Eyfinity from AMD but it's a combination of both. You need a GPU that will support multi-monitors and a PSU that can power all the above mentioned hardware. Check out the link and the videos they have.
Yes, there is software that does stretch images across multiple screens. UltraMon, Display Fusion and MultiMon are just a few. Some are free, others are trial versions but most you have to pay for.
System Manufacturer/Model Number Custom built OS Windows 7 Ultimate 64 bit CPU AMD Phenom II X4 940 Black Edition Motherboard Asus M4N78 Pro Memory GSkill 4 X 2 GB PC 8500 Graphics Card XFX Radeon HD 6790 D Sound Card On board VIA High Definition Audio Monitor(s) Displays Dual monitors:Samsung SyncMaster S20B300 Screen Resolution 1600 X 900
Keyboard Logitech G510 Mouse Razor DeathAdder PSU Ultra X4 750 watt fully modular Case Thermaltake Overseer RX 1 full tower Cooling Core-Contact 92 mm CPU Cooler Hard Drives Seagate Barracuda 1TB (primary)
Seagate Barracuda 2 X 320 GB Internet Speed 50/5 Mbps UL/DL Other Info Optical: Super Muliti DVD burner w/lightscribe, Hauppauge WinTV HVR-1800
Thanks. The Eyefinity looks good, but, sadly, I have an Nvidia graphics card, so it will not work. Also, those other software solutions look different from what I want. Is there a feature for one of them that allows full screen (multi-monitor) support (for video)?