The Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) costs $0.0374/GB while the MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA costs $0.0436/GB. Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) offers 14% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) vs MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA — Which Is Better Value?
Specification Comparison
| Spec | Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) | MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA |
|---|---|---|
| Brand | Seagate | Toshiba |
| Capacity | 18TB | 18TB |
| $/GB | $0.0374 | $0.0436 |
| Price | $672.99 | $785.50 |
| 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 Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) offers better value at $0.0374//GB compared to the MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA at $0.0436//GB — that's roughly 14% less per gigabyte.
The best deal for the Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) is $672.99 at Newegg, while the MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA starts at $785.50 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 Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) and MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) or MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA a better deal?
As of July 2026, Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) offers better value at $0.0374//GB compared to MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA at $0.0436//GB. That is approximately 14% better value per gigabyte.
What is the price per GB of Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D)?
The Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D) is currently priced at $0.0374/GB ($672.99 for 18TB) at Newegg.
Where can I buy MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA for the cheapest price?
The cheapest price for the MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA is $785.50 at Newegg, which works out to $0.0436/GB.