The WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN costs $0.0347/GB while the Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black costs $0.0822/GB. WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN offers 58% better value per gigabyte as of July 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 Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black — Which Is Better Value?
Specification Comparison
| Spec | WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN | Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black |
|---|---|---|
| Brand | Western Digital | Silicon Power |
| Capacity | 4TB | 4TB |
| $/GB | $0.0347 | $0.0822 |
| Price | $138.99 | $328.99 |
| 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 Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black at $0.0822//GB — that's roughly 58% 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 Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black starts at $328.99 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 Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black 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 Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black a better deal?
As of July 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 Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black at $0.0822//GB. That is approximately 58% 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 Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black for the cheapest price?
The cheapest price for the Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black is $328.99 at Newegg, which works out to $0.0822/GB.