The Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive costs $0.0300/GB while the Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) costs $0.0376/GB. Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive offers 20% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive vs Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) — Which Is Better Value?
Specification Comparison
| Spec | Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive | Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) |
|---|---|---|
| Brand | Toshiba | Seagate |
| Capacity | 20TB | 18TB |
| $/GB | $0.0300 | $0.0376 |
| Price | $598.99 | $677.00 |
| 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 Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive offers better value at $0.0300//GB compared to the Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) at $0.0376//GB — that's roughly 20% less per gigabyte.
The best deal for the Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive is $598.99 at Newegg, while the Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) starts at $677.00 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive and Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) product page for detailed specifications and price history.
Frequently Asked Questions
Is Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive or Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) a better deal?
As of June 2026, Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive offers better value at $0.0300//GB compared to Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) at $0.0376//GB. That is approximately 20% better value per gigabyte.
What is the price per GB of Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive?
The Toshiba 20TB X300 Performance 3.5' CMR Internal Hard Drive is currently priced at $0.0300/GB ($598.99 for 20TB) at Newegg.
Where can I buy Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) for the cheapest price?
The cheapest price for the Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) is $677.00 at Newegg, which works out to $0.0376/GB.