The SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) costs $0.1953/GB while the Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card costs $1.1914/GB. SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) offers 84% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) vs Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card — Which Is Better Value?
Specification Comparison
| Spec | SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) | Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card |
|---|---|---|
| Brand | SanDisk | Lexar |
| Capacity | 512GB | 512GB |
| $/GB | $0.1953 | $1.1914 |
| Price | $99.99 | $609.99 |
| Retailer | Newegg | Newegg |
| Category | SD Cards | SD Cards |
| Subcategory | micro-sd | sd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) offers better value at $0.1953//GB compared to the Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card at $1.1914//GB — that's roughly 84% less per gigabyte.
The best deal for the SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) is $99.99 at Newegg, while the Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card starts at $609.99 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 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) and Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card product page for detailed specifications and price history.
Frequently Asked Questions
Is SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) or Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card a better deal?
As of July 2026, SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) offers better value at $0.1953//GB compared to Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card at $1.1914//GB. That is approximately 84% better value per gigabyte.
What is the price per GB of SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA)?
The SanDisk 512GB Extreme microSDXC UHS-I/U3 A2 Micro SD Card with Adapter, Speed Up to 190MB/s (SDSQXAV-512G-GN6MA) is currently priced at $0.1953/GB ($99.99 for 512GB) at Newegg.
Where can I buy Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card for the cheapest price?
The cheapest price for the Lexar Diamond Series Professional 512GB CFexpress 4.0 Type-B Memory Card is $609.99 at Newegg, which works out to $1.1914/GB.