The Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 costs $0.0443/GB while the Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive costs $0.0325/GB. Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive offers 27% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 vs Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive — Which Is Better Value?
Specification Comparison
| Spec | Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 | Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive |
|---|---|---|
| Brand | Seagate | Toshiba |
| Capacity | 18TB | 20TB |
| $/GB | $0.0443 | $0.0325 |
| Price | $797.45 | $649.97 |
| 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 Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive offers better value at $0.0325//GB compared to the Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 at $0.0443//GB — that's roughly 27% less per gigabyte.
The best deal for the Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive is $649.97 at Newegg, while the Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 starts at $797.45 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 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 and Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 or Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive a better deal?
As of July 2026, Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive offers better value at $0.0325//GB compared to Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 at $0.0443//GB. That is approximately 27% better value per gigabyte.
What is the price per GB of Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000?
The Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000 is currently priced at $0.0443/GB ($797.45 for 18TB) at Newegg.
Where can I buy Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive for the cheapest price?
The cheapest price for the Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive is $649.97 at Newegg, which works out to $0.0325/GB.