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SamsungMZ-77E4T0B
Samsung
▲ 5121 ▼

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

VS
▲ 500 ▼
  

Release date ≈ Q3 2023.

Effective Speed 
+71%
Real World Speed
Performance profile from 9,456 user samples
Benchmark your SSD here
9,454 User Benchmarks
Best Bench: 137% 3.5TB free
Worst Bench: 90% 1.5TB free
Poor: 90% Great: 137%
SPEED RANK: 203rd / 1080
2 User Benchmarks
Great bench: 72% 89GB free (System drive)
Poor bench: 65% 114GB free
Poor: 65% Great: 72%
SPEED RANK: 703rd / 1080
Effective Speed
Effective SSD Speed 		117 % Much faster effective speed.
+71% 		68.3 %
Average Score 
+82%
Read
Avg. Sequential Read Speed 		481 MB/s Much faster read speed.
+77% 		272 MB/s
Write
Avg. Sequential Write Speed 		451 MB/s Slightly faster write speed.
+10% 		410 MB/s
4K Read
Avg. 4K Random Read Speed 		40.5 MB/s Much faster random read.
+63% 		24.8 MB/s
4K Write
Avg. 4K Random Write Speed 		90 MB/s Much faster random write.
+33% 		67.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		426 MB/s Much faster mixed IO speed.
+59% 		268 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		53.6 MB/s Hugely faster random mixed IO.
+309% 		13.1 MB/s
SusWrite
Avg. Sustained Write Speed 		445 MB/s Faster sustained write speed.
+20% 		372 MB/s
Peak Score 
+91%
Read
Peak Sequential Read Speed 		517 MB/s Faster peak read speed.
+20% 		430 MB/s
Write
Peak Sequential Write Speed 		491 MB/s Faster peak write speed.
+15% 		426 MB/s
4K Read
Peak 4K Random Read Speed 		48.8 MB/s Hugely faster peak random read.
+85% 		26.4 MB/s
4K Write
Peak 4K Random Write Speed 		131 MB/s Much faster peak random write.
+65% 		79.2 MB/s
Mixed
Peak Sequential Mixed IO Speed 		464 MB/s Faster peak mixed IO speed.
+27% 		364 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		68.1 MB/s Hugely faster peak random mixed IO.
+404% 		13.5 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		489 MB/s Faster peak sustained write speed.
+20% 		409 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,544,128 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.05 % Insanely higher market share.
+∞% 		0 %
User Rating
UBM User Rating 		51 % +2% 50 %
Nice To Haves 
+505%
Age
Newest 		45+ Months 14+ Months Much more recent.
+69%
DQ Read
Peak 4K-64Thread Read Speed 		389 MB/s Hugely faster peak deep queue read.
+172% 		143 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		364 MB/s Much faster peak deep queue write.
+36% 		268 MB/s
AS-SSD Total
AS-SSD Total Score 		1,301 Pts Hugely stronger server IO.
+80% 		721 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		374 MB/s Insanely faster peak deep queue mixed IO.
+1,944% 		18.3 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		354 MB/s Hugely faster deep queue read.
+181% 		126 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		305 MB/s Faster deep queue write.
+16% 		264 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		324 MB/s Insanely faster deep queue mixed IO.
+1,680% 		18.2 MB/s
Specifications 
Capacity
Capacity 		4TB 128GB
Conclusion 
Average Bench 117%
Average Bench 68.3%

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]

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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
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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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What is sequential write speed?
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Solid State Drives
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What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
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The Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $280WD Black SN850X M.2 2TB $135
Intel Core i5-12600K $159Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $84
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $370
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