you don't see this as a form factor often, but if you look at your NVMe M.2. slot on your motherboard, you'll notice positions for 4, 8, and 10cm. This one would be the smallest one, 4cm.... ADATA IM2P3014 is a M.2 2242 form factor NVMe SSD
Hmm, i need something bigger than 512 MB, for my GPD Win2 handheld with this format.. nobody except some nonames make 1TB disks..
Well i have very bad experience with some SD card performance, but maybe it depends on readers and some adapters. Could be such card, at least fast as HDD?
Oh yeah easily - modern SD cards can handily outperform read speeds of HDDs, not sure about write speeds but they're still pretty good. They're nowhere near as fast as a full-blown SSD but a UHS-III card can record 4K @ 120FPS. Since they're typically used for media creation, those are some good specs. Just be sure your device is compatible.
Modern SD cards can be very fast but be aware that there are multiple standards for connectivity ! The UHS-II cards have extra pins !!! Not every reader has the feature, meaning they will fall back to the slower sub 90 MB/s speed. A proper reader can read a good UHS-II card at 300 MB/s and write at about 150-170 MB. Random access is rather slow, so don't use SD cards of any kind to do intensive work... but just for launching stuff from them it's enough Source: I have such devices for my photo-videography.
