128gb vs 256gb SD Cards
Side-by-side price per gigabyte comparison across 2 products.
As of March 2026, 128gb averages $0.7891/GB across 1 products while 256gb averages $0.2371/GB across 1 products on BuyPerUnit. 256gb offers 70% better value per gigabyte for sd cards.
128gb
256gb
Better ValueTop Products Compared
| Rank | Brand | Product | Capacity | $/GB | Price | Retailer |
|---|---|---|---|---|---|---|
| 1 | 128gb | 128gb Sdxc Class10 Uhs-i Card | 128GB | $0.7891 | $101.01 | newegg |
| 1 | 256gb | 256GB microSDXC UHS-I Memory Card | 256GB | $0.2371 | $60.71 | newegg |
Which Should You Buy?
Based on current pricing data, 256gb offers better overall value for sd cards at an average of $0.2371/GB compared to 128gb's $0.7891/GB — that's roughly 70% less per gigabyte.
256gb's best deal is the 256GB microSDXC UHS-I Memory Card (256GB) at $0.2371/GB, while 128gb's cheapest option is the 128gb Sdxc Class10 Uhs-i Card (128GB) at $0.7891/GB.
However, price per GB isn't everything — consider factors like warranty, performance specs, and your specific capacity needs. Check individual product pages for detailed specifications.
Frequently Asked Questions
Is 128gb or 256gb cheaper per GB for sd cards?
As of March 2026, 256gb averages $0.2371/GB compared to 128gb at $0.7891/GB. 256gb is approximately 70% cheaper per gigabyte on average.
How many 128gb and 256gb sd cards does BuyPerUnit track?
BuyPerUnit currently tracks 1 128gb products and 1 256gb products in the sd cards category, all ranked by price per gigabyte.
What is the cheapest 128gb sd card per GB?
The cheapest 128gb option is the 128gb Sdxc Class10 Uhs-i Card at $0.7891/GB ($101.01 for 128GB).
What is the cheapest 256gb sd card per GB?
The cheapest 256gb option is the 256GB microSDXC UHS-I Memory Card at $0.2371/GB ($60.71 for 256GB).