The Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) costs $0.0637/GB while the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty costs $0.0350/GB. Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers 45% better value per gigabyte as of September 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) vs Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty — Which Is Better Value?
Prices refresh twice daily; the final price appears at the retailer's checkout. We may earn a commission from retailer links, at no cost to you; it never affects rankings.
Specification Comparison
| Spec | Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) | Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty |
|---|---|---|
| Brand | Seagate | Avolusion |
| Capacity | 4TB | 4 TB |
| $/GB | $0.0637 | $0.0350 |
| Price | $254.99 | $139.99 |
| Retailer | Newegg | Amazon |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers better value at $0.0350//GB compared to the Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) at $0.0637//GB — that's roughly 45% less per gigabyte.
The best deal for the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty is $139.99 at Amazon, while the Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) starts at $254.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) and Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) or Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty a better deal?
As of September 2026, Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers better value at $0.0350//GB compared to Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) at $0.0637//GB. That is approximately 45% better value per gigabyte.
What is the price per GB of Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001)?
The Seagate IronWolf Pro ST4000NE001 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST4000NE001) is currently priced at $0.0637/GB ($254.99 for 4TB) at Newegg.
Where can I buy Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty for the cheapest price?
The cheapest price for the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty is $139.99 at Amazon, which works out to $0.0350/GB.