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WDWD4001FAEX
SeagateST250DM000
▲ 52398 ▼

Release date: Q4 2012.

VS
▲ 507 ▼

Release date ≤ Q1 2014.

Effective Speed 
+36%
Real World Speed
Performance profile from 36,604 user samples
Benchmark your HDD here
4,113 User Benchmarks
Best Bench: 93% 3TB free
Worst Bench: 49% 3.5TB free
Poor: 49% Great: 93%
SPEED RANK: 111th / 1015
32,491 User Benchmarks
Best Bench: 74% 194GB free
Worst Bench: 18% 17GB free (System drive)
Poor: 18% Great: 74%
SPEED RANK: 254th / 1015
Effective Speed
Effective HDD Speed 		74.1 % Much faster effective speed.
+36% 		54.3 %
Average Score 
+57%
Read
Avg. Sequential Read Speed 		132 MB/s Much faster read speed.
+36% 		97.3 MB/s
Write
Avg. Sequential Write Speed 		124 MB/s Much faster write speed.
+31% 		94.6 MB/s
4K Read
Avg. 4K Random Read Speed 		0.78 MB/s Faster random read.
+30% 		0.6 MB/s
4K Write
Avg. 4K Random Write Speed 		3.16 MB/s Hugely faster random write.
+172% 		1.16 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		86.1 MB/s Much faster mixed IO speed.
+62% 		53.2 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		0.96 MB/s Much faster random mixed IO.
+35% 		0.71 MB/s
SusWrite
Avg. Sustained Write Speed 		125 MB/s Much faster sustained write speed.
+36% 		92 MB/s
Peak Score 
+45%
Read
Peak Sequential Read Speed 		169 MB/s Much faster peak read speed.
+31% 		129 MB/s
Write
Peak Sequential Write Speed 		155 MB/s Faster peak write speed.
+20% 		129 MB/s
4K Read
Peak 4K Random Read Speed 		1 MB/s Much faster peak random read.
+43% 		0.7 MB/s
4K Write
Peak 4K Random Write Speed 		3.7 MB/s Hugely faster peak random write.
+118% 		1.7 MB/s
Mixed
Peak Sequential Mixed IO Speed 		108 MB/s Much faster peak mixed IO speed.
+63% 		66.2 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		1.1 MB/s Faster peak random mixed IO.
+22% 		0.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		159 MB/s Faster peak sustained write speed.
+20% 		133 MB/s
Value & Sentiment 
+297%
Market Share
Based on 53,961,593 HDDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.13 % Insanely higher market share.
+1,200%
Value
Value For Money 		22.9 % Hugely better value.
+98% 		11.6 %
User Rating
UBM User Rating 		52 % +4% 50 %
Price
Price (score) 		$259 $23 Hugely cheaper.
+91%
Nice To Haves 
+10%
Age
Newest 		144 Months 130+ Months Slightly more recent.
+10%
Specifications 
Capacity
Capacity 		4TB 250GB
Conclusion 
Average Bench 74.1%
Average Bench 54.3%

I don't understand the pricing on this drive, on the face of it, it looks seriously overpriced. Although the Black has a marginal speed advantage compared to a 3TB Barracuda, one 4TB Caviar Black costs more than two 3TB Barracudas! I have only seen benchmarks from 3 user samples for the 4TB 2012 Black so I will re-visit this recap over the coming months by which time I should have a better sample size. Additional samples may indicate far better performance than I have seen so far. [Aug '13 HDrivePro]

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cheap old stuff [Nov '20 kuroiikaze]

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We calculate effective speed which measures performance for typical consumers. Effective speed is adjusted by current cost per GB to yield value for money. 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 HDDs. [HDrivePro]

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