The SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G costs $0.3328/GB while the Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) costs $0.1796/GB. Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) offers 46% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G vs Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) — Which Is Better Value?
Specification Comparison
| Spec | SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G | Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) |
|---|---|---|
| Brand | SanDisk | Silicon Power |
| Capacity | 64GB | 128GB |
| $/GB | $0.3328 | $0.1796 |
| Price | $21.30 | $22.99 |
| Retailer | Newegg | Newegg |
| Category | SD Cards | SD Cards |
| Subcategory | sd | sd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) offers better value at $0.1796//GB compared to the SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G at $0.3328//GB — that's roughly 46% less per gigabyte.
The best deal for the Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) is $22.99 at Newegg, while the SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G starts at $21.30 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G and Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) product page for detailed specifications and price history.
Frequently Asked Questions
Is SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G or Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) a better deal?
As of July 2026, Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) offers better value at $0.1796//GB compared to SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G at $0.3328//GB. That is approximately 46% better value per gigabyte.
What is the price per GB of SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G?
The SanDisk 64GB SD 64G SDXC Ultra 48MB/s 320X Flash card UHS C10 SDSDUNB-064G is currently priced at $0.3328/GB ($21.30 for 64GB) at Newegg.
Where can I buy Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) for the cheapest price?
The cheapest price for the Silicon Power 128GB Elite SDXC UHS-I/U1 Class 10 Memory Card, Speed Up to 85MB/s (SP128GBSDXAU1V10) is $22.99 at Newegg, which works out to $0.1796/GB.