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SamsungMZ-77E4T0B
▲ 5121 ▼

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

VS
▲ 500 ▼
  

Release date ≈ Q4 2017.

Effective Speed 
+7%
Real World Speed
Performance profile from 9,470 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
16 User Benchmarks
Best Bench: 240% 199GB free (System drive)
Worst Bench: 50% 156GB free (System drive)
Poor: 50% Great: 240%
SPEED RANK: 194th / 1080
Effective Speed
Effective SSD Speed 		117 % 124 % Slightly faster effective speed.
+7%
Average Score 
+3%
Read
Avg. Sequential Read Speed 		481 MB/s 902 MB/s Hugely faster read speed.
+88%
Write
Avg. Sequential Write Speed 		451 MB/s 562 MB/s Faster write speed.
+25%
4K Read
Avg. 4K Random Read Speed 		40.5 MB/s Much faster random read.
+50% 		27 MB/s
4K Write
Avg. 4K Random Write Speed 		90 MB/s Much faster random write.
+32% 		68.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		426 MB/s 508 MB/s Faster mixed IO speed.
+19%
4K Mixed
Avg. 4K Random Mixed IO Speed 		53.6 MB/s Much faster random mixed IO.
+76% 		30.5 MB/s
SusWrite
Avg. Sustained Write Speed 		445 MB/s 453 MB/s +2%
Peak Score 
+111%
Read
Peak Sequential Read Speed 		517 MB/s 2,461 MB/s Hugely faster peak read speed.
+376%
Write
Peak Sequential Write Speed 		491 MB/s 1,382 MB/s Hugely faster peak write speed.
+181%
4K Read
Peak 4K Random Read Speed 		48.8 MB/s Much faster peak random read.
+42% 		34.3 MB/s
4K Write
Peak 4K Random Write Speed 		131 MB/s Faster peak random write.
+18% 		111 MB/s
Mixed
Peak Sequential Mixed IO Speed 		464 MB/s 1,503 MB/s Hugely faster peak mixed IO speed.
+224%
4K Mixed
Peak 4K Random Mixed IO Speed 		68.1 MB/s Much faster peak random mixed IO.
+55% 		43.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		489 MB/s 1,032 MB/s Hugely faster peak sustained write speed.
+111%
Value & Sentiment 
+∞%
Market Share
Based on 77,542,622 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.06 % Insanely higher market share.
+∞% 		0 %
User Rating
UBM User Rating 		51 % +2% 50 %
Nice To Haves 
+49%
Age
Newest 		45+ Months Much more recent.
+47% 		85+ Months
DQ Read
Peak 4K-64Thread Read Speed 		389 MB/s 894 MB/s Hugely faster peak deep queue read.
+130%
DQ Write
Peak 4K-64Thread Write Speed 		364 MB/s 762 MB/s Hugely faster peak deep queue write.
+109%
AS-SSD Total
AS-SSD Total Score 		1,301 Pts 2,736 Pts Hugely stronger server IO.
+110%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		374 MB/s 605 MB/s Much faster peak deep queue mixed IO.
+62%
ADQ Read
Avg. 4K-64Thread Read Speed 		354 MB/s 456 MB/s Faster deep queue read.
+29%
ADQ Write
Avg. 4K-64Thread Write Speed 		305 MB/s 362 MB/s Faster deep queue write.
+19%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		324 MB/s Faster deep queue mixed IO.
+19% 		273 MB/s
Specifications 
Capacity
Capacity 		4TB 512GB
Conclusion 
Average Bench 117%
Average Bench 124%

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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User Builds 
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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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Storage Devices FAQ
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Solid State Drives
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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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