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SamsungMZ-75E4T0B
SamsungMZ-77E4T0B
▲ 5020 ▼

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date ≈ Q3 2016.

VS
▲ 5121 ▼

Controller: Samsung MKX. Memory: Samsung 128 layer TLC V-NAND. Release date ≈ Q1 2021.

Effective Speed 
+3%
Real World Speed
Performance profile from 10,219 user samples
Benchmark your SSD here
765 User Benchmarks
Best Bench: 133% 2.5TB free
Worst Bench: 85% 965GB free
Poor: 85% Great: 133%
SPEED RANK: 211th / 1080
9,454 User Benchmarks
Best Bench: 137% 3.5TB free
Worst Bench: 90% 1.5TB free
Poor: 90% Great: 137%
SPEED RANK: 203rd / 1080
Effective Speed
Effective SSD Speed 		113 % 117 % +3%
Average Score 
+3%
Read
Avg. Sequential Read Speed 		475 MB/s 481 MB/s +1%
Write
Avg. Sequential Write Speed 		436 MB/s 451 MB/s +3%
4K Read
Avg. 4K Random Read Speed 		39 MB/s 40.5 MB/s +4%
4K Write
Avg. 4K Random Write Speed 		87.8 MB/s 90 MB/s +3%
Mixed
Avg. Sequential Mixed IO Speed 		402 MB/s 426 MB/s Slightly faster mixed IO speed.
+6%
4K Mixed
Avg. 4K Random Mixed IO Speed 		51.7 MB/s 53.6 MB/s +4%
SusWrite
Avg. Sustained Write Speed 		432 MB/s 445 MB/s +3%
Peak Score 
+3%
Read
Peak Sequential Read Speed 		510 MB/s 517 MB/s +1%
Write
Peak Sequential Write Speed 		489 MB/s 491 MB/s +0%
4K Read
Peak 4K Random Read Speed 		46.5 MB/s 48.8 MB/s +5%
4K Write
Peak 4K Random Write Speed 		126 MB/s 131 MB/s +4%
Mixed
Peak Sequential Mixed IO Speed 		441 MB/s 464 MB/s Slightly faster peak mixed IO speed.
+5%
4K Mixed
Peak 4K Random Mixed IO Speed 		64.6 MB/s 68.1 MB/s Slightly faster peak random mixed IO.
+5%
SusWrite
Peak Sequential Sustained Write 60s Average 		488 MB/s 489 MB/s +0%
Value & Sentiment 
+∞%
Market Share
Based on 77,569,520 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.06 % Insanely higher market share.
+∞%
Value
Value For Money 		36.5 % 54.7 % Much better value.
+50%
User Rating
UBM User Rating 		50 % 51 % +2%
Price
Price (score) 		$470 $287 Much cheaper.
+39%
Nice To Haves 
+11%
Age
Newest 		98+ Months 45+ Months Much more recent.
+54%
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s 389 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed 		352 MB/s 364 MB/s +3%
AS-SSD Total
AS-SSD Total Score 		1,274 Pts 1,301 Pts +2%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		364 MB/s 374 MB/s +3%
ADQ Read
Avg. 4K-64Thread Read Speed 		332 MB/s 354 MB/s Slightly faster deep queue read.
+7%
ADQ Write
Avg. 4K-64Thread Write Speed 		281 MB/s 305 MB/s Slightly faster deep queue write.
+9%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		296 MB/s 324 MB/s Slightly faster deep queue mixed IO.
+9%
Specifications 
Capacity
Capacity 		4TB 4TB
Conclusion 
Average Bench 113%
Average Bench 117%

i sell child to buy good ssd [Apr '19 userbanchmark]

MORE DETAILS

There are high failure rates for the 4TB version of this drive. After moderate use the drive can develop bad sectors which block file reads. Scandisk does not detect the errors and the data blocks are not recoverable. There are widespread reports of this problem but Samsung have yet to issue a statement. [Jul '23 SSDrivePro]

MORE DETAILS

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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?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
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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 $290WD Black SN850X M.2 2TB $135
Intel Core i5-12400F $111Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $84
Intel Core i5-12600K $167Nvidia RTX 4070 $500Crucial T700 M.2 4TB $406
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