The WD - Blue 4TB PC Internal Hard Drive for Desktops costs $0.0325/GB while the 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive costs $0.0730/GB. WD - Blue 4TB PC Internal Hard Drive for Desktops offers 55% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD - Blue 4TB PC Internal Hard Drive for Desktops vs 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive — Which Is Better Value?
WD - Blue 4TB PC Internal Hard Drive for Desktops
Specification Comparison
| Spec | WD - Blue 4TB PC Internal Hard Drive for Desktops | 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive |
|---|---|---|
| Brand | Western Digital | |
| Capacity | 4 TB | 1TB |
| $/GB | $0.0325 | $0.0730 |
| Price | $129.99 | $73.01 |
| Retailer | Best Buy | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the WD - Blue 4TB PC Internal Hard Drive for Desktops offers better value at $0.0325//GB compared to the 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive at $0.0730//GB — that's roughly 55% less per gigabyte.
The best deal for the WD - Blue 4TB PC Internal Hard Drive for Desktops is $129.99 at Best Buy, while the 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive starts at $73.01 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD - Blue 4TB PC Internal Hard Drive for Desktops and 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is WD - Blue 4TB PC Internal Hard Drive for Desktops or 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive a better deal?
As of May 2026, WD - Blue 4TB PC Internal Hard Drive for Desktops offers better value at $0.0325//GB compared to 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive at $0.0730//GB. That is approximately 55% better value per gigabyte.
What is the price per GB of WD - Blue 4TB PC Internal Hard Drive for Desktops?
The WD - Blue 4TB PC Internal Hard Drive for Desktops is currently priced at $0.0325/GB ($129.99 for 4 TB) at Best Buy.
Where can I buy 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive for the cheapest price?
The cheapest price for the 81Y9731 81Y9730 1T 7.2K SATA 2.5 M3 M4 1TB Hard Drive is $73.01 at Newegg, which works out to $0.0730/GB.