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SamsungMZ-77E4T0B
▲ 500 ▼
  

Release date ≈ Q4 2018.

VS
▲ 5121 ▼

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

Effective Speed 
+110%
Real World Speed
Performance profile from 9,464 user samples
Benchmark your SSD here
10 User Benchmarks
Best Bench: 62% 16GB free (System drive)
Worst Bench: 34% 12GB free (System drive)
Poor: 34% Great: 62%
SPEED RANK: 853rd / 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 		55.6 % 117 % Hugely faster effective speed.
+110%
Average Score 
+124%
Read
Avg. Sequential Read Speed 		371 MB/s 481 MB/s Faster read speed.
+30%
Write
Avg. Sequential Write Speed 		229 MB/s 451 MB/s Hugely faster write speed.
+97%
4K Read
Avg. 4K Random Read Speed 		23.9 MB/s 40.5 MB/s Much faster random read.
+69%
4K Write
Avg. 4K Random Write Speed 		74.9 MB/s 90 MB/s Faster random write.
+20%
Mixed
Avg. Sequential Mixed IO Speed 		237 MB/s 426 MB/s Much faster mixed IO speed.
+80%
4K Mixed
Avg. 4K Random Mixed IO Speed 		14.8 MB/s 53.6 MB/s Hugely faster random mixed IO.
+262%
SusWrite
Avg. Sustained Write Speed 		108 MB/s 445 MB/s Hugely faster sustained write speed.
+312%
Peak Score 
+122%
Read
Peak Sequential Read Speed 		397 MB/s 517 MB/s Much faster peak read speed.
+30%
Write
Peak Sequential Write Speed 		283 MB/s 491 MB/s Much faster peak write speed.
+73%
4K Read
Peak 4K Random Read Speed 		28.6 MB/s 48.8 MB/s Much faster peak random read.
+71%
4K Write
Peak 4K Random Write Speed 		92.7 MB/s 131 MB/s Much faster peak random write.
+41%
Mixed
Peak Sequential Mixed IO Speed 		266 MB/s 464 MB/s Much faster peak mixed IO speed.
+74%
4K Mixed
Peak 4K Random Mixed IO Speed 		17.9 MB/s 68.1 MB/s Hugely faster peak random mixed IO.
+280%
SusWrite
Peak Sequential Sustained Write 60s Average 		127 MB/s 489 MB/s Hugely faster peak sustained write speed.
+285%
Value & Sentiment 
+2%
Market Share
Based on 77,428,112 SSDs tested
See market share leaders
User Rating
UBM User Rating 		50 % 51 % +2%
Nice To Haves 
+183%
Age
Newest 		72+ Months 44+ Months Much more recent.
+39%
DQ Read
Peak 4K-64Thread Read Speed 		112 MB/s 389 MB/s Hugely faster peak deep queue read.
+247%
DQ Write
Peak 4K-64Thread Write Speed 		296 MB/s 364 MB/s Faster peak deep queue write.
+23%
AS-SSD Total
AS-SSD Total Score 		696 Pts 1,301 Pts Hugely stronger server IO.
+87%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		109 MB/s 374 MB/s Hugely faster peak deep queue mixed IO.
+243%
ADQ Read
Avg. 4K-64Thread Read Speed 		73.4 MB/s 354 MB/s Hugely faster deep queue read.
+382%
ADQ Write
Avg. 4K-64Thread Write Speed 		226 MB/s 305 MB/s Much faster deep queue write.
+35%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		64.2 MB/s 324 MB/s Hugely faster deep queue mixed IO.
+405%
Specifications 
Capacity
Capacity 		60GB 4TB
Conclusion 
Average Bench 55.6%
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.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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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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 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
CPUGPUSSD
Intel Core i5-12600K $169Nvidia RTX 4060 $295WD Black SN850X M.2 2TB $135
Intel Core i5-12400F $111Nvidia RTX 4060-Ti $345WD Black SN850X M.2 1TB $80
Intel Core i5-13600K $225Nvidia RTX 4070 $500Crucial T700 M.2 4TB $350
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