Graphics processing unit (GPU)
Video BIOS
Video memory
RAMDAC
Cooling devices
Power demand
Video Graphics Array (VGA)
Digital Visual Interface (DVI)
Video In Video Out (VIVO)
High-Definition Multimedia Interface (HDMI)
Display Port
Graphics processing unit (GPU) - A GPU is a dedicated processor optimized for accelerating graphics. The processor is designed specifically to perform floating-point calculations, which are fundamental to 3D graphics rendering. The main attributes of the GPU are the core clock frequency, which typically ranges from 250 MHz to 4 GHz and the number of pipelines, which translate a 3D image characterized by vertices and lines into a 2D image formed by pixels.
Video BIOS - The video BIOS or firmware contains the basic program that governs the video card's operations and provides the instructions that allow the computer and software to interact with the card.
Video memory - Since video memory needs to be accessed by the GPU and the display circuitry, it often uses special high speed or multi-port memory, such as VRAM, WRAM, SGRAM, etc.
RAMDAC - RAMDAC (Random Access Memory Digital-to-Analog Converter) converts digital signals to analog signals for use by a computer display that uses analog inputs such as CRT displays. Depending on the number of bits used and the RAMDAC data transfer rate, the converter will be able to support different computer display refresh rates.
Cooling devices - Video cards may use a lot of electricity, which is converted into heat. If the heat isn't dissipated, the video card could overheat and be damaged. Cooling devices are incorporated to transfer the heat elsewhere.
Power demand - As the processing power of video cards has increased, so has their demand for electrical power. Present fast video cards tend to consume a great deal of power. While CPU and power supply makers have recently moved toward higher efficiency, power demands of GPUs have continued to rise, so the video card may be the biggest electricity user in a computer.
OutPut Ports:
The most common connection systems between the video card and the computer display are:
1.Video Graphics Array (VGA) Analog-based standard adopted in the late 1980s designed for CRT displays. Some problems of this standard are electrical noise, image distortion and sampling error evaluating pixels.
2.Digital Visual Interface (DVI): Digital-based standard designed for displays such as flat-panel displays (LCDs, plasma screens, wide High-definition television displays) and video projectors. It avoids image distortion and electrical noise, corresponding each pixel from the computer to a display pixel, using its native resolution.
3.Video In Video Out (VIVO) includes to allow the connection with televisions, DVD players, video recorders and video game consoles.
4.High-Definition Multimedia Interface (HDMI): An advanced digital audio/video interconnect released in 2003, and is commonly used to connect game consoles and DVD players to a display. HDMI supports copy protection through HDCP.
5.Display Port: An advanced license and royalty-free digital audio/video interconnect released in 2007. Display Port intends to replace VGA and DVI for connecting a display to a computer.
Incoming Search Terms:
Graphics processing unit (GPU)
Video BIOS
Video memory
RAMDAC
Cooling devices
Power demand
Video Graphics Array (VGA)
Digital Visual Interface (DVI)
Video In Video Out (VIVO)
High-Definition Multimedia Interface (HDMI)
Display Port
