The Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM costs $0.0362/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 $0.0342/GB. WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) offers 6% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM 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?
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Specification Comparison
| Spec | Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM | 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 | 16TB | 18TB |
| $/GB | $0.0362 | $0.0342 |
| Price | $579.99 | $615.95 |
| Retailer | Newegg | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM
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 $0.0342//GB compared to the Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM at $0.0362//GB — that's roughly 6% 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 $615.95 at Newegg, while the Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM starts at $579.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM 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 IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM 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 August 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 $0.0342//GB compared to Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM at $0.0362//GB. That is approximately 6% better value per gigabyte.
What is the price per GB of Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM?
The Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM is currently priced at $0.0362/GB ($579.99 for 16TB) 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 $615.95 at Newegg, which works out to $0.0342/GB.