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SamsungMZ-75E500B
SamsungMZ-7PD128BW
▲ 539,881 ▼

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

VS
▲ 542,764 ▼

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

Effective Speed 
+25%
Real World Speed
Performance profile from 730,506 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
34,842 User Benchmarks
Best Bench: 110% 62GB free
Worst Bench: 62% 119GB free
Poor: 62% Great: 110%
SPEED RANK: 344th / 1080
Effective Speed
Effective SSD Speed 		112 % Faster effective speed.
+25% 		89.5 %
Average Score 
+29%
Read
Avg. Sequential Read Speed 		471 MB/s Slightly faster read speed.
+6% 		444 MB/s
Write
Avg. Sequential Write Speed 		441 MB/s Much faster write speed.
+31% 		336 MB/s
4K Read
Avg. 4K Random Read Speed 		40.3 MB/s Much faster random read.
+32% 		30.5 MB/s
4K Write
Avg. 4K Random Write Speed 		95.6 MB/s Faster random write.
+17% 		81.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		376 MB/s Much faster mixed IO speed.
+40% 		268 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		53.8 MB/s Much faster random mixed IO.
+50% 		35.9 MB/s
SusWrite
Avg. Sustained Write Speed 		365 MB/s Faster sustained write speed.
+28% 		286 MB/s
Peak Score 
+20%
Read
Peak Sequential Read Speed 		507 MB/s +2% 497 MB/s
Write
Peak Sequential Write Speed 		492 MB/s Faster peak write speed.
+11% 		445 MB/s
4K Read
Peak 4K Random Read Speed 		47.5 MB/s Much faster peak random read.
+31% 		36.3 MB/s
4K Write
Peak 4K Random Write Speed 		128 MB/s Faster peak random write.
+13% 		113 MB/s
Mixed
Peak Sequential Mixed IO Speed 		414 MB/s Faster peak mixed IO speed.
+25% 		331 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		65.9 MB/s Much faster peak random mixed IO.
+49% 		44.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		488 MB/s Faster peak sustained write speed.
+11% 		440 MB/s
Value & Sentiment 
+531%
Market Share
Based on 77,608,390 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.7 % Insanely higher market share.
+1,650% 		0.04 %
Value
Value For Money 		27.5 % Hugely better value.
+432% 		5.17 %
User Rating
UBM User Rating 		53 % 54 % +2%
Price
Price (score) 		$85 Much cheaper.
+43% 		$150
Nice To Haves 
+45%
Age
Newest 		119 Months More recent.
+18% 		145 Months
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s +3% 376 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s Slightly faster peak deep queue write.
+10% 		330 MB/s
AS-SSD Total
AS-SSD Total Score 		1,288 Pts Slightly stronger server IO.
+8% 		1,196 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		371 MB/s Hugely faster peak deep queue mixed IO.
+139% 		155 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		348 MB/s +5% 332 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		302 MB/s Faster deep queue write.
+23% 		245 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		317 MB/s Hugely faster deep queue mixed IO.
+152% 		126 MB/s
Specifications 
Capacity
Capacity 		500GB 128GB
Conclusion 
Average Bench 112%
Average Bench 89.5%

The 128GB 840 Pro is a rock solid performer. On release, nearly a year and a half ago, the Pro smashed several speed records. Today, with sequential read/write speeds of 519/438 MBps, the Pro is still one of the fastest SSDs available. One of the Pro's top competitors is Samsungs own, newer 840 Evo. Looking at a raw synthetic speed comparison of the 128GB Pro and Evo is a little misleading. On the face of it the Pro only has a marginal lead over the Evo. This due to the fact that the Evo can only maintain its burst write speed for transfers of up to 3GB, the size of its SLC cache. The Pro on the other hand can sustain higher throughputs indefinitely. The Pro also utilizes MLC which is rated for far more erase cycles than the TLC used in the Evo. Server IO is often continuous and would quickly exhaust the 3GB cache on the Evo but for typical consumer use the Evo will remain within the SLC cache most of the time. [Feb '14 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]

Group Test Results

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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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  • - CPU tests include: integer, floating and string
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  • - Reports are generated and presented on userbenchmark.com
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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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The Best
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Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $330
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