The TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive costs $0.0507/GB while the Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray costs $0.0325/GB. Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray offers 36% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive vs Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray — Which Is Better Value?
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Specification Comparison
| Spec | TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive | Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray |
|---|---|---|
| Brand | Toshiba | Seagate |
| Capacity | 18TB | 20 TB |
| $/GB | $0.0507 | $0.0325 |
| Price | $911.90 | $649.99 |
| Retailer | Newegg | Best Buy |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray offers better value at $0.0325//GB compared to the TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0507//GB — that's roughly 36% less per gigabyte.
The best deal for the Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray is $649.99 at Best Buy, while the TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive starts at $911.90 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 X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive and Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray product page for detailed specifications and price history.
Frequently Asked Questions
Is TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive or Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray a better deal?
As of August 2026, Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray offers better value at $0.0325//GB compared to TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0507//GB. That is approximately 36% better value per gigabyte.
What is the price per GB of TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive?
The TOSHIBA X300 Pro HDWR51JXZSTB 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is currently priced at $0.0507/GB ($911.90 for 18TB) at Newegg.
Where can I buy Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray for the cheapest price?
The cheapest price for the Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray is $649.99 at Best Buy, which works out to $0.0325/GB.