. Have found some decently fast memory sticks but pricey as the GBs go up. I have a USB 3.0 stick that does about 50MB/sec write and 80MB/sec read on USB 3 but its only 64GB, USB 2.0 hdd should do about 30MB/sec usually and vastly better price per GB. All depends on the memory stick you get, i find most usb 3.0 ones don't do claimed speed and are no better than 2.0