The Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) costs $0.0279/GB while the Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA costs $0.0478/GB. Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) offers 42% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) vs Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA — Which Is Better Value?
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Specification Comparison
| Spec | Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) | Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 20TB | 20TB |
| $/GB | $0.0279 | $0.0478 |
| Price | $559.00 | $955.81 |
| 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 Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) offers better value at $0.0279//GB compared to the Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA at $0.0478//GB — that's roughly 42% less per gigabyte.
The best deal for the Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) is $559.00 at Newegg, while the Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA starts at $955.81 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 Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) and Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) or Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA a better deal?
As of August 2026, Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) offers better value at $0.0279//GB compared to Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA at $0.0478//GB. That is approximately 42% better value per gigabyte.
What is the price per GB of Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR)?
The Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) is currently priced at $0.0279/GB ($559.00 for 20TB) at Newegg.
Where can I buy Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA for the cheapest price?
The cheapest price for the Western Digital Ultrastar DC HC560 0F38785 20 TB Hard Drive 3.5' Internal SATA is $955.81 at Newegg, which works out to $0.0478/GB.