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 while the Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 costs $0.0422/GB. WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) offers 16% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) vs Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 — Which Is Better Value?
Specification Comparison
| Spec | WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) | Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 18TB | 16TB |
| $/GB | $0.0353 | $0.0422 |
| Price | $635.07 | $675.00 |
| 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 WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) offers better value at $0.0353//GB compared to the Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 at $0.0422//GB — that's roughly 16% less per gigabyte.
The best deal 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, while the Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 starts at $675.00 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 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) and Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) or Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 a better deal?
As of July 2026, WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) offers better value at $0.0353//GB compared to Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 at $0.0422//GB. That is approximately 16% better value per gigabyte.
What is the price per GB of WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)?
The WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) is currently priced at $0.0353/GB ($635.07 for 18TB) at Newegg.
Where can I buy Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 for the cheapest price?
The cheapest price for the Seagate SkyHawk AI 16TB 3.5' SATA 256MB 7200RPM Hard Drive ST16000VE000 is $675.00 at Newegg, which works out to $0.0422/GB.