I have 2 PCs and 3 monitors and a laptop, all currently have 2 x 1TB hard drives to the brink full with movies about less 20gb on each, they both still copy at about average 90-100MB/s to and from any of my other hard drives. and now getting close to filling my third with 200GB left and about 600GB left on my fourth and 300GB left on my 500GB hdd, they all run really fast even when almost completely full. Not the laptop though, it's standard.