The Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) costs $0.0269/GB while the WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) costs $0.0353/GB. Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) offers 24% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) vs WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) — Which Is Better Value?
Specification Comparison
| Spec | Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) | WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 20TB | 18TB |
| $/GB | $0.0269 | $0.0353 |
| Price | $537.86 | $635.07 |
| Retailer | Newegg | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400)
WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)
Which Should You Buy?
Based on current pricing data, the Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) offers better value at $0.0269//GB compared to the WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) at $0.0353//GB — that's roughly 24% less per gigabyte.
The best deal for the Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) is $537.86 at Newegg, while the WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) starts at $635.07 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 One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) and WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) or WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) a better deal?
As of July 2026, Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) offers better value at $0.0269//GB compared to WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) at $0.0353//GB. That is approximately 24% better value per gigabyte.
What is the price per GB of Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400)?
The Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB20000400) is currently priced at $0.0269/GB ($537.86 for 20TB) at Newegg.
Where can I buy WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) for the cheapest price?
The cheapest price for the WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) is $635.07 at Newegg, which works out to $0.0353/GB.