Western Digital
Western Digital 4TB WD Blue SA510 Internal Solid State Drive SSD (WDS400T3B0A)
Bottom line: The Western Digital 4TB WD Blue SA510 Internal Solid State Drive SSD ($771.42 on Amazon as of 2026-10-06): 4TB in a 2.5-inch bay, rare capacity for SATA-only laptops and older desktops; main trade-off: SATA III caps speed near 560 MB/s; NVMe drives are several times faster.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 4TB in a 2.5-inch bay, rare capacity for SATA-only laptops and older desktops
- ✓ Up to 560 MB/s read saturates the SATA III 6 Gb/s interface
- ✓ Includes Acronis True Image for Western Digital for drive cloning
- ✓ Standard 7mm height fits most laptop drive caddies without a spacer
Cons
- ✗ SATA III caps speed near 560 MB/s; NVMe drives are several times faster
- ✗ 2.5-inch form factor is being phased out of newer motherboards
- ✗ No DRAM or endurance rating published in the listed specs
- ✗ Write speed (520 MB/s) trails read, so large transfers lean on the slower number
Manufacturer description
The WD Blue SA510 4TB brings serious capacity to a format most drives abandoned: a standard 2.5-inch, 7mm SATA III bay. That matters if you are upgrading a laptop, an older desktop, or a NAS-adjacent build that never got an M.2 slot. Western Digital rates it at up to 560 MB/s sequential read and up to 520 MB/s sequential write, which is effectively the ceiling of the SATA III 6 Gb/s interface, so you are getting everything the connection can deliver rather than paying for headroom you cannot use. At 4TB, this is aimed at people who fill drives: video editors sitting on multi-camera project…
SpecPicks Verdict
SpecPicks scored Western Digital 4TB WD Blue SA510 Internal Solid State Drive SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Western Digital's ssds & storage 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 ssds & storage 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
How fast is the WD Blue SA510 4TB?
Western Digital rates it at up to 560 MB/s sequential read and up to 520 MB/s sequential write over SATA III 6 Gb/s, which is essentially the maximum the SATA interface allows.
Will this fit in my laptop?
It is a standard 2.5-inch, 7mm drive, which fits the majority of laptop drive bays. Confirm your laptop uses a 2.5-inch SATA bay rather than only an M.2 slot before ordering.
Is this faster than an NVMe SSD?
No. This is a SATA III drive capped near 560 MB/s. NVMe M.2 drives run several times faster. Choose this when your system has no M.2 slot, or when you need 4TB in a 2.5-inch bay.
Can I clone my existing drive onto it?
Yes. Western Digital includes Acronis True Image for Western Digital backup software with the SA510, so you can migrate an existing installation instead of reinstalling your operating system.
What warranty does it come with?
Warranty terms are not listed in the product specs here. Check the current Amazon listing or Western Digital's support page for the warranty period that applies to the WDS400T3B0A.
Key Features
- Storage Capacity: 4TB.
- Form Factor: 2.5-inch.
- Interface: SATA III.
- Sequential Read Speed (Up To): 560 MB/s.
- Sequential Write Speed (Up To): 520 MB/s.
Full Specifications
| Brand | Western Digital |
|---|---|
| Color | Blue |
| Interface | SATA III. |
| Model Name | WD Blue SA510 |
| Read Speed | 560 megabytes_per_second |
| Form Factor | 2.5-inch |
| Media Speed | 520 |
| Model Number | WDS400T3B0A |
| Built-In Media | Internal Solid State Drive |
| Hard-Drive Size | 4 TB |
| Mfr Part Number | WDS400T3B0A |
| Number of Items | 1 |
| Special Feature | Data Recovery Service |
| Storage Capacity | 4TB. |
| Hardware Platform | PC, laptop |
| Installation Type | Solid State Drive |
| Compatible Devices | Laptop, Desktop, PC |
| Data Transfer Rate | 560 megabytes_per_second |
| Enclosure Material | polycarbonate |
| Additional Features | Data Recovery Service |
| Full listing title | Western Digital 4TB WD Blue SA510 Internal Solid State Drive SSD - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T3B0A |
Ready to buy?
Western Digital 4TB WD Blue SA510 Internal Solid State Drive SSD - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T3B0A 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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