WD Green 4TB Desktop Hard Drive: 3.5-inch, SATA 6 Gb/s, IntelliPower, 64MB Cache WD40EZRX
Cool, quiet operation with massive capacity.
The advantage of cool & quiet
Heat has a large impact on the overall reliability of a HDD's life over time. It can also lead to increased power consumption, the requirement of additional fans and increased fan operation, increased noise levels and the increased chance of failure. WD Green drives come equipped with WD GreenPower Technology which allows the drive to operate cooler with increased overall reliability.
Power management with performance
Best-in-class power management, reduced heat output, and next-generation technologies such as IntelliSeek offer a perfect balance of performance and power, making WD Green a leader in performance when compared to the competition's 6 TB HDD.
Reliability with an increased lifespan
Quiet acoustics, reduced vibration and advanced 4K HDD formatting makes WD Green a stronger solution when compared to the competition and perfect for PCs and external drive applications. WD Green also features a Dual Stage Actuator, which delivers higher precision motion for 2X the data performance and increases drive reliability.
Capacity storage
Large capacity offerings of up to 6 TBs help expand customer capabilities and application usage of WD Green including primary installations in desktop PCs, as secondary storage in external cases or as reliable backup storage.
Next-generation technology
Reduced power consumption, improved data tracking, and WD GreenPower Technology all help to improve the overall reliability of WD Green making it an efficient solution that lowers your total cost of ownership. NoTouch Ramp Load Technology also protects the drive by ensuring the recording head never touches the disk media, reducing wear and tear to the head and increases drive reliability.
Upgrading your drive is easy
WD Acronis TrueImage, available as a free download on the WD Support site, enables you to copy all your data to a new drive so you don't have to reinstall your operating system to get all the benefits of a new drive.
The WD advantage
WD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. On average, each new product goes through 600,000 hours of testing. WD also has a detailed Knowledge Base with more than 1,000 helpful articles. You can also call toll-free support 7 days per week in the U.S. and Canada. See the WD Support site for full details.
Features at a glance
WD-certified packaging
All WD drives purchased from Amazon.com are shipped in WD-certified hard drive packaging. It is designed and fully tested to provide WD products with the highest of safety while in transit. With WD-certified packaging, you can rest assured that your WD hard drive will arrive safely, fully protected, in a non-descript, easy-open package.
Recommended use
WD Green storage is tested and recommended for primary use in desktop and All-in-One PCs, as secondary storage for archiving, in external cases or as reliable backup storage.
*Desktop drives are not recommended for use in RAID environments, please consider using WD Red hard drives for personal/small/home office, 1-8 bay NAS systems and WD Red Pro hard drives for medium to large size business, 8-16 bay NAS systems.
 3.5-inch Internal Comparison Chart |  WD Blue |  WD Green |  WD Black |  WD Red | WD Red Pro |  WD Purple |
| Solid performance and reliability for everyday computing. | Cool, quiet operation with massive capacity. | Maximum performance for power computing. | The right drive for personal, home or small office NAS. | The right drive for medium or large business NAS. | Built for personal, home office or small business surveillance systems using up to 32 cameras. | |
| Ideal for | Family and business computing. | Desktop PCs, secondary storage and external drives. | Photo and video editing, and maxed out gaming systems. | Specifically designed and tested for personal, small and home office, 1-8 bay NAS. | Designed and built for medium and large business, 8-16 bay NAS systems. | Home / SOHO / SMB |
| Capacity range | 80 GB €“ 1 TB | 500 GB €“ 6 TB | 500 GB €“ 4 TB | 1 TB €“ 6 TB | 2 TB €“ 4 TB | 1 TB €“ 4 TB |
| Interface | SATA 6 Gb/s PATA 100 MB/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s |
| Form factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Cache | 8 MB €“ 64 MB | 64 MB | 32 MB €“ 64 MB | 64 MB | 64 MB | 64 MB |
| Highest capacity |  | | | |||
| Highest performance | | |||||
| Photo/video editing | | |||||
| Network Storage Systems | | | ||||
| Video Surveillance | |
