ATI Crossfire uses a combination of graphic cards and motherboard. The Crossfire technology requires a specific chipset on the motherboard and video card to work together. However, Crossfire is supported on several motherboards and with several video cards.
History
ATI Crossfire was introduce in 2005. When it was first introduce, the two video cards were attached by an external cable. One of the cards was a master card that controlled both cards. As technology improved, the need for a master card was removed and software was used to connect the two cards in unison. A ribbon type connector is still required for connecting cards in Crossfire mode. All connections are currently made inside the case. CrossfireX now supports the use of up to four cards simultaneously.
Significance
Crossfire has opened the doors for higher graphics capabilities in today's home computers. The gaming industry has had the most to gain from the added graphics power of two or more GPUs working together. With two or more cards working in Crossfire mode, higher 3D performance is obtained.
What's Required
AMD and Intel have chipsets that are CrossfireX compatible. When looking for a motherboard, ATI recommends one with ATI CrossfireX certification. Along with motherboards that are certified, ATI carries certified video cards.
Misconceptions
CrossfireX does not help with everything. Some games, especially older ones, don't perform as well with multiple graphic processors. In these cases, having one video card is optimal. This is becoming more rare all the time, however.
Considerations
Most new systems being built are built with only one video card. Cost is a major factor in deciding if two or more cards will be added to a new system. Often, users will add a second, third or fourth card to a system to upgrade it as prices come down. This is an ideal way to add new life to an older system.
Tags: video card, video cards, Crossfire mode, master card, more cards