Your device needs to support this for it to work with a microSDXC card. When we talk about microSD cards today, we usually refer to cards that use the microSDXC (eXtended Capacity) standard, which have a capacity between 32GB and 2TB. SanDisk says its 128GB Extreme card delivers sequential write speeds up to 90 MB/s, for example, while the higher-capacity models in the same line offer up to 130 MB/s. Note that a microSD card’s performance may differ depending on what capacity you buy.
There’s a starker increase when you go up to 1TB cards, which typically cost around $100. These days, you can find a decent 128GB card for around $15 or less, a decent 256GB card for less than $30 and ( with sales) a decent 512GB card could be as little as $40 (though most cost closer to $50 or $60). But if you need more room – say, for stashing a bunch of games on a Steam Deck – a 512GB card could make more sense and often provides a better cost-per-GB ratio. For most, a 128GB or 256GB model should be the sweet spot between price and capacity.