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SamsungMZ-75E500B
SamsungMZ-7PD256BW
▲ 539,881 ▼

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

VS
▲ 5420,557 ▼

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

Effective Speed 
+18%
Real World Speed
Performance profile from 768,783 user samples
Benchmark your SSD here
695,664 User Benchmarks
Best Bench: 134% 162GB free
Worst Bench: 80% 162GB free (System drive)
Poor: 80% Great: 134%
SPEED RANK: 217th / 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 		112 % Faster effective speed.
+18% 		95 %
Average Score 
+20%
Read
Avg. Sequential Read Speed 		471 MB/s +3% 459 MB/s
Write
Avg. Sequential Write Speed 		441 MB/s Faster write speed.
+20% 		367 MB/s
4K Read
Avg. 4K Random Read Speed 		40.3 MB/s Faster random read.
+30% 		31 MB/s
4K Write
Avg. 4K Random Write Speed 		95.6 MB/s Faster random write.
+12% 		85.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		376 MB/s Faster mixed IO speed.
+24% 		303 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		53.8 MB/s Much faster random mixed IO.
+36% 		39.5 MB/s
SusWrite
Avg. Sustained Write Speed 		365 MB/s Faster sustained write speed.
+17% 		312 MB/s
Peak Score 
+14%
Read
Peak Sequential Read Speed 		507 MB/s 510 MB/s +1%
Write
Peak Sequential Write Speed 		492 MB/s +2% 480 MB/s
4K Read
Peak 4K Random Read Speed 		47.5 MB/s Much faster peak random read.
+32% 		36.1 MB/s
4K Write
Peak 4K Random Write Speed 		128 MB/s Faster peak random write.
+12% 		114 MB/s
Mixed
Peak Sequential Mixed IO Speed 		414 MB/s Faster peak mixed IO speed.
+12% 		368 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		65.9 MB/s Much faster peak random mixed IO.
+38% 		47.6 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		488 MB/s +2% 477 MB/s
Value & Sentiment 
+396%
Market Share
Based on 77,605,476 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.7 % Insanely higher market share.
+1,300% 		0.05 %
Value
Value For Money 		27.5 % Hugely better value.
+235% 		8.21 %
User Rating
UBM User Rating 		53 % 54 % +2%
Price
Price (score) 		$85 Much cheaper.
+51% 		$175
Nice To Haves 
+34%
Age
Newest 		119 Months More recent.
+18% 		145 Months
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s +0% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s Slightly faster peak deep queue write.
+8% 		334 MB/s
AS-SSD Total
AS-SSD Total Score 		1,288 Pts Slightly stronger server IO.
+6% 		1,221 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		371 MB/s Hugely faster peak deep queue mixed IO.
+111% 		176 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		348 MB/s +1% 346 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		302 MB/s Faster deep queue write.
+15% 		262 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		317 MB/s Hugely faster deep queue mixed IO.
+116% 		147 MB/s
Specifications 
Capacity
Capacity 		500GB 256GB
Conclusion 
Average Bench 112%
Average Bench 95%

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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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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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?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
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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