The SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN costs $0.2074/GB while the SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC costs $0.7148/GB. SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN offers 71% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN vs SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC — Which Is Better Value?
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Specification Comparison
| Spec | SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN | SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC |
|---|---|---|
| Brand | SanDisk | SanDisk |
| Capacity | 128 GB | 64GB |
| $/GB | $0.2074 | $0.7148 |
| Price | $26.55 | $45.75 |
| Retailer | Amazon | Newegg |
| Category | SD Cards | SD Cards |
| Subcategory | micro-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 $0.2074//GB compared to the SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC at $0.7148//GB — that's roughly 71% 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 $26.55 at Amazon, while the SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC starts at $45.75 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 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN and SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC product page for detailed specifications and price history.
Frequently Asked Questions
Is SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN or SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC 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 $0.2074//GB compared to SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC at $0.7148//GB. That is approximately 71% better value per gigabyte.
What is the price per GB of SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN?
The SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN is currently priced at $0.2074/GB ($26.55 for 128 GB) at Amazon.
Where can I buy SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC for the cheapest price?
The cheapest price for the SanDisk 64GB microSD Extreme Pro 170MB/s A2 4K UHS-I U3 64G micro SD microSDXC is $45.75 at Newegg, which works out to $0.7148/GB.