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SamsungMZ-7KE256BW
OCZVTR150-25SAT3-240G
$246
▲ 5441,223 ▼

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

VS
▲ 531,735 ▼
 $246 

Controller: OCZ Barefoot 3 M00. Flash: Toshiba 19nm (1st gen) MLC NAND. Release date: Q4 2013.

Effective Speed 
+14%
Real World Speed
Performance profile from 143,536 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
1,607 User Benchmarks
Best Bench: 110% 172GB free
Worst Bench: 60% 65GB free
Poor: 60% Great: 110%
SPEED RANK: 353rd / 1080
Effective Speed
Effective SSD Speed 		102 % Faster effective speed.
+14% 		89 %
Average Score 
+14%
Read
Avg. Sequential Read Speed 		469 MB/s Slightly faster read speed.
+8% 		433 MB/s
Write
Avg. Sequential Write Speed 		396 MB/s 414 MB/s +5%
4K Read
Avg. 4K Random Read Speed 		33.9 MB/s Much faster random read.
+56% 		21.7 MB/s
4K Write
Avg. 4K Random Write Speed 		89.6 MB/s Slightly faster random write.
+10% 		81.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s 343 MB/s +3%
4K Mixed
Avg. 4K Random Mixed IO Speed 		44.1 MB/s Much faster random mixed IO.
+37% 		32.2 MB/s
SusWrite
Avg. Sustained Write Speed 		346 MB/s 367 MB/s Slightly faster sustained write speed.
+6%
Peak Score 
+16%
Read
Peak Sequential Read Speed 		515 MB/s +4% 493 MB/s
Write
Peak Sequential Write Speed 		488 MB/s +0% 487 MB/s
4K Read
Peak 4K Random Read Speed 		43.6 MB/s Much faster peak random read.
+66% 		26.3 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s 126 MB/s +1%
Mixed
Peak Sequential Mixed IO Speed 		383 MB/s 392 MB/s +2%
4K Mixed
Peak 4K Random Mixed IO Speed 		56.7 MB/s Much faster peak random mixed IO.
+41% 		40.3 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		484 MB/s +1% 477 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,569,753 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.1 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		12.3 % Hugely better value.
+116% 		5.68 %
User Rating
UBM User Rating 		54 % +2% 53 %
Price
Price (score) 		$112 Much cheaper.
+54% 		$246
Nice To Haves 
+7%
Age
Newest 		124 Months Slightly more recent.
+6% 		132 Months
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s Slightly faster peak deep queue read.
+6% 		365 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s 367 MB/s +2%
AS-SSD Total
AS-SSD Total Score 		1,280 Pts Slightly stronger server IO.
+5% 		1,215 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		356 MB/s Faster peak deep queue mixed IO.
+14% 		313 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		344 MB/s Faster deep queue read.
+12% 		307 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s 285 MB/s +1%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		295 MB/s Faster deep queue mixed IO.
+15% 		257 MB/s
Specifications 
Capacity
Capacity 		256GB 240GB
Conclusion 
Average Bench 102%
Average Bench 89%

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

Comparing the 150 to the original Vector is disappointing, the newer 150 actually offers marginally worse performance than its predecessor. A strange result but verified (at least partly) by figures on OCZ's own website: 100K 4K read IOPS for the Vector vs 90K 4K read IOPS for the 150. The newer 150 comes with a 5 year warranty which covers 50GB/day vs. the original Vectors 20GB/day but even this should be taken with a pinch of salt considering that the OCZ stock price is currently trading at around seven cents per share, an all time low. Despite the fact that new Vector 150 performs worse than its predecessor it's still a very competent performer and if prices drop, it has the potential to become a decent value proposition. In the meantime however there are far better deals available elsewhere.  [Dec '13 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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 Frequently Asked Questions

Storage Devices FAQ
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Solid State Drives
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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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