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WDWDS250G1B0E
SamsungMZ-77E4T0B
▲ 500 ▼

Release date ≈ Q3 2021.

VS
▲ 5121 ▼

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

Effective Speed 
+53%
Real World Speed
Performance profile from 10,602 user samples
Benchmark your SSD here
1,148 User Benchmarks
Great bench: 236% 231GB free
Poor bench: 108% 9GB free (System drive)
Poor: 108% Great: 236%
SPEED RANK: 132nd / 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 		178 % Much faster effective speed.
+53% 		117 %
Average Score 
+63%
Read
Avg. Sequential Read Speed 		1093 MB/s Hugely faster read speed.
+127% 		481 MB/s
Write
Avg. Sequential Write Speed 		740 MB/s Much faster write speed.
+64% 		451 MB/s
4K Read
Avg. 4K Random Read Speed 		49.4 MB/s Faster random read.
+22% 		40.5 MB/s
4K Write
Avg. 4K Random Write Speed 		163 MB/s Hugely faster random write.
+81% 		90 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		895 MB/s Hugely faster mixed IO speed.
+110% 		426 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		59.5 MB/s Faster random mixed IO.
+11% 		53.6 MB/s
SusWrite
Avg. Sustained Write Speed 		543 MB/s Faster sustained write speed.
+22% 		445 MB/s
Peak Score 
+93%
Read
Peak Sequential Read Speed 		1346 MB/s Hugely faster peak read speed.
+160% 		517 MB/s
Write
Peak Sequential Write Speed 		969 MB/s Hugely faster peak write speed.
+97% 		491 MB/s
4K Read
Peak 4K Random Read Speed 		57.2 MB/s Faster peak random read.
+17% 		48.8 MB/s
4K Write
Peak 4K Random Write Speed 		288 MB/s Hugely faster peak random write.
+120% 		131 MB/s
Mixed
Peak Sequential Mixed IO Speed 		1132 MB/s Hugely faster peak mixed IO speed.
+144% 		464 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		85.4 MB/s Faster peak random mixed IO.
+25% 		68.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		904 MB/s Hugely faster peak sustained write speed.
+85% 		489 MB/s
Value & Sentiment 
+38%
Market Share
Based on 77,424,796 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.03 % Hugely higher market share.
+200%
Value
Value For Money 		39.4 % 53 % Much better value.
+35%
User Rating
UBM User Rating 		50 % 51 % +2%
Price
Price (score) 		$49 Hugely cheaper.
+84% 		$299
Nice To Haves 
+94%
Age
Newest 		37+ Months More recent.
+16% 		44+ Months
DQ Read
Peak 4K-64Thread Read Speed 		757 MB/s Hugely faster peak deep queue read.
+95% 		389 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		969 MB/s Hugely faster peak deep queue write.
+166% 		364 MB/s
AS-SSD Total
AS-SSD Total Score 		2,787 Pts Hugely stronger server IO.
+114% 		1,301 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		680 MB/s Hugely faster peak deep queue mixed IO.
+82% 		374 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		692 MB/s Hugely faster deep queue read.
+95% 		354 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		634 MB/s Hugely faster deep queue write.
+108% 		305 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		561 MB/s Much faster deep queue mixed IO.
+73% 		324 MB/s
Specifications 
Capacity
Capacity 		250GB 4TB
Conclusion 
Average Bench 178%
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]

MORE DETAILS

User Builds 
1,148
9,454
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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.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

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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How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware

 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?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

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Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
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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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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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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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