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SamsungMZ-76E4T0B
SamsungMZ-7PD256BW
▲ 5236 ▼

Controller: Samsung MJX. Memory: Samsung 64 layer TLC V-NAND. Release date ≈ Q1 2018.

VS
▲ 5420,557 ▼

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

Effective Speed 
+19%
Real World Speed
Performance profile from 80,360 user samples
Benchmark your SSD here
7,241 User Benchmarks
Best Bench: 133% 2TB free
Worst Bench: 85% 3TB free (System drive)
Poor: 85% Great: 133%
SPEED RANK: 210th / 1080
73,119 User Benchmarks
Best Bench: 116% 238GB free
Worst Bench: 68% 11GB free (System drive)
Poor: 68% Great: 116%
SPEED RANK: 287th / 1080
Effective Speed
Effective SSD Speed 		113 % Faster effective speed.
+19% 		95 %
Average Score 
+24%
Read
Avg. Sequential Read Speed 		485 MB/s Slightly faster read speed.
+6% 		459 MB/s
Write
Avg. Sequential Write Speed 		450 MB/s Faster write speed.
+23% 		367 MB/s
4K Read
Avg. 4K Random Read Speed 		38.1 MB/s Faster random read.
+23% 		31 MB/s
4K Write
Avg. 4K Random Write Speed 		91.3 MB/s Slightly faster random write.
+7% 		85.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		425 MB/s Much faster mixed IO speed.
+40% 		303 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		51.1 MB/s Faster random mixed IO.
+29% 		39.5 MB/s
SusWrite
Avg. Sustained Write Speed 		437 MB/s Much faster sustained write speed.
+40% 		312 MB/s
Peak Score 
+15%
Read
Peak Sequential Read Speed 		516 MB/s +1% 510 MB/s
Write
Peak Sequential Write Speed 		491 MB/s +2% 480 MB/s
4K Read
Peak 4K Random Read Speed 		46.6 MB/s Faster peak random read.
+29% 		36.1 MB/s
4K Write
Peak 4K Random Write Speed 		127 MB/s Faster peak random write.
+11% 		114 MB/s
Mixed
Peak Sequential Mixed IO Speed 		465 MB/s Faster peak mixed IO speed.
+26% 		368 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		63.8 MB/s Much faster peak random mixed IO.
+34% 		47.6 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		490 MB/s +3% 477 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,604,989 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.05 % Insanely higher market share.
+∞%
Value
Value For Money 		42.9 % Hugely better value.
+422% 		8.21 %
User Rating
UBM User Rating 		52 % 54 % +4%
Price
Price (score) 		$380 $175 Much cheaper.
+54%
Nice To Haves 
+33%
Age
Newest 		81+ Months Much more recent.
+44% 		145 Months
DQ Read
Peak 4K-64Thread Read Speed 		387 MB/s +1% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s Slightly faster peak deep queue write.
+8% 		334 MB/s
AS-SSD Total
AS-SSD Total Score 		1,287 Pts Slightly stronger server IO.
+5% 		1,221 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		370 MB/s Hugely faster peak deep queue mixed IO.
+110% 		176 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		327 MB/s 346 MB/s Slightly faster deep queue read.
+6%
ADQ Write
Avg. 4K-64Thread Write Speed 		273 MB/s +4% 262 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		288 MB/s Hugely faster deep queue mixed IO.
+96% 		147 MB/s
Specifications 
Capacity
Capacity 		4TB 256GB
Conclusion 
Average Bench 113%
Average Bench 95%

Currently one of the highest capacity consumer SATA SSD on the market, this SSD offers huge amount of capacity and high R/W which is limited by SATA 3 max bandwidth. However, 4TB SSD and bigger begin to offer lower GB per dollar (which equals lower value) than the lower capacity SSD in the market such as 2TB NVMe SSD (Intel 660p 2TB at $194-209). [Dec '19 ColdSpy]

MORE DETAILS

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

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73,119
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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.
  • Best value for money - Value for money is based on real world performance.
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Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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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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ALL FAQs »

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Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
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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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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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The Best
CPUGPUSSD
Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $125
Intel Core i5-12600K $160Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $330
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