The SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) costs $0.3984/GB while the SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN costs $0.2030/GB. SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN offers 49% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) vs SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN — Which Is Better Value?
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Specification Comparison
| Spec | SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) | SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN |
|---|---|---|
| Brand | SanDisk | SanDisk |
| Capacity | 64 GB | 128 GB |
| $/GB | $0.3984 | $0.2030 |
| Price | $25.50 | $25.99 |
| Retailer | Amazon | Amazon |
| Category | SD Cards | SD Cards |
| Subcategory | sd | micro-sd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN offers better value at $0.2030//GB compared to the SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) at $0.3984//GB — that's roughly 49% less per gigabyte.
The best deal for the SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN is $25.99 at Amazon, while the SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) starts at $25.50 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) and SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN product page for detailed specifications and price history.
Frequently Asked Questions
Is SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) or SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN a better deal?
As of August 2026, SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN offers better value at $0.2030//GB compared to SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) at $0.3984//GB. That is approximately 49% better value per gigabyte.
What is the price per GB of SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN)?
The SanDisk Ultra 64GB Class 10 SDXC UHS-I Memory Card up to 80MB/s (SDSDUNC-064G-GN6IN) is currently priced at $0.3984/GB ($25.50 for 64 GB) at Amazon.
Where can I buy SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN for the cheapest price?
The cheapest price for the SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN is $25.99 at Amazon, which works out to $0.2030/GB.