Transcend launches the USD230I, a range of microSD cards with support for pseudo-SLC caching to boost burst write speeds. The company claims the cards offer data transfer speeds of up to 100MB/s, while random read/write reaches 3400 IOPS.
The cards carry both A1 and V3 badges, meaning they can be used to install Google Android applications with a minimum write speed of up to 30MB/s, or good enough for 4K video shooting. First introduced back in 2017, so far pseudo-SLC caching has not been used in other memory cards. The USD230I range uses 3D TLC NAND memory, necessitating the need for pSLC caching to boost writing performance.