Sound Blaster X-Fi PCI Express chipset is designed for the latest PCs Hardware-accelerated EAX 5.0 & Open AL gaming for ultra-realistic cinematic in-game audio Creative ALchemy software restores EAX surround sound to Windows XP games under Windows Vista 7 Delivers accurate & immersive X-Fi CMSS-3D surround sound over headphones for on-line or late-night gaming sessions On-board optical IO with Dolby Digital real-time encoding UAA Universal Audio Architecture design ensures maximum compatibility under Windows Vista 724-bit Analogue-to-Digital conversion of analogue inputs at 96k Hz sample rate 24-bit Digital-to-Analogue conversion of digital sources at 96k Hz to analog 7.1 speaker output 24-bit Digital-to-Analogue conversion of stereo digital sources at 192k Hz to stereo output Power DVD software plays Dolby Digital or DTS movies in incredible surround sound over headphones or speakers THX certification assures high-fidelity results Low-latency ASIO drivers also make this card ideal for the music enthusiast Creatives Sound Blaster X-Fi Titanium is the essential audio upgrade for maximum PC gaming & entertainment. Whether you use Windows XP or Vista its PCI Express design guarantees total compatibility plus hardware-accelerated EAX 5.0 & Open AL support for maximum gaming performance. With X-Fi CMSS-3D for accurate & immersive 3D positional audio even over headphones this card will give you the edge over the competition THX certified it also features onboard Optical IO & real-time Dolby Digital encoding for single cable connectivity to your surround sound decoder. The supplied Power DVD software works with X-Fi technology to let you play Dolby & DTS movies in incredible surround sound over headphones or speakers.