The Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) costs $0.0550/GB while the WD - Purple 4TB Surveillance Internal Hard Drive costs $0.0262/GB. WD - Purple 4TB Surveillance Internal Hard Drive offers 52% better value per gigabyte as of April 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) vs WD - Purple 4TB Surveillance Internal Hard Drive — Which Is Better Value?
WD - Purple 4TB Surveillance Internal Hard Drive
Specification Comparison
| Spec | Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) | WD - Purple 4TB Surveillance Internal Hard Drive |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 1 TB | 4 TB |
| $/GB | $0.0550 | $0.0262 |
| Price | $55.00 | $104.99 |
| Retailer | Amazon | Best Buy |
| Category | Hard Drives & SSDs | Hard Drives & SSDs |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0262//GB compared to the Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) at $0.0550//GB — that's roughly 52% less per gigabyte.
The best deal for the WD - Purple 4TB Surveillance Internal Hard Drive is $104.99 at Best Buy, while the Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) starts at $55.00 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) and WD - Purple 4TB Surveillance Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) or WD - Purple 4TB Surveillance Internal Hard Drive a better deal?
As of April 2026, WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0262//GB compared to Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) at $0.0550//GB. That is approximately 52% better value per gigabyte.
What is the price per GB of Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003)?
The Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003) is currently priced at $0.0550/GB ($55.00 for 1 TB) at Amazon.
Where can I buy WD - Purple 4TB Surveillance Internal Hard Drive for the cheapest price?
The cheapest price for the WD - Purple 4TB Surveillance Internal Hard Drive is $104.99 at Best Buy, which works out to $0.0262/GB.