The 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 costs $0.4746/GB while the KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops costs $0.0996/GB. KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops offers 79% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 vs KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops — Which Is Better Value?
Specification Comparison
| Spec | 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 | KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops |
|---|---|---|
| Brand | ADATA | KingSpec |
| Capacity | 256GB | 512 GB |
| $/GB | $0.4746 | $0.0996 |
| Price | $121.49 | $50.99 |
| Retailer | Newegg | Amazon |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | nvme | ssd |
Price Across Retailers
256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0
KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops
Which Should You Buy?
Based on current pricing data, the KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops offers better value at $0.0996//GB compared to the 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 at $0.4746//GB — that's roughly 79% less per gigabyte.
The best deal for the KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops is $50.99 at Amazon, while the 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 starts at $121.49 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 and KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops product page for detailed specifications and price history.
Frequently Asked Questions
Is 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 or KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops a better deal?
As of May 2026, KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops offers better value at $0.0996//GB compared to 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 at $0.4746//GB. That is approximately 79% better value per gigabyte.
What is the price per GB of 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0?
The 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 is currently priced at $0.4746/GB ($121.49 for 256GB) at Newegg.
Where can I buy KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops for the cheapest price?
The cheapest price for the KingSpec MemoStone 512GB External SSD, USB 3.2 Gen2 Dual Type A/C Interface - Up to 540MB/s, Portable Solid State Drive Perfectly Compatible with Smartphones/Laptops/Tablets/Desktops is $50.99 at Amazon, which works out to $0.0996/GB.