The WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) costs $0.0363/GB while the Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 costs $0.0506/GB. WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) offers 28% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) vs Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 — Which Is Better Value?
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Specification Comparison
| Spec | WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) | Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 16TB | 16TB |
| $/GB | $0.0363 | $0.0506 |
| Price | $580.06 | $808.99 |
| 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 WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) offers better value at $0.0363//GB compared to the Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 at $0.0506//GB — that's roughly 28% less per gigabyte.
The best deal for the WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) is $580.06 at Newegg, while the Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 starts at $808.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) and Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) or Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 a better deal?
As of August 2026, WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) offers better value at $0.0363//GB compared to Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 at $0.0506//GB. That is approximately 28% better value per gigabyte.
What is the price per GB of WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4)?
The WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4) is currently priced at $0.0363/GB ($580.06 for 16TB) at Newegg.
Where can I buy Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 for the cheapest price?
The cheapest price for the Seagate Expansion Desktop 16TB External Hard Drive HDD - USB 3.0 - STKP16000400 is $808.99 at Newegg, which works out to $0.0506/GB.