The Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail costs $0.0592/GB while the Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black costs $0.0222/GB. Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black offers 63% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail vs Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black — Which Is Better Value?
Specification Comparison
| Spec | Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail | Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black |
|---|---|---|
| Brand | Synology | Seagate |
| Capacity | 20TB | 18TB |
| $/GB | $0.0592 | $0.0222 |
| Price | $1182.99 | $399.00 |
| 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 One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black offers better value at $0.0222//GB compared to the Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail at $0.0592//GB — that's roughly 63% less per gigabyte.
The best deal for the Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black is $399.00 at Newegg, while the Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail starts at $1182.99 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 HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail and Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black product page for detailed specifications and price history.
Frequently Asked Questions
Is Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail or Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black a better deal?
As of June 2026, Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black offers better value at $0.0222//GB compared to Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail at $0.0592//GB. That is approximately 63% better value per gigabyte.
What is the price per GB of Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail?
The Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Enterprise 3.5' SATA HDD Retail is currently priced at $0.0592/GB ($1182.99 for 20TB) at Newegg.
Where can I buy Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black for the cheapest price?
The cheapest price for the Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black is $399.00 at Newegg, which works out to $0.0222/GB.