Kingston recently announced the availability of their 64GB Class 10 microSDXC memory card. After reading the press release, it got me thinking: how many memory manufacturers make a 64GB Class 10 microSD card? A quick search on Newegg turned up just one. With Kingston’s hat in the ring, now there’s two. 64GB is enormous for small devices, like smartphones and tablets. The storage advantages are pretty obvious, but I took a look at the Kingston 64GB microSDXC card for performance as well. The results were pretty impressive.