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Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD40EZAZ

4.6 4.6 out of 5 stars 53,959 ratings
4TB
Previous Generation

About this item

  • Reliable everyday computing
  • Western Digital quality and reliability
  • Free Acronis True Image WD Edition cloning software
  • Massive capacity up to 6TB
Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

From the manufacturer

Western Digital Reliable Everyday Computing. Two content creators editing a photo on a desktop.
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Purpose-built for Productivity

The WD Blue internal hard drive delivers dependable performance for your everyday office and web applications. Designed for use as a primary storage drive in desktop PCs, select the ideal capacity for your PC.

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No Touch Ramp Load Technology

Our no-touch ramp load technology provides safer drive protection when you carry the drive from one location to another, ensuring less wear to the recording head and media.

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Confidence in Compatibility

We’ve tested for this device’s compatibility with hundreds of systems and platforms in our FIT Lab to ensure confidence in compatibility.

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Upgrade Your Drive with One Step

Copy all of your valuable content to your new WD drive without losing a file with the Acronis True Image software, available for free on the Western Digital Support site.

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Powerful Performance, Low Power Consumption

State-of-the-art seeking algorithms and advanced power management features help maintain low power consumption.

Explore WD HDDs

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WD Blue PC HDD

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WD_BLACK PC HDD

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WD Red HDD

WD Red Plus

WD Red Plus HDD

Capacity
Avail up to 8TB Avail up to 10TB Avail up to 6TB Avail up to 14TB
Interface
SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s
Form Factor
3.5 inches 3.5 inches 3.5 inches 3.5 inches
RPM
Up to 7200 Up to 7200 Up to 5400 Up to 5400
Cache Memory
Up to 256MB Up to 64MB Up to 64MB Up to 64MB

What's in the box

  • HDD

    • Product Description

    WD Blue internal hard drives deliver reliability for office and web applications. They are ideal for use as primary drives in desktop PCs and for office applications. With a range of capacities and cache sizes, there’s a WD Blue internal hard drive that’s just right for you.

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    Product information

    Technical Details

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    Other Technical Details

    Additional Information

    Warranty & Support

    Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

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    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    53,959 global ratings
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    Top reviews from the United States

    AJ
    4.0 out of 5 stars Nice storage drives!
    Reviewed in the United States on June 23, 2023
    Capacity: 8TBStyle: Newest GenerationVerified Purchase
    One person found this helpful
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    Jason M
    VINE VOICE
    5.0 out of 5 stars A good basic drive from a respected brand.
    Reviewed in the United States on July 12, 2023
    Capacity: 1TBStyle: Newest GenerationVerified Purchase
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    m6502
    5.0 out of 5 stars Good, practical desktop drive
    Reviewed in the United States on October 27, 2014
    Capacity: 1TBStyle: Newest GenerationVerified Purchase
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    m6502
    5.0 out of 5 stars Good, practical desktop drive
    Reviewed in the United States on October 27, 2014
    I gave this drive to someone as a gift, and they've been using it for backups for 10 months without issue.
    My review is based on another unit of this drive which I bought for myself some months later. I've been using it as my primary desktop OS/programs drive since 5/29/2014, so it's about 5 months now. There have been no problems thus far. It's really quite a bargain for desktop use if 1TB is all you need.
    The actual capacity of this drive is 931.5GB. That's an old marketing trick which can be blamed for the pointless redefinition of all our real, long established data measurements with those silly "i" characters. I won't dwell on it any further, but 931GB is the true capacity when measured in base 2, as all data is correctly measured.

    This 1TB Blue drive uses a single 1TB platter spinning at 7200rpm. There are 2 heads (each side is 500GB).
    A single platter design is usually better for reliability than having multiple smaller platters, because there are fewer points of failure, the assembly is lighter, the motor doesn't have to work as hard, and less heat is generated.
    Single platter drives will also tend to be quieter, but due to my configuration I can't judge the noise level.

    There has been much discussion and testing among users in online forums, including WD's forum, which repeatedly show that the 1TB Blue and 1TB Black perform the same. It appears the only benefit of the 1TB Black is a longer warranty. Some Blacks are faster than this drive, but the 1TB model is not.
    Compared to a Green, the Blue is faster owing to it's faster rotation speed. The Green drives also have an "intellipark" feature which causes them to keep parking the heads after a few seconds of inactivity. This can cause laggy response and extra wear. I dislike that design - I believe power management functions should be left under the control of the operating system, which can account for user preferences and what is happening in the rest of the system. Hardcoding this behavior into the drive is ridiculous, in my opinion. The Blue behaves the way I prefer - it does not use "intellipark", it stays ready to roll until directed otherwise through power management commands from the OS.

