The UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) costs $0.0687/GB while the Seagate 4 TB 3.5" Internal Hard Drive costs $0.0313/GB. Seagate 4 TB 3.5" Internal Hard Drive offers 55% better value per gigabyte as of April 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) vs Seagate 4 TB 3.5" Internal Hard Drive — Which Is Better Value?
Seagate 4 TB 3.5" Internal Hard Drive
Specification Comparison
| Spec | UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) | Seagate 4 TB 3.5" Internal Hard Drive |
|---|---|---|
| Brand | UnionSine | Seagate |
| Capacity | 1 TB | 4 TB |
| $/GB | $0.0687 | $0.0313 |
| Price | $68.71 | $125.00 |
| Retailer | Amazon | Amazon |
| 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 $0.0313//GB compared to the UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) at $0.0687//GB — that's roughly 55% less per gigabyte.
The best deal for the Seagate 4 TB 3.5" Internal Hard Drive is $125.00 at Amazon, while the UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) starts at $68.71 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) and Seagate 4 TB 3.5" Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) or Seagate 4 TB 3.5" Internal Hard Drive a better deal?
As of April 2026, Seagate 4 TB 3.5" Internal Hard Drive offers better value at $0.0313//GB compared to UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) at $0.0687//GB. That is approximately 55% better value per gigabyte.
What is the price per GB of UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black)?
The UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) is currently priced at $0.0687/GB ($68.71 for 1 TB) at Amazon.
Where can I buy Seagate 4 TB 3.5" Internal Hard Drive for the cheapest price?
The cheapest price for the Seagate 4 TB 3.5" Internal Hard Drive is $125.00 at Amazon, which works out to $0.0313/GB.