Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: BFG GeForce 7800 GS OC 256 MB GDDR3 AGP Graphics Card
Product description: Stuck with sagging performance on an old AGP system? Boost your video performance with the BFG Tech GeForce 7800 GS OC 256 MB DDR3 AGP video card!This high-end video card is powered by an NVIDIA GeForce 7800 GS GPU overclocked to 400 MHz and backed by 256 MB of GDDR3 memory with an AGP interface. The BFGS78256GSOC features DVI and VGA output options with S-Video TV-out, giving you a variety of display options.The BFGS78256GSOC features exclusive NVIDIA technologies like nView Multi-Display technology, PureVideo for stutter-free high-resolution video playback, as well as support for the leading gaming and application APIs like Microsoft DirectX 9 with Shader Model 3.0 and OpenGL 2.0. Get the best graphics your AGP system can handle, get your BFG Tech GeForce 7800 GS OC 256 MB DDR3 AGP video card today!Order now!
Product feature: Built for Microsoft Windows Vista NVIDIA's third-generation GPU architecture built for Windows Vista gives users the best possible experience with the 3D graphical user interface in the new operating system (OS) from Microsoft., Next-Generation Superscalar GPU ArchitectureDelivers up to 2x the shading power of previous generation products taking gaming performance to extreme levels., Full Microsoft DirectX 9.0 Shader Model 3.0 SupportThe standard for today's PCs and next-generation consoles enables stunning and complex effects for cinematic realism. NVIDIA GPUs offer the most complete implementation of the Shader Model 3.0 feature set, including vertex texture fetch (VTF), to ensure top-notch compatibility and performance for all DirectX 9 applications., NVIDIA CineFX 4.0 EngineDelivers advanced visual effects at unimaginable speeds. Full support for Microsoft DirectX 9.0 Shader Model 3.0 enabling stunning and complex special effects. Next-generation shader architecture with new texture unit design streamlines texture processing for faster and smoother gameplay., NVIDIA Intellisample 4.0 TechnologyThe industry's fastest antialiasing delivers ultra-realistic visuals, with no jagged edges, at lightning-fast speeds. Visual quality is taken to new heights through a new rotated grid sampling pattern, advanced 128 tap sample coverage, 16x anisotropic filtering, and support for transparent supersampling and multisampling.
Product brand: BFG Technologies
Target attributes: DVI Output Type
Answer: attribute: dvi output type
value: None
source: None