1. 1TB SanDisk Ultra from Best Buy . SanDisk Ultra PLUS 1TB microSDXC UHS-I Memory Card ($98 vs $143). Best Black Friday Steam Deck Video Game Deals9. Hades The wide availability of the EVO Plus helps its position as the best overall SD card for Steam Deck because you can buy it practically anywhere. It's available in 64GB, 128GB, 256GB, and 512GB My understanding is the only difference (when it comes to Steam Deck usage) between the cheaper SanDisk Ultra and the more expensive SanDisk Extreme are their write speeds—their read speeds both cap at just slightly under 90MB/s. So playing games from the Ultra vs Extreme microSDs will be a near identical experience? SanDisk 1TB Ultra microSDXC UHS-I Memory Card with Adapter - Up to 150MB/s, C10, U1, Full HD, A1, MicroSD Card - SDSQUAC-1T00-GN6MA Visit the SanDisk Store 4.7 4.7 out of 5 stars 38,732 ratings SanDisk 400GB Ultra microSDXC UHS-I Memory Card with Adapter - 120MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUA4-400G-GN6MA Visit the SanDisk Store 4.7 4.7 out of 5 stars 369,405 ratings The Extreme is enough. The Steam Deck (Linux, specifically) cannot currently take full advantage of all the speed and performance of the Extreme, let alone the Extreme Pro. But it can utilize it enough to see significant improvements over an A1 card. The Sandisk extreme is generally on the top of the list cause they say it makes loading times faster and the pro gets closer to that than the evo. auqustfire. •. I have 2 Samsung Evo cards and they work great. I'm also cheap, tho, so I mean, if the Pro seems like a better deal to you, then go ahead. It's not like it'll run worse. The Sandisk Ultra was U1/A1. Looking at it, it doesn't have the V specification. The Sandisk Extreme is U3/A2/V30. I created (using a shell) a file of 10G from /dev/random and then copied it. The 512G drive (stock) got 150MB/s write and the Sandisk Extreme got 79.5 MB/s. Interestingly, my workstation (while testing it) only sustained 74 MB/s. 2axhiSB.