Review on 32GB TF Memory Card with Adapter - BOYMXU High Speed U3 Memory Card Up to 90MB/s, Class 10 for Phone, Camera, Computer (RED) by Jason Hayes

because there is a lot of space on the memory card (in terms of reading and writing files), so I moved 713 MB folders to the memory card and timed, then copied back to your computer. The files in the folder were mostly photos and PDF documents. Writing a 713MB file to the card took about 75 seconds at an average transfer rate of 9.5MB/s. It had faster spikes and seemed to average 8-15MB/s during the transfer, although a few files got stuck (or my 2 year old laptop got stuck, it's hard to tell which ones) and the average speed dropped. To move the folder back, it took 23 seconds to read 713MB at a read speed of 31MB/s. The description of this card claims 20 MB/s write speed and 80 MB/s read speed. these speeds. I started migrating a 16GB folder for a CAD program. I'll have to see if the average speeds differ, but I didn't have the patience to see what the total time for that would be. After about 45 seconds, the sustained write speed (according to Windows) fluctuated again between 10 and 20 MB/s, so maybe a little faster than the first test, but not by much. This map will work to work well. for my use and the price can't be beat, hence I'm only deducting 1 star for the overly optimistic read/write speeds. average speeds would be different, but I didn't have the patience to see what the total time for that would be. After about 45 seconds, the sustained write speed (according to Windows) fluctuated again between 10 and 20 MB/s, so maybe a little faster than the first test, but not by much. This map will work to work well. for my use and the price can't be beat, so I'm only deducting 1 star for the overly optimistic read/write speeds. average speeds would be different, but I didn't have the patience to see what the total time for that would be. After about 45 seconds, the sustained write speed (according to Windows) fluctuated again between 10 and 20 MB/s, so maybe a little faster than the first test, but not by much. This map will work to work well. for my use and the price can't be beat, so I'm only deducting 1 star for the overly optimistic read/write speeds.