Western Digital
Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - WD40EZZX
Bottom line: The Western Digital 4TB WD Blue PC Internal Hard Drive HDD ($176.99 on Amazon as of 2026-10-06): 4TB of bulk capacity in one 3.5-inch bay; main trade-off: 5400 RPM is slow next to any SATA or NVMe SSD.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 4TB of bulk capacity in one 3.5-inch bay
- ✓ 128 MB cache buffers sustained desktop transfers
- ✓ 5400 RPM runs cooler and quieter than 7200 RPM
- ✓ Includes Acronis True Image WD Edition cloning software
Cons
- ✗ 5400 RPM is slow next to any SATA or NVMe SSD
- ✗ 2-year limited warranty trails NAS-class WD drives
- ✗ Mechanical platters mean noise and vibration in quiet builds
- ✗ 3.5-inch only, so no laptop or small-form-factor fit
Manufacturer description
The Western Digital WD Blue 4TB internal hard drive (WD40EZZX) is built for the kind of everyday desktop storage that quietly disappears into the background of a build. It spins at 5400 RPM and connects over SATA 6 Gb/s with a 128 MB cache, a combination that favors cool, quiet operation over benchmark-chasing speed. If you are adding bulk capacity to a desktop PC, archiving a game library, or keeping a local media collection off your boot SSD, this is the drive class that job calls for. The 4TB capacity sits in the middle of the WD Blue lineup, which reaches up to 12TB, so you can…
SpecPicks Verdict
SpecPicks scored Western Digital 4TB WD Blue PC Internal Hard Drive HDD using a rating × review-volume × price-fit model applied to published specs and reviews across the drives & media category. Western Digital's drives & media lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for drives & media of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Is the WD Blue 4TB fast enough to use as a boot drive?
It can boot Windows, but at 5400 RPM it is meaningfully slower than an SSD. WD positions the Blue line for reliable everyday computing and extra desktop storage; most builders pair it with an SSD boot drive and use the 4TB for bulk files.
What is the warranty on the WD40EZZX?
Western Digital lists a 2-year limited warranty for this drive. Registration and claim terms are handled by Western Digital, so check the product listing for current warranty details in your region.
Will this fit in my desktop case?
It is a standard 3.5-inch internal hard drive using a SATA 6 Gb/s interface, so it fits any desktop case with a free 3.5-inch bay and a spare SATA data and power connector. It is not a 2.5-inch laptop drive.
Do I get software to move my existing drive over?
Yes. Western Digital includes a free copy of Acronis True Image WD Edition cloning software, which lets you copy an existing volume onto the new 4TB drive instead of reinstalling from scratch.
How does 4TB compare to the rest of the WD Blue range?
WD Blue capacities go up to 12TB, so 4TB is a mid-range choice. It is a common pick when you want substantial storage per bay without paying for the largest tier, and it lets you standardize a multi-drive desktop on one drive family.
Key Features
- Reliable everyday computing
- Western Digital quality and reliability
- Free Acronis True Image WD Edition cloning software
- Capacities up to 12TB
- 2-year limited warranty
Full Specifications
| Brand | WD |
|---|---|
| Color | Blue |
| Model Name | WD Blue |
| Form Factor | 3.5-inch |
| Model Number | WD40EZZX-SPCPBB0 |
| Compatibility | PC |
| Built-In Media | hard drive |
| Hard-Drive Size | 4 TB |
| Mfr Part Number | WD40EZZX |
| Number of Items | 1 |
| Special Feature | Acronis True Image, NoTouch Ramp Load Technology |
| Hardware Platform | PC |
| Installation Type | Internal Hard Drive |
| Compatible Devices | NAS Devices |
| Data Transfer Rate | 180 Megabits Per Second |
| Enclosure Material | Information Not Available |
| Additional Features | Acronis True Image, NoTouch Ramp Load Technology |
| Hard Disk Interface | Serial ATA-600 |
| Warranty Description | 2 year limited warranty |
| Hard Disk Description | Mechanical Hard Disk |
Ready to buy?
Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - WD40EZZX is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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