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SamsungMZ-7PD256BW
OCZVTR180-25SAT3-480G
$140
▲ 5420,557 ▼

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

VS
▲ 53235 ▼
 $140 

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

Effective Speed 
+4%
Real World Speed
Performance profile from 74,222 user samples
Benchmark your SSD here
73,119 User Benchmarks
Best Bench: 116% 238GB free
Worst Bench: 68% 11GB free (System drive)
Poor: 68% Great: 116%
SPEED RANK: 287th / 1080
1,103 User Benchmarks
Best Bench: 110% 169GB free
Worst Bench: 62% 200GB free (System drive)
Poor: 62% Great: 110%
SPEED RANK: 321st / 1080
Effective Speed
Effective SSD Speed 		95 % +4% 91.1 %
Average Score 
+4%
Read
Avg. Sequential Read Speed 		459 MB/s Faster read speed.
+12% 		410 MB/s
Write
Avg. Sequential Write Speed 		367 MB/s 405 MB/s Faster write speed.
+10%
4K Read
Avg. 4K Random Read Speed 		31 MB/s Faster random read.
+23% 		25.2 MB/s
4K Write
Avg. 4K Random Write Speed 		85.6 MB/s 89.3 MB/s +4%
Mixed
Avg. Sequential Mixed IO Speed 		303 MB/s +4% 290 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		39.5 MB/s Faster random mixed IO.
+18% 		33.4 MB/s
SusWrite
Avg. Sustained Write Speed 		312 MB/s 364 MB/s Faster sustained write speed.
+17%
Peak Score 
+6%
Read
Peak Sequential Read Speed 		510 MB/s Slightly faster peak read speed.
+8% 		471 MB/s
Write
Peak Sequential Write Speed 		480 MB/s 485 MB/s +1%
4K Read
Peak 4K Random Read Speed 		36.1 MB/s Faster peak random read.
+20% 		30.1 MB/s
4K Write
Peak 4K Random Write Speed 		114 MB/s 134 MB/s Faster peak random write.
+18%
Mixed
Peak Sequential Mixed IO Speed 		368 MB/s Faster peak mixed IO speed.
+11% 		333 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		47.6 MB/s Faster peak random mixed IO.
+18% 		40.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		477 MB/s Slightly faster peak sustained write speed.
+7% 		447 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,571,363 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.05 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		8.21 % 14.9 % Hugely better value.
+82%
User Rating
UBM User Rating 		54 % +2% 53 %
Price
Price (score) 		$175 $140 Cheaper.
+20%
Nice To Haves 
+14%
Age
Newest 		145 Months 116 Months More recent.
+20%
DQ Read
Peak 4K-64Thread Read Speed 		385 MB/s +3% 373 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		334 MB/s 359 MB/s Slightly faster peak deep queue write.
+7%
AS-SSD Total
AS-SSD Total Score 		1,221 Pts 1,233 Pts +1%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		176 MB/s 248 MB/s Much faster peak deep queue mixed IO.
+41%
ADQ Read
Avg. 4K-64Thread Read Speed 		346 MB/s Slightly faster deep queue read.
+6% 		326 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		262 MB/s 269 MB/s +3%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		147 MB/s 214 MB/s Much faster deep queue mixed IO.
+46%
Specifications 
Capacity
Capacity 		256GB 480GB
Conclusion 
Average Bench 95%
Average Bench 91.1%

The 840 Pro is stunning. Samsung have created a completely in-house package including both the controller and their own new 21nm toggle mode NAND. On release (Oct '12) this was the fastest performing deep queue depth consumer grade SSD available. Fast forward six months (Apr '13) and the 840 Pro still holds both the random read/write deep queue depth speed records of 384 MB/s and 326 MB/s, impressive considering how fast the SSD space tends to move. There are no obvious weaknesses, in-fact the 840 pro takes first place in nearly all of the speed categories and is only seriously rivalled by one drive, the OCZ Vector. To conclude, in terms of both outright performance, particularly server orientated, and value for money the 256GB and 128GB 840 Pros are amongst the top handful of drives currently available. [Jun '13 SSDrivePro]

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1,103
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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

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
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
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What is sequential write speed?
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What is incompressible data?
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Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
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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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