Slightly faster write speed.
+7%
4K Read
Avg. 4K Random Read Speed 		33.9 MB/s Much faster random read.
+45% 		23.3 MB/s
4K Write
Avg. 4K Random Write Speed 		89.6 MB/s Slightly faster random write.
+7% 		83.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s +4% 321 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		44.1 MB/s Much faster random mixed IO.
+35% 		32.7 MB/s
SusWrite
Avg. Sustained Write Speed 		346 MB/s 384 MB/s Faster sustained write speed.
+11%
Peak Score 
+18%
Read
Peak Sequential Read Speed 		515 MB/s Faster peak read speed.
+15% 		448 MB/s
Write
Peak Sequential Write Speed 		488 MB/s +0% 486 MB/s
4K Read
Peak 4K Random Read Speed 		43.6 MB/s Much faster peak random read.
+56% 		27.9 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s 127 MB/s +2%
Mixed
Peak Sequential Mixed IO Speed 		383 MB/s Slightly faster peak mixed IO speed.
+8% 		353 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		56.7 MB/s Much faster peak random mixed IO.
+42% 		40 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		484 MB/s +5% 461 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,422,309 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.08 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		12.3 % Much better value.
+54% 		7.95 %
User Rating
UBM User Rating 		54 % +2% 53 %
Price
Price (score) 		$112 Cheaper.
+30% 		$160
Nice To Haves 
+8%
Age
Newest 		124 Months 116 Months Slightly more recent.
+6%
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s Faster peak deep queue read.
+12% 		347 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s 372 MB/s +3%
AS-SSD Total
AS-SSD Total Score 		1,280 Pts Slightly stronger server IO.
+7% 		1193 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		356 MB/s Faster peak deep queue mixed IO.
+24% 		287 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		344 MB/s Faster deep queue read.
+13% 		304 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s 298 MB/s Slightly faster deep queue write.
+6%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		295 MB/s Faster deep queue mixed IO.
+19% 		247 MB/s
Specifications 
Capacity
Capacity 		256GB 240GB
Conclusion 
Average Bench 102%
Average Bench 90.2%

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

The OCZ Vector 180 has a five year warranty and is rated for 50GB/day over that time. In terms of hardware the Vector 180 is basically a rebadged two year old Vector 150. The 180 does feature "Power Failure Management Plus" which protects data that has already been written to the drive but any data that is in the process of being written is still at risk. In terms of performance the Vector 180, like its predecessor (Vector 150) is very strong. With an effective speed of 98.7% the Vector appears to hold its own with the likes of the similarly priced Samsung 850 Pro. But taking a closer look at the performance differences between the 850 Pro and Vector 180 shows that although the headline speeds are comparable, the Vector has significantly slower 4K Mixed IO speeds, this won't impact most consumers but it could be a sticking point for power users. [Jun '15 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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