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SamsungMZ-7PD256BW
OCZVTX450-25SAT3-128G
▲ 5420,557 ▼

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

VS
▲ 51266 ▼

Controller: Indilinx Barefoot 3 M10 IDX500M10-BC. Flash Memory: IMFT Synchronous 20nm MLC. Release date: Q2 2013.

Effective Speed 
+26%
Real World Speed
Performance profile from 74,159 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
1,040 User Benchmarks
Best Bench: 90% 130GB free
Worst Bench: 57% 72GB free (System drive)
Poor: 57% Great: 90%
SPEED RANK: 575th / 1080
Effective Speed
Effective SSD Speed 		95 % Faster effective speed.
+26% 		75.5 %
Average Score 
+29%
Read
Avg. Sequential Read Speed 		459 MB/s Faster read speed.
+12% 		410 MB/s
Write
Avg. Sequential Write Speed 		367 MB/s Much faster write speed.
+37% 		268 MB/s
4K Read
Avg. 4K Random Read Speed 		31 MB/s Much faster random read.
+54% 		20.1 MB/s
4K Write
Avg. 4K Random Write Speed 		85.6 MB/s 87.6 MB/s +2%
Mixed
Avg. Sequential Mixed IO Speed 		303 MB/s Faster mixed IO speed.
+15% 		263 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		39.5 MB/s Much faster random mixed IO.
+40% 		28.2 MB/s
SusWrite
Avg. Sustained Write Speed 		312 MB/s Much faster sustained write speed.
+44% 		217 MB/s
Peak Score 
+37%
Read
Peak Sequential Read Speed 		510 MB/s Faster peak read speed.
+11% 		459 MB/s
Write
Peak Sequential Write Speed 		480 MB/s Much faster peak write speed.
+70% 		283 MB/s
4K Read
Peak 4K Random Read Speed 		36.1 MB/s Much faster peak random read.
+52% 		23.7 MB/s
4K Write
Peak 4K Random Write Speed 		114 MB/s 132 MB/s Faster peak random write.
+16%
Mixed
Peak Sequential Mixed IO Speed 		368 MB/s Faster peak mixed IO speed.
+29% 		286 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		47.6 MB/s Much faster peak random mixed IO.
+41% 		33.7 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		477 MB/s Much faster peak sustained write speed.
+74% 		274 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,552,989 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.04 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		8.21 % Better value.
+18% 		6.96 %
User Rating
UBM User Rating 		54 % Slightly more popular.
+6% 		51 %
Price
Price (score) 		$175 $80 Much cheaper.
+54%
Nice To Haves 
+1%
Age
Newest 		145 Months 138 Months +5%
DQ Read
Peak 4K-64Thread Read Speed 		385 MB/s Faster peak deep queue read.
+28% 		301 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		334 MB/s Faster peak deep queue write.
+17% 		286 MB/s
AS-SSD Total
AS-SSD Total Score 		1,221 Pts Stronger server IO.
+21% 		1,005 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		176 MB/s 262 MB/s Much faster peak deep queue mixed IO.
+49%
ADQ Read
Avg. 4K-64Thread Read Speed 		346 MB/s Much faster deep queue read.
+31% 		265 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		262 MB/s Slightly faster deep queue write.
+5% 		249 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		147 MB/s 227 MB/s Much faster deep queue mixed IO.
+54%
Specifications 
Capacity
Capacity 		256GB 128GB
Conclusion 
Average Bench 95%
Average Bench 75.5%

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]

MORE DETAILS

The 128GB Vertex 450 has a reasonable but somewhat unusual performance profile. The main weakness is its sequential write speed which is only 282 MB/s peak. This implies that the 128GB version has fewer NAND modules than both its larger 256GB sibling and several other leading 128GB models. Other SSDs, including some 128GB models can consistently achieve sequential write speeds in the 500 MB/s range. A handicap of this magnitude on a key performance metric would normally relegate an SSD to the lower divisions but the Vertex 450 offsets its poor sequential write speed with a record breaking 4K write speed of 158 MB/s which is the highest I have ever seen on any SSD. Overall the Vertex 450 has an average, but quirky, performance profile and is reasonably priced however there are both faster and cheaper alternatives available on the SSD leaderboard.  [Feb '14 SSDrivePro]

MORE DETAILS

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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]

Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
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 Frequently Asked Questions

Storage Devices FAQ
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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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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?
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