The Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card costs $0.8125/GB while the SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) costs $0.1878/GB. SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) offers 77% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card vs SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) — Which Is Better Value?
Specification Comparison
| Spec | Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card | SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) |
|---|---|---|
| Brand | Lexar | SanDisk |
| Capacity | 640GB | 512GB |
| $/GB | $0.8125 | $0.1878 |
| Price | $519.99 | $96.15 |
| Retailer | Newegg | Newegg |
| Category | SD Cards | SD Cards |
| Subcategory | sd | micro-sd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) offers better value at $0.1878//GB compared to the Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card at $0.8125//GB — that's roughly 77% less per gigabyte.
The best deal for the SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) is $96.15 at Newegg, while the Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card starts at $519.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card and SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) product page for detailed specifications and price history.
Frequently Asked Questions
Is Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card or SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) a better deal?
As of June 2026, SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) offers better value at $0.1878//GB compared to Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card at $0.8125//GB. That is approximately 77% better value per gigabyte.
What is the price per GB of Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card?
The Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A Memory Card is currently priced at $0.8125/GB ($519.99 for 640GB) at Newegg.
Where can I buy SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) for the cheapest price?
The cheapest price for the SanDisk 512GB Ultra microSDXC A1 UHS-I/U1 Class 10 Memory Card with Adapter, Speed Up to 150MB/s (SDSQUAC-512G-GN6MA) is $96.15 at Newegg, which works out to $0.1878/GB.