The Nintendo Switch 2 launched with 256GB of onboard storage, which sounds generous until you start downloading the games that actually push the hardware. Right now, Walmart has the Onn 512GB Micro SDXC Express Card listed at $84.77 with free shipping, and that price is meaningfully lower than anywhere else currently stocking it.
For context: this card is Nintendo Switch 2 compatible and rated at up to 800MB/s write and 600MB/s read speeds. That matters because the Switch 2 only accepts MicroSD Express cards, not the standard MicroSD cards that worked in the original Switch. The two formats look nearly identical, so if you're still holding onto an old card from your previous console, it will not work.
Why 512GB makes more sense than 256GB right now
The storage math on Switch 2 has gotten uncomfortable fast. Final Fantasy VII Remake Intergrade alone demands between 90 and 100GB. Split Fiction sits at around 70GB. Cyberpunk 2077 takes up roughly 60GB, and Hyrule Warriors: Age of Imprisonment lands at 44GB. Download three or four of those and the 256GB internal drive is already full, before you account for any smaller titles, updates, or save data.
A 512GB MicroSD Express card triples the Switch 2's total available storage capacity. The 256GB versions of this card saw solid discounts during Prime Day, but the 512GB size mostly stayed above $100 throughout that window. The Walmart listing currently breaks that floor.
Party games add up too. Super Mario Party Jamboree: Nintendo Switch 2 Edition + Jamboree TV is a title that Switch 2 owners are likely keeping installed long-term given how much multiplayer mileage it offers, and keeping a rotating library of games without constantly managing storage is exactly the kind of quality-of-life upgrade this card provides.
The broader context on memory card pricing
MicroSD Express pricing has been elevated across the board since the Switch 2 launched. The format is newer and the supply chain hasn't fully caught up with demand, which has kept prices stubbornly high compared to standard MicroSD cards at equivalent capacities. Sales have been sporadic and rarely touch the 512GB tier.
The Onn card is Walmart's house brand, but the specs are legitimate for Switch 2 use. The Nintendo Switch 2 compatibility certification matters here since not every MicroSD Express card on the market has been tested and cleared for the console.
Stock on deals like this tends to move quickly, particularly when the price sits this far below the typical market rate. If you've been waiting for the right moment to expand your Switch 2 storage, the strategy guides and gaming resources you'll want to run alongside your growing library will be a lot more accessible when you're not constantly deciding which game to uninstall first.
For players building out a Switch 2 game library, keeping up with Super Mario Party Jamboree tips and strategies alongside bigger titles is exactly the kind of setup that makes the extra storage worthwhile over time.
