Ahhh, finally Part 3...
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On a side note, the next generation cards from NVIDIA has something that the ATI next
generation cards don't have. This is called Pixel Shader 3.0. It will be implimented in
DirectX 9.0c, and improves image quality. Go here -
http://www20.graphics.tomshardware.com/ ... index.html - for a full
explanation.
You also need the DirectX software along with your graphics card. You can download the
newest version from Microsoft here -
http://www.microsoft.com/windows/directx/default.aspx. Installing newer versions of
DirectX will only affect your graphics if you have a card that supports it. For
example, if you had a graphics card that supports DirectX 8.1, and you run DirectX 9 so
you can play a new game that needs at least DirectX 9 to run, the game will run but you
will see no graphical improvements over DirectX 8.1. Either way, you should always run
the most up-to-date version of DirectX to ensure that all games will run on your
computer. So in theory, you can run DirectX 9 and DirectX 9 games on a DirectX 7 card
if you wanted, but don't expect anything great graphics-wise. Also, you don't need to
worry about old games not running with newer versions of DirectX. DirectX is designed
to be backwards compatible, meaning you can run DirectX 7 games with DirectX 9 if you
want.
Once you have decided on a particular card, for example a Radeon 9600 Pro, you will
realize that there are many manufacturers making cards based on the Radeon 9600 Pro
chipset, for example, Gigabyte, Asus, MSI, Powercolor, Hercules, Sapphire etc. These
cards don't differ much from the reference cards, and performance-wise also. Some
manufacturers offer more warranty on their cards, or free games along with the card.
Among these manufacturers is for you to decide which manufacturer gives you the best
deal.
One more thing to look out for, the SE cards. These cards are scaled down versions of a
card, so for example, a Radeon 9600SE is just a low powered 9600. Try to steer clear
from these, unless you are on a very tight budget. The way they are low powered is the
internal memory bus. This is the connection between the memory on the graphics card and
the GPU. On SE versions this is only half the width of the regular card, while in the
regular versions it is twice as wide. The narrower bus really cripples the card, that
is why you should try to steer clear of SE versions. This only applies to ATI cards,
since NVIDIA doesn't use the SE designation.
The newer high end cards have a 256-bit wide memory bus.
The XT and pro cards are just variations of the other cards. The XT versions are more
powerful than the pro versions, and the regular versions are more powerful than the SE
versions. For example, a 9600 pro card would be more powerful than a regular 9600 card.
Again, this only applies to ATI cards. For NVIDIA, the Ultra versions are always the
most powerful versions. One more word about XT though. Unlike ATI, NVIDIA use the XT
designation to show that it is a lower powered version, much like ATI's SE. Again, try
to steer clear of these cards.
For a full listing of all the graphics card's specifications, look here -
http://www6.tomshardware.com/graphic/20 ... index.html. From this list you should be
able to make your choice, from everything you have learnt in this guide.