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 SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 costs $2.0445/GB. Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers 98% 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 SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 — 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 | SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 |
|---|---|---|
| Brand | Western Digital | SanDisk |
| Capacity | 4 TB | 64GB |
| $/GB | $0.0324 | $2.0445 |
| Price | $129.77 | $130.85 |
| 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 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 SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 at $2.0445//GB — that's roughly 98% 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 SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 starts at $130.85 at Newegg.
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 SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 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 SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 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 SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 at $2.0445//GB. That is approximately 98% 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 SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 for the cheapest price?
The cheapest price for the SanDisk Extreme Pro 64GB Secure Digital Extended Capacity (SDXC) Flash Card Model SDSDXPB-064G-A46 is $130.85 at Newegg, which works out to $2.0445/GB.