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WDWD20PURX
SeagateST500DM002
▲ 52830 ▼

Release date: Q3 2014.

VS
Effective Speed 
+13%
Real World Speed
Performance profile from 593,470 user samples
Benchmark your HDD here
19,126 User Benchmarks
Best Bench: 86% 2TB free
Worst Bench: 39% 122GB free
Poor: 39% Great: 86%
SPEED RANK: 153rd / 1015
574,344 User Benchmarks
Best Bench: 88% 752GB free
Worst Bench: 27% 323GB free (System drive)
Poor: 27% Great: 88%
SPEED RANK: 203rd / 1015
Effective Speed
Effective HDD Speed 		66.2 % Faster effective speed.
+13% 		58.4 %
Average Score 
+26%
Read
Avg. Sequential Read Speed 		116 MB/s Faster read speed.
+12% 		104 MB/s
Write
Avg. Sequential Write Speed 		115 MB/s Faster write speed.
+16% 		99.3 MB/s
4K Read
Avg. 4K Random Read Speed 		0.74 MB/s Faster random read.
+17% 		0.63 MB/s
4K Write
Avg. 4K Random Write Speed 		2.25 MB/s Hugely faster random write.
+86% 		1.21 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		62.2 MB/s Faster mixed IO speed.
+10% 		56.3 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		0.89 MB/s Faster random mixed IO.
+24% 		0.72 MB/s
SusWrite
Avg. Sustained Write Speed 		115 MB/s Faster sustained write speed.
+16% 		99.2 MB/s
Peak Score 
+14%
Read
Peak Sequential Read Speed 		152 MB/s 164 MB/s Slightly faster peak read speed.
+8%
Write
Peak Sequential Write Speed 		148 MB/s Faster peak write speed.
+12% 		132 MB/s
4K Read
Peak 4K Random Read Speed 		0.9 MB/s Faster peak random read.
+29% 		0.7 MB/s
4K Write
Peak 4K Random Write Speed 		2.7 MB/s Much faster peak random write.
+42% 		1.9 MB/s
Mixed
Peak Sequential Mixed IO Speed 		79 MB/s Slightly faster peak mixed IO speed.
+10% 		72.1 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		1 MB/s Faster peak random mixed IO.
+11% 		0.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		151 MB/s +3% 146 MB/s
Value & Sentiment 
+305%
Market Share
Based on 53,961,531 HDDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.15 % 1.85 % Insanely higher market share.
+1,133%
Value
Value For Money 		39.5 % 41.7 % Slightly better value.
+6%
User Rating
UBM User Rating 		52 % 52 %
Price
Price (score) 		$67 $14 Much cheaper.
+79%
Nice To Haves 
+5%
Age
Newest 		124 Months Slightly more recent.
+5% 		131+ Months
Specifications 
Capacity
Capacity 		2TB 500GB
Conclusion 
Average Bench 66.2%
Average Bench 58.4%

The WD Purple is a surveillance drive with low power consumption and a design that's optimized for 24x7 operation. There is actually little beyond marketing that separates the Purple from the Red and Green drives. They all share almost identical hardware. The thing that does differentiate the Purple drives is their firmware which supports AllFrame, a surveillance specific feature. Allframe handles the cache in a way that is optimized for video streams. The AllFrame technology however is only enabled when used in conjunction with a supported host controller, most of which are only found in dedicated NVR (Network Video Recording) devices. As a result there is no benefit in using this drive in a HTPC to record video streams, because the surveillance specific functions won't be enabled. In terms of effective speed the Purple lags the new Red and Green drives by around 26%. [Oct '14 HDrivePro]

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IS GOOD!! [Jun '19 msijonne]

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