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SamsungMZ-77E4T0B
▲ 500 ▼
  

Release date ≈ Q2 2021.

VS
▲ 5121 ▼

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

Effective Speed 
+298%
Real World Speed
Performance profile from 9,461 user samples
Benchmark your SSD here
7 User Benchmarks
Best Bench: 31% 965GB free
Worst Bench: 23% 721GB free
Poor: 23% Great: 31%
SPEED RANK: 1027th / 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 		29.3 % 117 % Hugely faster effective speed.
+298%
Average Score 
+857%
Read
Avg. Sequential Read Speed 		194 MB/s 481 MB/s Hugely faster read speed.
+148%
Write
Avg. Sequential Write Speed 		176 MB/s 451 MB/s Hugely faster write speed.
+156%
4K Read
Avg. 4K Random Read Speed 		21.4 MB/s 40.5 MB/s Hugely faster random read.
+89%
4K Write
Avg. 4K Random Write Speed 		10.8 MB/s 90 MB/s Hugely faster random write.
+733%
Mixed
Avg. Sequential Mixed IO Speed 		95.2 MB/s 426 MB/s Hugely faster mixed IO speed.
+347%
4K Mixed
Avg. 4K Random Mixed IO Speed 		1.2 MB/s 53.6 MB/s Insanely faster random mixed IO.
+4,367%
SusWrite
Avg. Sustained Write Speed 		172 MB/s 445 MB/s Hugely faster sustained write speed.
+159%
Peak Score 
+1,011%
Read
Peak Sequential Read Speed 		224 MB/s 517 MB/s Hugely faster peak read speed.
+131%
Write
Peak Sequential Write Speed 		186 MB/s 491 MB/s Hugely faster peak write speed.
+164%
4K Read
Peak 4K Random Read Speed 		25.2 MB/s 48.8 MB/s Hugely faster peak random read.
+94%
4K Write
Peak 4K Random Write Speed 		11.3 MB/s 131 MB/s Insanely faster peak random write.
+1,059%
Mixed
Peak Sequential Mixed IO Speed 		110 MB/s 464 MB/s Hugely faster peak mixed IO speed.
+322%
4K Mixed
Peak 4K Random Mixed IO Speed 		1.3 MB/s 68.1 MB/s Insanely faster peak random mixed IO.
+5,138%
SusWrite
Peak Sequential Sustained Write 60s Average 		183 MB/s 489 MB/s Hugely faster peak sustained write speed.
+167%
Value & Sentiment 
+2%
Market Share
Based on 77,541,848 SSDs tested
See market share leaders
User Rating
UBM User Rating 		50 % 51 % +2%
Nice To Haves 
+12,013%
Age
Newest 		40+ Months More recent.
+11% 		45+ Months
DQ Read
Peak 4K-64Thread Read Speed 		1.6 MB/s 389 MB/s Insanely faster peak deep queue read.
+24,212%
DQ Write
Peak 4K-64Thread Write Speed 		13.1 MB/s 364 MB/s Insanely faster peak deep queue write.
+2,679%
AS-SSD Total
AS-SSD Total Score 		128 Pts 1,301 Pts Hugely stronger server IO.
+921%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		1.9 MB/s 374 MB/s Insanely faster peak deep queue mixed IO.
+19,584%
ADQ Read
Avg. 4K-64Thread Read Speed 		1.43 MB/s 354 MB/s Insanely faster deep queue read.
+24,655%
ADQ Write
Avg. 4K-64Thread Write Speed 		12.1 MB/s 305 MB/s Insanely faster deep queue write.
+2,421%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		1.49 MB/s 324 MB/s Insanely faster deep queue mixed IO.
+21,645%
Specifications 
Capacity
Capacity 		2TB 4TB
Conclusion 
Average Bench 29.3%
Average Bench 117%

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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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.
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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?
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The Best
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Intel Core i5-12600K $159Nvidia RTX 4060 $280WD Black SN850X M.2 2TB $135
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Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $370
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