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SamsungMZ-77E4T0B
Samsung
▲ 5121 ▼

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

VS
▲ 500 ▼
  

Release date ≈ Q2 2020.

Effective Speed 
+2%
Real World Speed
Performance profile from 9,459 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
5 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 113% 183GB free
Poor: 113% Great: 124%
SPEED RANK: 200th / 1080
Effective Speed
Effective SSD Speed 		117 % 119 % +2%
Average Score 
+1%
Read
Avg. Sequential Read Speed 		481 MB/s 502 MB/s +4%
Write
Avg. Sequential Write Speed 		451 MB/s 471 MB/s +4%
4K Read
Avg. 4K Random Read Speed 		40.5 MB/s 40.6 MB/s +0%
4K Write
Avg. 4K Random Write Speed 		90 MB/s Slightly faster random write.
+10% 		82 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		426 MB/s 433 MB/s +2%
4K Mixed
Avg. 4K Random Mixed IO Speed 		53.6 MB/s +2% 52.7 MB/s
SusWrite
Avg. Sustained Write Speed 		445 MB/s 473 MB/s Slightly faster sustained write speed.
+6%
Peak Score 
+10%
Read
Peak Sequential Read Speed 		517 MB/s +2% 509 MB/s
Write
Peak Sequential Write Speed 		491 MB/s +2% 483 MB/s
4K Read
Peak 4K Random Read Speed 		48.8 MB/s Faster peak random read.
+11% 		43.8 MB/s
4K Write
Peak 4K Random Write Speed 		131 MB/s Much faster peak random write.
+32% 		98.9 MB/s
Mixed
Peak Sequential Mixed IO Speed 		464 MB/s +3% 449 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		68.1 MB/s Faster peak random mixed IO.
+22% 		56 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		489 MB/s +1% 484 MB/s
Value & Sentiment 
+2%
Market Share
Based on 76,182,007 SSDs tested
See market share leaders
User Rating
UBM User Rating 		51 % +2% 50 %
Nice To Haves 
+2%
Age
Newest 		40+ Months More recent.
+20% 		50+ Months
DQ Read
Peak 4K-64Thread Read Speed 		389 MB/s +2% 381 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		364 MB/s Slightly faster peak deep queue write.
+7% 		339 MB/s
AS-SSD Total
AS-SSD Total Score 		1,301 Pts Slightly stronger server IO.
+7% 		1,220 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		374 MB/s Slightly faster peak deep queue mixed IO.
+5% 		356 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		354 MB/s 379 MB/s Slightly faster deep queue read.
+7%
ADQ Write
Avg. 4K-64Thread Write Speed 		305 MB/s 338 MB/s Faster deep queue write.
+11%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		324 MB/s 353 MB/s Slightly faster deep queue mixed IO.
+9%
Specifications 
Capacity
Capacity 		4TB 256GB
Conclusion 
Average Bench 117%
Average Bench 119%
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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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 Frequently Asked Questions

Storage Devices FAQ
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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?
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Solid State Drives
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