The WD WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ costs $0.0575/GB while the Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM costs $0.0375/GB. Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM offers 35% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ vs Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM — Which Is Better Value?
Specification Comparison
| Spec | WD WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ | Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 4TB | 4TB |
| $/GB | $0.0575 | $0.0375 |
| Price | $229.99 | $149.99 |
| 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 WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ at $0.0575//GB — that's roughly 35% 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 WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ starts at $229.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ and Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM product page for detailed specifications and price history.
Frequently Asked Questions
Is WD WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ or Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM 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 WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ at $0.0575//GB. That is approximately 35% better value per gigabyte.
What is the price per GB of WD WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ?
The WD WD43PURZ 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5' - WD43URZ is currently priced at $0.0575/GB ($229.99 for 4TB) at Newegg.
Where can I buy Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM for the cheapest price?
The cheapest price 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, which works out to $0.0375/GB.