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 for single cable connection to your surround sound decoder UAA Universal Audio Architecture design ensures maximum compatibility under Windows Vista 7 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 sound 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.