The Fastest 512GB microsd Express Cards for Nintendo Switch 2

Published at : 23 Dec 2025

In this video I compare five of the most popular 512GB microSD Express memory cards for the Nintendo Switch 2. I’ll be comparing: Game load times, copy times, actual usable storage capacity, and the country of manufacture and ownership.

Amazon Links
👉 PNY: https://amzn.to/4pTg7ir
SanDisk: https://amzn.to/48pazFf
Samsung: https://amzn.to/486y6f2
Lexar: https://amzn.to/3JYdfBz
Transcend: https://amzn.to/4pqUbus

My blog article comparing all the above cards:
https://www.memorywolf.com/blogs/reviews/fastest-512gb-microsd-express-cards-nintendo-switch-2

Usable Storage Capacity Explained (GB vs GiB)
GB (used for marketing by storage manufacturers) is the metric style of measurement where 1GB = 1000³ bytes. Then you have GiB which is the binary method; 1GiB = 1024³ bytes. The binary method is what is used in computers like the Switch 2. So 1GB is effectively 0.93 GiB, or 512GB is effectively 476GiB. There is often some other overheads as well, such as the file system. If the Switch 2 and card manufacturers displayed both a GB and a GiB value there might not much so much confusion, or they simply used the same method of measurement.

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