    I wish they were making the Blue series in larger sizes - it seems this 1TB is the end of the line. I don't care for the Greens and the Blacks are more expensive.

    Partition/Sector Alignment
    --------------------------------
    Please be aware that like most modern drives, this drive uses 4KB sectors (also known as "advanced format"). If you are using Windows 2003, Windows XP or older, as I am, don't let Windows handle the partitioning of this drive. This is even an issue on unpatched versions of Vista and Windows 7. These older versions of Windows will believe that the physical sectors are 512 bytes, when in reality they are 4KB. As a result, the partition(s) will not be aligned with the physical sectors. It will still work, but performance will be reduced.
    Windows Server 2003 and Windows XP and older do not have any update to fix this, but it's not a problem as long as you do the partitioning with a suitable 3rd party utility. I think Western Digital offers a tool for this, but I've never tried it. Once the partitions are set, it's fine to let Windows format them.
    For my Windows XP install, I used a recent version of GParted to partition the drive. GParted can be downloaded and burned to a bootable CD, or installed to a USB flash drive. Just use the option to align your partition(s) on 1MB boundaries. This is the easy way to ensure they are aligned correctly for the best performance. Then boot your WinXP install disc and let it format the partition that you already created. It sounds harder than it is, it's a minor hassle but it's simple.
    If you ever change the partitions, once again use GParted or a similar utility that handles alignment for modern hard disks. Don't use the built-in XP partitioning. But again, once the partitions are created, it's fine to let Windows format them.

    The built-in partitioning is fixed in Windows 8.
    According to Microsoft, it is fixed in Windows 7 after installing Service Pack 1 - you would need to have that service pack before partitioning the drive, not after.
    Again according to Microsoft, it is also fixed in Windows Vista *after* installing update MS KB 2553708 - I assume this is automatically installed for people who use automatic updates, but I don't know that for a fact. This won't do you any good if you're doing a fresh install and your install disc predates the required update.

    The partition alignment detail I've described above is an issue you will encounter with any recent hard drive, it's not unique to this model. If you ignore it, performance will be affected but it will still work. You may see Seagate drives implying that they are immune from this, but in reality, they are not. All modern "advanced format" drives, of any brand, will perform better if sectors are properly aligned. But it's not a big deal - just use a modern partitioning utility and then you're set.
    ----------------------

    I just tested this drive using "Roadkil's Disk Speed" on Windows XP 32-bit. I'll cut out all the variables and just give the linear transfer results with large block sizes. My drive has a few partitions and there are lots of files on it, so this might affect results.
    First partition (first 20GB): 170-178MB/sec linear read
    3rd partition (physical location range is from 28-628GB): 153-177MB/sec linear read
    Last 300GB is unpartitioned so I can't test that range.
    I don't think the random access test is useful, because my partitioning greatly influences the result.
    There's a test mode for the whole physical disk, but it's results are too inconsistent.

    This drive is a great bargain if you just need a simple, inexpensive, well performing 7200rpm hard disk. I was tempted to try a Seagate SSHD, but I couldn't justify the cost compared to this. If I was shopping today, I'd look carefully at the HGST and Toshiba offerings as well, but from the WD side this is my pick for a general purpose 1TB desktop drive.

    Update: It is now 11/2015. This drive is in my desktop PC, used daily, and still works fine.
    Some months ago I ran a benchmark on this drive using the linux utility "gnome-disks". The random access performance measured out to a 15.7ms average. This is mediocre, but expected from a quiet drive. Screenshot is attached. It also shows the transfer rate across the disk (read test only, I didn't test writes).
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    261 people found this helpful
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    Top reviews from other countries

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    Ricardo
    5.0 out of 5 stars WD 2TB
    Reviewed in Brazil on December 1, 2022
    Capacity: 2TBStyle: Previous GenerationVerified Purchase
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    Getulio Da Rocha Silva
    5.0 out of 5 stars Muito Bom
    Reviewed in Brazil on September 4, 2022
    Capacity: 4TBStyle: Previous GenerationVerified Purchase
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    Johann
    4.0 out of 5 stars It is only 5400 RPM
    Reviewed in Canada on September 14, 2021
    Capacity: 3TBStyle: Previous GenerationVerified Purchase
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    Fotofreund2009
    5.0 out of 5 stars WYSIWYG
    Reviewed in Germany on June 14, 2023
    Capacity: 8TBStyle: Newest GenerationVerified Purchase
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    田中英幸
    5.0 out of 5 stars とても良い
    Reviewed in Japan on January 27, 2023
    Capacity: 2TBStyle: Previous GenerationVerified Purchase
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