The Nintendo Switch 2 is here, and that means a whole lot more people will eventually need a new microSD card. While the new console comes with 256GB of built-in storage - eight times more than the original Switch and four times more than the Switch OLED - its improved performance means that some games will chew up a ton of that space. Cyberpunk 2077is a 59GB download, for example, while Split Fictionchecks in at 69GB. Other titles aren't nearly as big (particularly those made by Nintendo itself), but chances are you'll want to add more room at some point down the road. Whenever that is, you'll need a microSD Express card. This is not the same as the old reliable microSD cards you may have bought for the first Switch or other gaming handhelds - they're newer, faster and far more expensive. But if you want more space, they're your only choice. If you're looking to grab one today, we've laid out the best microSD cards for the Switch 2 and broken down what you should know before you buy. The best microSD cards for the Switch 2 (aren't all that important) Jeff Dunn for Engadget The Switch 2 is the first mainstream device to require microSD Express for storage expansion, so there aren't many options available to buy just yet. Of the six compatible models we've seen thus far, we've tested five: the SanDisk microSD Express Card, the Lexar Play Pro, the Samsung microSD Card for Nintendo Switch 2, the PNY microSD Express Card and the GameStop Express microSD Card for Nintendo Switch 2. The first four are made by genuine storage manufacturers, while the GameStop card appears to be a rebadged version of another model. (This should be the case with another card sold by Walmart under its Onn sub-brand, which we hope to catch in stock before our next update.) We used the 256GB version of every card except for Lexar Play Pro, which was 1TB. After timing these microSD Express cards across a range of Switch 2 games, our advice is simple: Get whichever one is available for the lowest price in the capacity you want. They aren't identical, especially if you want to move a game to the card from the console's internal storage (or vice versa). But the differences in load times and overall performance within actual games are tough to notice unless you have a stopwatch handy. All five cards loaded up the digital version of Mario Kart World, for instance, between 18 and 20 seconds. Each loaded the first Grand Prix race in about 6.5 seconds. Getting to the start screen of Cyberpunk 2077took about 38 seconds in each case. Loading a save in a particularly asset-heavy area (Jig-Jig Street) then took between 26 and 29 seconds, depending on the card. With Fast Fusion, a smaller native Switch 2 game, the initial load always took six to seven seconds, while each card loaded the first championship race in roughly 4 seconds. It was a similar situation with the Switch 2 upgrade for The Legend of Zelda: Breath of the Wild (using a Switch 1 cartridge): Each card took just over six seconds to get to the start screen, between 19 and 20 seconds to load a save just before the final boss, about 16 seconds to fast travel between Kakariko Village and Korok Forest, and so on. We saw no significant issues with in-game loads when playing each game, either. The SanDisk microSD Express Card and Lexar Play Pro. Jeff Dunn for Engadget All of this suggests that the Switch 2 has a relatively specific target for these cards to hit, and that there may not be much room for one model to leap too far out in front of the others. We'll also note that the console's built-in storage was consistently faster than any external option: The gap wasn't always big, but no card truly outpaced it in any of our tests. Loading that demanding area in Cyberpunk, for example, took about 22.5 seconds on average. So if you want the absolute fastest load times, don't put your game on a card at all. If you need the mental comfort of knowing you technicallyhave the best card available, get the SanDisk microSD Express Card. It had no outliers across our many game loading tests, and it was consistently right near the top when it came to moving games to and from system storage, which means it offers strong sequential read and write performance. Benchmark testing on PC with tools like CrystalDiskMark backed this up, as noted in our broader microSD card buying guide. Putting Mario Kart (a 21.9GB file) on that card took four minutes and 39 seconds on average, which was only second to the Lexar Play Pro by six seconds. It was the fastest to write Fast Fusion (3.5GB), taking an average of 27 seconds across three runs. Only PNY's card was faster to move games back to the console's storage, but that one was far slower at writing games to the card - getting Mario Kart on there took seven minutes and 11 seconds on average. Just note that the 128GB version of SanDisk's card has slower sequential writes than the larger versions, including much slower sustained write speeds (100 MB/s vs 210-220 MB/s). So transferring a game to that particular model will take much longer. Practically speaking, though, speed differences aren't as important in this case as having lots of space to hold games at a price you can live with. To make things easy, we've listed every Express card we've seen at retailers at the time of writing below. Remember: You want microSD Express, not Extreme," like the branding SanDisk uses for some conventional microSD cards. A microSD Express card will have a big EX" logo printed on it. 128GB