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What is an Mipmapping?

Asked by Venkat Kurre in Computers & Technology at 7:37 AM on January 10, 2009

deepakshrma's Answer

This refers to the use of images of differing resolutions depending on the perspective distance between the user and the object in a graphical scene. At close range, the image is used at high resolution to reveal all detail, but as the distance increases, since detail is no longer important, a low-resolution version of the image is used. Doing so saves on resources and doesn’t affect the visual quality of the creation. A mipmap is a table that contains the different versions of the various images used in the scene.

Answered at 8:00 AM on January 10, 2009

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What is an Memory Clock?

Asked by Venkat Kurre in Computers & Technology at 7:38 AM on January 10, 2009

deepakshrma's Answer

This refers to the operating frequency of the graphics RAM on the graphics card. Depending on the type of RAM used, the effective and actual frequencies vary. In case of DDR2 and GDDR3 RAM, the effective speeds are twice the actual speeds, since the RAM outputs data twice during every clock cycle.

Answered at 7:59 AM on January 10, 2009

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What is an GPU and full form?

Asked by Venkat Kurre in Computers & Technology at 7:40 AM on January 10, 2009

deepakshrma's Answer

The Graphical Processing Unit is the computing core of a graphics card. These chips are designed to perform computations on graphical data much more efficiently than can CPUs. Modern GPUs are more complex than CPUs, if transistor count be considered. One of the fastest GPUs today, the GeForce 8800 GTX, has 754 million transistors, while the fastest CPU, the quad-core Intel Core 2 Quad, has 820 million transistors (including the 24 MB of L2 cache memory). GPUs can be subdivided into different areas specialising in a particular operation. The major sub-units are the Stream Processors, TMU, and ROP. Newer GPUs are released quicker than CPUs. The major manufacturers of GPUs are NVIDIA (the makers of the GeForce series) and ATI (the makers of the Radeon series).

Answered at 7:56 AM on January 10, 2009

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What is an Memory Bus Width?

Asked by Venkat Kurre in Computers & Technology at 7:38 AM on January 10, 2009

deepakshrma's Answer

The width of the pathway between the Graphics RAM and the core is called the Memory Bus Width. The wider the pathway, the faster the data can be processed.

Answered at 7:59 AM on January 10, 2009

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What is an HDR and Full Form of HDR?

Asked by Venkat Kurre in Computers & Technology at 7:39 AM on January 10, 2009

deepakshrma's Answer

High Dynamic Range is a relatively new display concept, only implemented in the latest GPUs. It refers to the range of lighting in which the detail of an image is preserved. Normally, visual elements that are too dark or too bright, for example areas that are overshadowed, are not displayed with the same amount of detail as well-lit areas. Doing so saves resources since in any case the detail in these areas are not noticeable to the eye. But in HDR mode, even these details become noticeable. Rendering in HDR requires higher computational power, which has become possible with the latest graphics cards.

Answered at 7:58 AM on January 10, 2009

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What is an Graphics Memory?

Asked by Venkat Kurre in Computers & Technology at 7:39 AM on January 10, 2009

deepakshrma's Answer

Memory types used as system RAM can also be used for graphics cards in most cases. But high-end cards require memory faster than system RAM. GDDR2 was the first such special-purpose RAM used for graphics cards. The technology behind GDDR2 was different from that which powered DDR2, which was later introduced as system RAM. GDDR3, a creation of ATI, seen in many present graphics cards, uses a technology distinct from that of DDR3, which is used in high-end computers. The latest graphics cards using GDDR4 also have a presence in the market.

Answered at 7:57 AM on January 10, 2009

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What is an FPS?

Asked by Venkat Kurre in Computers & Technology at 7:43 AM on January 10, 2009

deepakshrma's Answer

A Frame is a static image created by rendering. To give an illusion of motion, many frames are constantly rendered. Frames per second (fps) is a measure of the rendering speed. A higher frames per-second rate of rendering ensures (an illusion of) smoother movement. This is also a measure of the computational abilities of a graphics card.

Answered at 7:54 AM on January 10, 2009

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What is an GPGPU?

Asked by Venkat Kurre in Computers & Technology at 7:40 AM on January 10, 2009

deepakshrma's Answer

General Purpose GPUs refer to those GPUs that can also be used to perform non-graphics work. GPUs have increased in computational prowess to such an extent that they are capable of overtaking most CPUs in their ability to manage numerical— specifically decimal— data, which forms the bulk of graphics data that they are specially designed for. The GPGPU concept seeks to utilise this power of the GPU to perform general tasks that are heavy on number crunching, like weather simulations and space data manipulation. The fact that newer cards are increasingly programmable, allowing the developer to use them for custom purposes, helps the cause.

Answered at 7:55 AM on January 10, 2009

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What is an Dual Display?

Asked by Venkat Kurre in Computers & Technology at 7:45 AM on January 10, 2009

deepakshrma's Answer

This is a feature of graphics cards that can power two monitors at the same time. In the case of analogue monitors, the graphics card will require two RAMDACs. In case of LCD monitors, two DVI ports are needed. The output image can be split across these monitors, creating one large image.

Answered at 7:52 AM on January 10, 2009

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What is an Frame Buffer?

Asked by Venkat Kurre in Computers & Technology at 7:41 AM on January 10, 2009

deepakshrma's Answer

A buffer is a temporary storage area. The Frame Buffer refers to the RAM on the graphics card that is used to store the frames that have already been rendered by the GPU.

Answered at 7:53 AM on January 10, 2009

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