The Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ costs $0.0600/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 44% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ vs HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive — Which Is Better Value?
Specification Comparison
| Spec | Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ | HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive |
|---|---|---|
| Brand | Western Digital | HGST |
| Capacity | 4 TB | 3TB |
| $/GB | $0.0600 | $0.0333 |
| Price | $239.99 | $100.00 |
| Retailer | Amazon | 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 Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ at $0.0600//GB — that's roughly 44% 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 Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ starts at $239.99 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ 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 Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ or HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive a better deal?
As of July 2026, HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive offers better value at $0.0333//GB compared to Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ at $0.0600//GB. That is approximately 44% better value per gigabyte.
What is the price per GB of Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ?
The Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ is currently priced at $0.0600/GB ($239.99 for 4 TB) at Amazon.
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.