The Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 costs $0.0303/GB while the Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm costs $0.0389/GB. Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 offers 22% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 vs Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm — Which Is Better Value?
Specification Comparison
| Spec | Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 | Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm |
|---|---|---|
| Brand | Seagate | Seagate |
| Capacity | 16 TB | 16TB |
| $/GB | $0.0303 | $0.0389 |
| Price | $485.09 | $622.10 |
| Retailer | Amazon | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400
Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm
Which Should You Buy?
Based on current pricing data, the Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 offers better value at $0.0303//GB compared to the Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm at $0.0389//GB — that's roughly 22% less per gigabyte.
The best deal for the Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 is $485.09 at Amazon, while the Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm starts at $622.10 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 Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 and Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 or Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm a better deal?
As of July 2026, Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 offers better value at $0.0303//GB compared to Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm at $0.0389//GB. That is approximately 22% better value per gigabyte.
What is the price per GB of Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400?
The Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 is currently priced at $0.0303/GB ($485.09 for 16 TB) at Amazon.
Where can I buy Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm for the cheapest price?
The cheapest price for the Seagate Exos X18 ST16000NM001J 16 TB Hard Drive - Internal - SATA (SATA/600) - Video Surveillance System, Storage System Device Supported - 7200rpm is $622.10 at Newegg, which works out to $0.0389/GB.