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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail costs $0.2530/GB. Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers 87% 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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail — 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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail |
|---|---|---|
| Brand | Western Digital | SanDisk |
| Capacity | 4 TB | 512GB |
| $/GB | $0.0324 | $0.2530 |
| Price | $129.77 | $129.55 |
| Retailer | Amazon | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ
SanDisk SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail
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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail at $0.2530//GB — that's roughly 87% 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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail starts at $129.55 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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail 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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail 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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail at $0.2530//GB. That is approximately 87% 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 SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail for the cheapest price?
The cheapest price for the SanDisk SDSQXA1-512G-GN6MN MAS 512GB 8pin microSDXC r160MB/s w90MB/s C10 U3 V30 A2 UHS-I SanDisk Extreme microSDXC Memory Card w/o Adapter Retail is $129.55 at Newegg, which works out to $0.2530/GB.