Samsung Evo Cards use TLC nands, but they are definitely better than the other’ Value’ choices in the price bracket. According to A1 SD Bench it gives 27 MB read speed and 17.5 MB write speed inside my phone. Which is more than enough. This card is built to withstand elements. If you want exceptional performance, like faster gallery loading times, look at Samsung PRO line up, as they offer excellent Value for Money.