The Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) costs $0.0333/GB while the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive costs $0.0454/GB. Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) offers 27% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) vs WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive — Which Is Better Value?
Specification Comparison
| Spec | Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) | WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 12 TB | 12TB |
| $/GB | $0.0333 | $0.0454 |
| Price | $399.99 | $545.00 |
| Retailer | Amazon | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008)
WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive
Which Should You Buy?
Based on current pricing data, the Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) offers better value at $0.0333//GB compared to the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0454//GB — that's roughly 27% less per gigabyte.
The best deal for the Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) is $399.99 at Amazon, while the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive starts at $545.00 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 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) and WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) or WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive a better deal?
As of June 2026, Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) offers better value at $0.0333//GB compared to WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0454//GB. That is approximately 27% better value per gigabyte.
What is the price per GB of Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008)?
The Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008) is currently priced at $0.0333/GB ($399.99 for 12 TB) at Amazon.
Where can I buy WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive for the cheapest price?
The cheapest price for the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is $545.00 at Newegg, which works out to $0.0454/GB.