The WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive costs $0.1199/GB while the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty costs $0.0325/GB. Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers 73% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive vs Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty — Which Is Better Value?
Specification Comparison
| Spec | WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive | Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty |
|---|---|---|
| Brand | Western Digital | Avolusion |
| Capacity | 4TB | 4 TB |
| $/GB | $0.1199 | $0.0325 |
| Price | $479.63 | $129.99 |
| Retailer | Newegg | Amazon |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers better value at $0.0325//GB compared to the WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive at $0.1199//GB — that's roughly 73% less per gigabyte.
The best deal for the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty is $129.99 at Amazon, while the WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive starts at $479.63 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive and Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive or Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty a better deal?
As of June 2026, Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers better value at $0.0325//GB compared to WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive at $0.1199//GB. That is approximately 73% better value per gigabyte.
What is the price per GB of WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive?
The WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive is currently priced at $0.1199/GB ($479.63 for 4TB) at Newegg.
Where can I buy Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty for the cheapest price?
The cheapest price for the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty is $129.99 at Amazon, which works out to $0.0325/GB.