The SanDisk 64GB Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s costs $0.4609/GB while the SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN costs $0.2074/GB. SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN offers 55% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk 64GB Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s 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 64GB Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s | SanDisk 128GB Ultra microSDXC UHS-I Class 10 Memory Card 100 MB/s SDSQUNR-128G-GN6MN |
|---|---|---|
| Brand | SanDisk | SanDisk |
| Capacity | 64GB | 128 GB |
| $/GB | $0.4609 | $0.2074 |
| Price | $29.50 | $26.55 |
| Retailer | Newegg | Amazon |
| 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 Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s at $0.4609//GB — that's roughly 55% 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 Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s starts at $29.50 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 Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s 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 64GB Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s 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 $0.2074//GB compared to SanDisk 64GB Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s at $0.4609//GB. That is approximately 55% better value per gigabyte.
What is the price per GB of SanDisk 64GB Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s?
The SanDisk 64GB Micro SD SDXC MicroSD TF Class 10 64G 64 GB Mobile Ultra 80MB/s is currently priced at $0.4609/GB ($29.50 for 64GB) at Newegg.
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 $26.55 at Amazon, which works out to $0.2074/GB.