The Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black costs $0.2242/GB while the HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive costs $0.0333/GB. HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive offers 85% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black vs HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive — Which Is Better Value?
Specification Comparison
| Spec | Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black | HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive |
|---|---|---|
| Brand | Seagate | HGST |
| Capacity | 500GB | 3TB |
| $/GB | $0.2242 | $0.0333 |
| Price | $112.10 | $100.00 |
| 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 HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive offers better value at $0.0333//GB compared to the Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black at $0.2242//GB — that's roughly 85% less per gigabyte.
The best deal for the HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive is $100.00 at Newegg, while the Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black starts at $112.10 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 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black and HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black or HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive a better deal?
As of June 2026, HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive offers better value at $0.0333//GB compared to Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black at $0.2242//GB. That is approximately 85% better value per gigabyte.
What is the price per GB of Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black?
The Seagate 500GB Expansion Portable Hard Drive USB 3.0 Model STBX500100 Black is currently priced at $0.2242/GB ($112.10 for 500GB) at Newegg.
Where can I buy HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive for the cheapest price?
The cheapest price for the HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive is $100.00 at Newegg, which works out to $0.0333/GB.