The Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ costs $0.0324/GB while the PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black costs $0.1562/GB. Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers 79% better value per gigabyte as of May 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, 256 MB Cache, 3.5" - WD43PURZ vs PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black — Which Is Better Value?
Specification Comparison
| Spec | Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ | PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black |
|---|---|---|
| Brand | Western Digital | PNY |
| Capacity | 4 TB | 128 GB |
| $/GB | $0.0324 | $0.1562 |
| Price | $129.77 | $19.99 |
| Retailer | Amazon | Best Buy |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | usb-a |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers better value at $0.0324//GB compared to the PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black at $0.1562//GB — that's roughly 79% less per gigabyte.
The best deal for the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ is $129.77 at Amazon, while the PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black starts at $19.99 at Best Buy.
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, 256 MB Cache, 3.5" - WD43PURZ and PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black 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, 256 MB Cache, 3.5" - WD43PURZ or PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black a better deal?
As of May 2026, Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers better value at $0.0324//GB compared to PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black at $0.1562//GB. That is approximately 79% 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, 256 MB Cache, 3.5" - WD43PURZ?
The Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ is currently priced at $0.0324/GB ($129.77 for 4 TB) at Amazon.
Where can I buy PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black for the cheapest price?
The cheapest price for the PNY - 128GB Attaché 4 USB 2.0 Type A Flash Drive - Black is $19.99 at Best Buy, which works out to $0.1562/GB.