The WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN costs $0.0347/GB while the WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive costs $0.1199/GB. WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN offers 71% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN vs WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive — Which Is Better Value?
Specification Comparison
| Spec | WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN | WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive |
|---|---|---|
| Brand | Western Digital | Western Digital |
| Capacity | 4TB | 4TB |
| $/GB | $0.0347 | $0.1199 |
| Price | $138.99 | $479.63 |
| 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 WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN offers better value at $0.0347//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 71% less per gigabyte.
The best deal for the WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN is $138.99 at Newegg, 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 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN and WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN or WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive a better deal?
As of June 2026, WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN offers better value at $0.0347//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 71% better value per gigabyte.
What is the price per GB of WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN?
The WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN is currently priced at $0.0347/GB ($138.99 for 4TB) at Newegg.
Where can I buy WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive for the cheapest price?
The cheapest price for the WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Surveillance Hard Drive is $479.63 at Newegg, which works out to $0.1199/GB.