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 HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 costs $0.0469/GB. Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM offers 20% 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 HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 — 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 | HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 |
|---|---|---|
| Brand | Seagate | HP |
| Capacity | 4TB | 4TB |
| $/GB | $0.0375 | $0.0469 |
| Price | $149.99 | $187.45 |
| 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 HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 at $0.0469//GB — that's roughly 20% 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 HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 starts at $187.45 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 HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 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 HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 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 HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 at $0.0469//GB. That is approximately 20% 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 HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 for the cheapest price?
The cheapest price for the HP 4 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 861678-B21 is $187.45 at Newegg, which works out to $0.0469/GB.