Bests & Worsts Reviews from Amazon

I tested this with a sandisk extreme 16gb, 60MB/s card. used a 5.8 GB picture folder, with many jpeg and raw files in it. The computer is an i7 2600K. write speed to card burst at 55mb/sec, and sustains at around 45 mb/sec. Much more importantly, read speed off the card bursts at 95 mb/sec, and sustains above 70 MB/sec for the entire 5 gig. for comparison, my sandisk extreme usb card reader, peaks read at around 25 mb/sec from same card. so this thing is easily 3 times as fast. I tested the reading in to an SSD card to make sure the bottle neck is my memory card and not the write speed of hard drive. I also have no issues with this card hanging the computer up during boot.