1MB/s download speed = 60MB/minute Divide 1,000MB ( 1GB ) by 60/MB and you get 17 minutes for 1GB of download. 17*5 ( 5GB game ) = 83 minutes. 83 minutes = 1 hour and 23 minutes. So if you are at a constant 1MB/s download speed, it should take you 1 hour and 23 minutes to download 5GB. simple math.