The WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP costs $0.0490/GB while the Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive costs $0.0300/GB. Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive offers 39% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP vs Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive — Which Is Better Value?
Specification Comparison
| Spec | WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP | Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 18TB | 16TB |
| $/GB | $0.0490 | $0.0300 |
| Price | $881.10 | $479.99 |
| 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 ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive offers better value at $0.0300//GB compared to the WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP at $0.0490//GB — that's roughly 39% less per gigabyte.
The best deal for the Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive is $479.99 at Newegg, while the WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP starts at $881.10 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 Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP and Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP or Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive a better deal?
As of June 2026, Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive offers better value at $0.0300//GB compared to WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP at $0.0490//GB. That is approximately 39% better value per gigabyte.
What is the price per GB of WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP?
The WD Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD181PURP is currently priced at $0.0490/GB ($881.10 for 18TB) at Newegg.
Where can I buy Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive for the cheapest price?
The cheapest price for the Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive is $479.99 at Newegg, which works out to $0.0300/GB.