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SamsungMZ-77E4T0B
Jmicron
▲ 5121 ▼

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

VS
▲ 500 ▼
  

Release date ≈ Q4 2017.

Effective Speed 
+1,165%
Real World Speed
Performance profile from 9,458 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
4 User Benchmarks
Best Bench: 12% 219GB free
Worst Bench: 6% 31GB free
Poor: 6% Great: 12%
SPEED RANK: 1077th / 1080
Effective Speed
Effective SSD Speed 		117 % Insanely faster effective speed.
+1,165% 		9.21 %
Average Score 
+2,684%
Read
Avg. Sequential Read Speed 		481 MB/s Hugely faster read speed.
+482% 		82.6 MB/s
Write
Avg. Sequential Write Speed 		451 MB/s Hugely faster write speed.
+279% 		119 MB/s
4K Read
Avg. 4K Random Read Speed 		40.5 MB/s Insanely faster random read.
+7,132% 		0.56 MB/s
4K Write
Avg. 4K Random Write Speed 		90 MB/s Hugely faster random write.
+782% 		10.2 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		426 MB/s Hugely faster mixed IO speed.
+445% 		78.1 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		53.6 MB/s Insanely faster random mixed IO.
+8,687% 		0.61 MB/s
SusWrite
Avg. Sustained Write Speed 		445 MB/s Hugely faster sustained write speed.
+983% 		41.1 MB/s
Peak Score 
+2,643%
Read
Peak Sequential Read Speed 		517 MB/s Hugely faster peak read speed.
+379% 		108 MB/s
Write
Peak Sequential Write Speed 		491 MB/s Hugely faster peak write speed.
+211% 		158 MB/s
4K Read
Peak 4K Random Read Speed 		48.8 MB/s Insanely faster peak random read.
+8,033% 		0.6 MB/s
4K Write
Peak 4K Random Write Speed 		131 MB/s Insanely faster peak random write.
+1,124% 		10.7 MB/s
Mixed
Peak Sequential Mixed IO Speed 		464 MB/s Hugely faster peak mixed IO speed.
+462% 		82.5 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		68.1 MB/s Insanely faster peak random mixed IO.
+7,467% 		0.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		489 MB/s Hugely faster peak sustained write speed.
+826% 		52.8 MB/s
Value & Sentiment 
+2%
Market Share
Based on 77,543,110 SSDs tested
See market share leaders
User Rating
UBM User Rating 		51 % +2% 50 %
Nice To Haves 
+22,976%
Age
Newest 		45+ Months Much more recent.
+46% 		84+ Months
DQ Read
Peak 4K-64Thread Read Speed 		389 MB/s Insanely faster peak deep queue read.
+35,588% 		1.09 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		364 MB/s Insanely faster peak deep queue write.
+2,933% 		12 MB/s
AS-SSD Total
AS-SSD Total Score 		1,301 Pts Insanely stronger server IO.
+2,068% 		60 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		374 MB/s Insanely faster peak deep queue mixed IO.
+37,300% 		1 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		354 MB/s Insanely faster deep queue read.
+64,264% 		0.55 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		305 MB/s Insanely faster deep queue write.
+2,673% 		11 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		324 MB/s Insanely faster deep queue mixed IO.
+38,936% 		0.83 MB/s
Specifications 
Capacity
Capacity 		4TB 8TB
Conclusion 
Average Bench 117%
Average Bench 9.21%

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

User Builds 
9,454
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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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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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  • - 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?
What is queue depth?
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?
How is the AS SSD write score calculated?
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ALL FAQs »

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The Best
CPUGPUSSD
Intel Core i5-12600K $159Nvidia RTX 4060 $280WD Black SN850X M.2 2TB $135
Intel Core i5-13600K $210Nvidia 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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