For more than two graphics cards, you must use larger 3-way or 4-way bridges, or multiple single bridges. With the exception of a few low-end products, Nvidia GeForce and AMD Radeon graphics cards running in multi-GPU configurations require a bridge connector to link the cards together. Having multiple graphics cards in a system brings some other side benefits as well, but we’ll get to those later. Even if a motherboard has multiple PCI Express x16 slots, it may not be SLI- or CrossFire-compatible.īecause SLI and CrossFire are features specifically designed to increase performance in games, the technologies are ideally suited to gamers looking for higher frame rates. Nvidia SLI and AMD CrossFire (seen here) multi-GPU configurations will work only on compatible motherboards that support the technology. The more GPUs that share a 3D workload, the better. Cards with two SLI or CrossFire edge connectors, however, can be set up in two-, three-, or four-card configurations. If a card has only one of these edge connectors, only two cards can be paired together for CrossFire or SLI operation. Two, three, or four separate graphics cards from the same product family (three Nvidia GTX 580s, for example, or a Radeon HD 7850 and an HD 7870) can be linked together within a system to distribute the workload of rendering graphics and (ideally) to increase performance.īoth Nvidia GeForce and AMD Radeon graphics cards feature one or two small edge connectors, usually along the top and front portion of the printed circuit boards. SLI and CrossFire are fundamentally very similar. AMD calls its multi-GPU rendering system CrossFire, presumably because it sounds cool. Nvidia in fact acquired 3dfx a while back, leveraging that well-known brand, even though the underlying technology is quite different.
Amd crossfirex software#
Nvidia calls its multi-GPU rendering software SLI (short for Scalable Link Interface), in homage to 3dfx, though it’s nothing like the old SLI system that shipped with the Voodoo2. Here are two words you need to know when it comes to multi-GPU rigs: Crossfire and SLI. First: What’s the deal with Crossfire/SLI?
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