Western Digital’s HDD series currently has six colors: Blue, Green, Red, Purple, Black, and Gold. At first glance, all of these colors could be confusing. That’s why we have created this article to explain you the difference.

All of these HDDs are made for different purposes, so it’s important to choose the best fit for your needs. Imagine footwear – you can walk with both sandals and winter boots, that’s true. But it may be wiser and more efficient to use sandals when you’re in beach and boots when there is snow. The same thing goes with HDDs.

Of course, you can use what ever hard drive you want on your computer and it will run fine. For example, WD gold as your primary drive. However, this would be an overkill as you probably wouldn’t use its full potential, just spend some extra cash. Getting WD Black or Blue instead would be much wiser. Therefore, spend a minute or two and research which hard drive is the best choice for you.

WD Blue


WD Blue offers reliability and performance for everyday users. Blues are great all-rounders made for general use. Price on these things is also great making them a good deal. You can get a WD blue with capacities ranging from 250 GB to 6 TB. RPMs vary – there are models with 5400 RPM and 7200 RPM.

WD Blue is a good drive for storing anything you need, whether it’s gaming or just some music and pictures. It also sits in the sweet spot of performance and price, making it great. If you can’t decide which Hard Drive to get, just buy WD Blue, you can’t go wrong with this.

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WD Green

We won’t get too detailed with WD Green as WD Blue has taken Greens place. Everyone chooses WD Blue instead of green. WD Green is slightly more power efficient than WD Blue. However, this difference is hardly noticeable. WD Green also lacks some performance compared with WD Blue. It’s just not worth it. Get Blue instead.

Nowadays Western Digital has stopped manufacturing WD Green hard drives. And now under the name “WD Green” they manufacture SATA and M.2 SSDs.[amazon_link asins=’B06XR3DDCB,B00DXOJJQQ,B00165RLL4′ template=’MyCopyOf-ProductGrid’ store=’ishddmag-20′ marketplace=’US’ link_id=’e08093b7-7350-11e7-8d5c-319e67a1c0d8′]

WD Black


For Max performance, WD Black is the best choice. These drives feature a storage capacity ranging from 1TB to 6TB. These HDDs are great for gamers and workstation PCs as they offer performance and reliability.

WD Black 6TB has a 128MB cache, which is way more than Blue series 64MB. All WD Black versions come with standard RPM of 7200rpm and have a 5-year warranty. However, because of higher performance, these drives may heat up a bit more than other series and are a bit louder. To make it simple, WD Black is a performance drive.

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WD Red AND Red Pro


The WD Red is built to be slotted inside a NAS (Network Assisted Storage). WD Red is compatible all most popular NAS systems. Others members of WD family can’t do this. WD Red capacity ranges from a minimum of 750 GB capacity model up to the 8 TB version. RAID configuration is also supported.

One thing that you should know – Red family excels more into the read performance than write. That’s only normal for NAS Hard drive. All data is stored through a network, so multiple users connect at the same time and read some data.

Note: There are two versions of WD RED – Pro and standard.

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WD Purple


One word that characterizes WD Purple family the best is “surveillance.” This means that WD Purple is capable of withstanding operation of 24/7. Mostly these drives will be used for storing and recording videos. For example, in security systems.

If WD Red excels at read speed, then the Purple does exactly opposite – it has high write speeds. These drives feature a technology called AllFrame that minimizes errors in saving videos. You can get the WD Purple in a wide range of capacities starting from 500 GB up to 8 TB.

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WD Gold


WD Gold are made for Data centers, to do enterprise solutions. These are the top shelf hard drives. They are most sophisticated WD products. WD Gold can handle 550 TB per year of data and 2 million hours Mean Time Between Failures. The drive also features things like StableTrac, Multi-axis shock sensor, Dynamic fly height technology. They are the most expensive and up to date WD HDDs you can get. Same as WD Black, Gold comes with a 5-year warranty.

These hard drives will do great if used on servers because that’s what they are made for.

Also, check out our detailed review about the king of WD Gold 10TB Enterprise.

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Summing everything up

Whether you need extra performance, reliability or capacity WD can provide you with everything to get your job done. Surveillance, gaming, network-assisted storage you name it! And you can figure out exactly what you need with clever color coding.

WD Blue HDDs are mainly used for general purpose storage, they are great all-rounders, and an average user can’t go wrong with Blue.

WD Green is basically same as Blue, but it lacks a bit of performance. However, it is the most eco-friendly HDD, and it’s quite cheap.

WD Blacks are for pure performance including gaming, media, and content creation. Also one of the most expensive HDDs.

WD Red is a NAS drive. It’s optimized for NAS systems.

WD Purple is for surveillance. Advised for 24/7 operation.

WD Gold, probably the most premium of all. Made for a multitude of Datacenter-specific applications.


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