The Seagate 4 TB 3.5" Internal Hard Drive costs $0.0285/GB while the WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver costs $0.0350/GB. Seagate 4 TB 3.5" Internal Hard Drive offers 19% better value per gigabyte as of March 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate 4 TB 3.5" Internal Hard Drive vs WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver — Which Is Better Value?
Seagate 4 TB 3.5" Internal Hard Drive
WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver
Specification Comparison
| Spec | Seagate 4 TB 3.5" Internal Hard Drive | WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 4 TB | 4 TB |
| $/GB | $0.0285 | $0.0350 |
| Price | $114.00 | $139.99 |
| Retailer | Amazon | Best Buy |
| Category | Hard Drives & SSDs | Hard Drives & SSDs |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Seagate 4 TB 3.5" Internal Hard Drive offers better value at $0.0285//GB compared to the WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver at $0.0350//GB — that's roughly 19% less per gigabyte.
The best deal for the Seagate 4 TB 3.5" Internal Hard Drive is $114.00 at Amazon, while the WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver starts at $139.99 at Best Buy.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Seagate 4 TB 3.5" Internal Hard Drive and WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate 4 TB 3.5" Internal Hard Drive or WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver a better deal?
As of March 2026, Seagate 4 TB 3.5" Internal Hard Drive offers better value at $0.0285//GB compared to WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver at $0.0350//GB. That is approximately 19% better value per gigabyte.
What is the price per GB of Seagate 4 TB 3.5" Internal Hard Drive?
The Seagate 4 TB 3.5" Internal Hard Drive is currently priced at $0.0285/GB ($114.00 for 4 TB) at Amazon.
Where can I buy WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver for the cheapest price?
The cheapest price for the WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver is $139.99 at Best Buy, which works out to $0.0350/GB.