The Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) costs $0.0370/GB while the Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive costs $0.0360/GB. Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive offers 3% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) vs Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive — Which Is Better Value?
Specification Comparison
| Spec | Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) | Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive |
|---|---|---|
| Brand | Synology | Seagate |
| Capacity | 20TB | 20TB |
| $/GB | $0.0370 | $0.0360 |
| Price | $739.99 | $719.99 |
| 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 $0.0360//GB compared to the Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) at $0.0370//GB — that's roughly 3% 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 $719.99 at Newegg, while the Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) starts at $739.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) 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 Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) or Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive a better deal?
As of July 2026, Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive offers better value at $0.0360//GB compared to Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) at $0.0370//GB. That is approximately 3% better value per gigabyte.
What is the price per GB of Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T)?
The Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T) is currently priced at $0.0370/GB ($739.99 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 $719.99 at Newegg, which works out to $0.0360/GB.