Why A Graphics Card?
The advantage a graphic card gives your computer is that the processing of all graphics is moved off the motherboard
. Many motherboards these days have a built in graphics card which is sufficient for web-browsing low end graphics requirement. However more complex image/video rendering requires more graphic processing capability for which a graphics card is must
The Graphics Processing Unit (GPU is very much like the computer's CPU except that is optimized for the mathematical operations commonly seen while processing graphics. This optimization is the main difference between many GPUs on the market. To be honest, only the most demanding graphics needs would require you to pay much attention to these differences. Simply having the graphics processed in a GPU which has been optimized at all will most likely give you all that is needed.
Another element required by graphics cards is memory. The GPU uses this memory to temporarily store information it needs to process the graphics in an efficient manner. This memory can also be used as a buffer to store images which need to be displayed soon..
Most of today's graphic cards also have DVI output slots which are used to connect to an LCD monitor. It is also common to see additional output slots such as S-Video, component video, or HDMI. These additional slots can be convenient if you want to use a TV as a monitor or a projector.
Where to buy it from?
With e-commerce picking up in India, a number of these websites have been selling graphics card at affordable rates. My recommendation Site is: www.ratetorate.in : I found this website recently while looking for graphics cards. They have an amazing range of graphics cards. Since they are directly from NehruPlace ,prices look very updated. A computer hardware only website from Nehru place was much needed and this website fills this gap. They have a store in Nehru Place and have most exclusive collection in this space including all brands like Palit,eVGA,Zotac,Sapphire,HIS,Powercolor etc. I have shopped with them and liked the overall shopping experience.
Components
GPU This is the graphics processing unit, the chip at the heart of the graphics card. Many cards use the same GPU but partner it with different components and at different clockspeeds to produce slower or faster graphics cards.
CUDA Compute Unified Device Architecture is a coding language Nvidia invented to allow parallel computing on its range of GPUs. From its 8 series upwards all its cards can use CUDA to speed up parallel processing applications, such as video encoding, faster than your computer's CPU.
ROPs The Render Output unit comes into play during the final stages in the rendering process, bringing together the data from each of the memory buffers in the graphics card's local memory. The more it is, the better.
PCB The Printed Circuit Board is the physical board that graphics cards (and all other micro-electronics) have their components attached to. The boards are printed with conductive pathways between the relevant components instead of using physical wires
PhysX Originally an accelerator chip and software layer from the small company Ageia, Nvidia bought up PhysX and has now applied it to its GPUs, again from the 8 series forward. It allows for more advanced physics simulations, such as liquid or cloth, in games that have been coded with the PhysX software included.
Crossfire and SLI These are the relevant multi-GPU configurations from both AMD and Nvidia. Both allow multiple graphics cards to be connected together to increase the rendering performance. Historically this has been fraught with driver issues and diminishing returns for the extra cards, but as the latest cards have been released we are getting closer to doubling the performance by adding in a second card.
DirectX Microsoft's DirectX is a collection of its own proprietary APIs (application programming interfaces) for dealing with multimedia tasks on its own operating systems. The Direct3D part is specifically to do with 3D graphics and utilises hardware acceleration if there is a GPU in place to take advantage of it.
by: Swapan
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