The SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive costs $0.1075/GB while the Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive costs $0.0345/GB. Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive offers 68% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive vs Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive — Which Is Better Value?
Specification Comparison
| Spec | SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive | Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive |
|---|---|---|
| Brand | SanDisk | Seagate |
| Capacity | 6TB | 6TB |
| $/GB | $0.1075 | $0.0345 |
| Price | $644.99 | $206.97 |
| 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 Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive offers better value at $0.0345//GB compared to the SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive at $0.1075//GB — that's roughly 68% less per gigabyte.
The best deal for the Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is $206.97 at Newegg, while the SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive starts at $644.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive and Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive or Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive a better deal?
As of July 2026, Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive offers better value at $0.0345//GB compared to SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive at $0.1075//GB. That is approximately 68% better value per gigabyte.
What is the price per GB of SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive?
The SanDisk Professional 6TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive is currently priced at $0.1075/GB ($644.99 for 6TB) at Newegg.
Where can I buy Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive for the cheapest price?
The cheapest price for the Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is $206.97 at Newegg, which works out to $0.0345/GB.