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SamsungMZ-77E4T0B
▲ 500 ▼
  

Release date ≈ Q4 2019.

VS
▲ 5121 ▼

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

Effective Speed 
+111%
Real World Speed
Performance profile from 9,965 user samples
Benchmark your SSD here
511 User Benchmarks
Best Bench: 282% 466GB free
Worst Bench: 178% 331GB free
Poor: 178% Great: 282%
SPEED RANK: 66th / 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 		246 % Hugely faster effective speed.
+111% 		117 %
Average Score 
+157%
Read
Avg. Sequential Read Speed 		1,912 MB/s Hugely faster read speed.
+298% 		481 MB/s
Write
Avg. Sequential Write Speed 		1,954 MB/s Hugely faster write speed.
+333% 		451 MB/s
4K Read
Avg. 4K Random Read Speed 		45.8 MB/s Faster random read.
+13% 		40.5 MB/s
4K Write
Avg. 4K Random Write Speed 		154 MB/s Much faster random write.
+71% 		90 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		1,593 MB/s Hugely faster mixed IO speed.
+274% 		426 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		67.4 MB/s Faster random mixed IO.
+26% 		53.6 MB/s
SusWrite
Avg. Sustained Write Speed 		823 MB/s Hugely faster sustained write speed.
+85% 		445 MB/s
Peak Score 
+156%
Read
Peak Sequential Read Speed 		2,034 MB/s Hugely faster peak read speed.
+293% 		517 MB/s
Write
Peak Sequential Write Speed 		2,243 MB/s Hugely faster peak write speed.
+357% 		491 MB/s
4K Read
Peak 4K Random Read Speed 		51.5 MB/s Slightly faster peak random read.
+6% 		48.8 MB/s
4K Write
Peak 4K Random Write Speed 		211 MB/s Much faster peak random write.
+61% 		131 MB/s
Mixed
Peak Sequential Mixed IO Speed 		1,737 MB/s Hugely faster peak mixed IO speed.
+274% 		464 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		79.2 MB/s Faster peak random mixed IO.
+16% 		68.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		912 MB/s Hugely faster peak sustained write speed.
+87% 		489 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,548,516 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.06 % Insanely higher market share.
+∞%
User Rating
UBM User Rating 		50 % 51 % +2%
Nice To Haves 
+204%
Age
Newest 		59+ Months 45+ Months More recent.
+24%
DQ Read
Peak 4K-64Thread Read Speed 		1,568 MB/s Hugely faster peak deep queue read.
+303% 		389 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		1,223 MB/s Hugely faster peak deep queue write.
+236% 		364 MB/s
AS-SSD Total
AS-SSD Total Score 		4,429 Pts Hugely stronger server IO.
+240% 		1,301 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		1,348 MB/s Hugely faster peak deep queue mixed IO.
+260% 		374 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		1,197 MB/s Hugely faster deep queue read.
+238% 		354 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		860 MB/s Hugely faster deep queue write.
+182% 		305 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		967 MB/s Hugely faster deep queue mixed IO.
+198% 		324 MB/s
Specifications 
Capacity
Capacity 		500GB 4TB
Conclusion 
Average Bench 246%
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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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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  • - CPU tests include: integer, floating and string
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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 i5-13600K $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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