SanDisk has unveiled the biggest SD card in the world — a prototype card with an outrageous 1 terabyte of memory. The SDXC card is only a prototype at this point, with no details available on price or release date, but it's still an impressive milestone. As SanDisk owners Western Digital points out, it was only 16 years ago that the company introduced its first 64 megabyte SD card, while two years ago they debuted the 512GB card, which was then the world's biggest. Things have moved fast, though, and compared to the 64MB card, today's 1TB version offers 16,384 times more storage.

The company says the 1TB card is necessary to match the increasing demand for memory-heavy formats, including 4K and 8K footage, 360-degree video and VR. However, there will be some downsides. The 1TB card is certain to be prohibitively expensive, and at such a large capacity, read and write speeds are going to be comparatively slow. Plus, if you're working with a 1TB card there's always the danger you'll have too much space and forget to ever switch cards. Now imagine the anguish if your 1TB card corrupts and you lose everything on it...