Just to give you an idea, I am running a 2.80Ghz Dual Core on 4GB DDR3 and Windows 7 Professional 64bit.
This device is really easy to install. It does help if you download the Soundblaster drivers from their website (related to the X-FI Pro of course), else youll get imbecilles morons writing negative reviews on here complaining about the poor sound quality!
Just plug to the an available USB port on your Laptop. Theres no need to disable your previous soundcard settings (unless you really want to), because once X-FI is plugged out of the USB & no longer to use, you can easily revert back to your built-in soundcard settings.
The XFI Pro is miles better than my legacy soundcard/chip inside my laptop. Great for audio editing (e.g. on Wavelab, or Adobe Audition), and playback. Im so pleased to have the "What U Hear" functionality back again! Sound quality is exceptional. Creative Labs has never let me down (expept once in 1999, when their Soundblaster Live wasnt not fully compatible with my Cyrix Processor, but that was a tiny little blip)! Highly recommended for those using laptops. If youre on a desktop, I advise to buy a PCI-E sound card & not this.
The box is prone to electrical noise, but the simple reason is because a jack is incorrectly plugged in, so give it a firm push and the noise will disappear.