The Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray costs $0.0675/GB while the Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive costs $0.0335/GB. Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive offers 50% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray vs Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive — Which Is Better Value?
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Specification Comparison
| Spec | Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray | Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive |
|---|---|---|
| Brand | Rocstor | Seagate |
| Capacity | 20TB | 20TB |
| $/GB | $0.0675 | $0.0335 |
| Price | $1349.59 | $669.99 |
| 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 IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive offers better value at $0.0335//GB compared to the Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray at $0.0675//GB — that's roughly 50% less per gigabyte.
The best deal for the Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is $669.99 at Newegg, while the Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray starts at $1349.59 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray and Seagate IronWolf Pro ST20000NT001 20TB 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 Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray or Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive a better deal?
As of August 2026, Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive offers better value at $0.0335//GB compared to Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray at $0.0675//GB. That is approximately 50% better value per gigabyte.
What is the price per GB of Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray?
The Rocstor Rocpro D90 20 TB Desktop Rugged Hard Drive External SATA SATA/600 Aluminum Gray is currently priced at $0.0675/GB ($1349.59 for 20TB) at Newegg.
Where can I buy Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive for the cheapest price?
The cheapest price for the Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is $669.99 at Newegg, which works out to $0.0335/GB.