The Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM costs $0.0375/GB while the WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) costs $0.0625/GB. Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM offers 40% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM vs WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) — Which Is Better Value?
Specification Comparison
| Spec | Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM | WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 4TB | 4TB |
| $/GB | $0.0375 | $0.0625 |
| Price | $149.99 | $249.99 |
| Retailer | Newegg | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM offers better value at $0.0375//GB compared to the WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) at $0.0625//GB — that's roughly 40% less per gigabyte.
The best deal for the Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM is $149.99 at Newegg, while the WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) starts at $249.99 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 BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM and WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM or WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) a better deal?
As of July 2026, Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM offers better value at $0.0375//GB compared to WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) at $0.0625//GB. That is approximately 40% better value per gigabyte.
What is the price per GB of Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM?
The Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM is currently priced at $0.0375/GB ($149.99 for 4TB) at Newegg.
Where can I buy WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) for the cheapest price?
The cheapest price for the WD 4TB My Passport Portable Storage External Hard Drive USB 3.2 for PC/MAC Red (WDBPKJ0040BRD-WESN) is $249.99 at Newegg, which works out to $0.0625/GB.