Seagate Desktop HDD 120GB HDD, 120 GB, 7200 RPM, 2 MB, 3.5", Ultra-ATA/100 Seagate Desktop HDD 120GB HDD. HDD capacity: 120 GB, HDD speed: 7200 RPM, Storage drive buffer size: 2 MB, HDD size: 3.5", Interface: Ultra-ATA/100 https://www.storagereview.com/articles/200210/20021014ST3120023A_1.html Seagates Barracuda ATA IV offered decent performance coupled with previously unheard of lows in noise. What kind of improvements does the fifth-generation Cuda ATA offer?