AMD was kind enough to answer these questions for me today. This obviously left me with lot of questions as to performance, compatibility, etc. Combining up to four RV670 cards of any kind or speed: HD 3850 256MB, HD 3850 512MB and HD 3870 512MB for improved performance.Pairing a single Radeon HD 3870 X2 with either an HD 3870 or HD 3850.Pairing of two Radeon HD 3870 X2 cards (two GPUs on one card) for four GPUs.That is changing here are some of the most interesting bullet points that AMD is bringing to enthusiasts: You can only use same-GPU graphics cards for example, on both SLI and past CrossFire platforms. What do I mean by this? Simply that AMD is trying to get rid of the hard coded restrictions that NVIDIA and their SLI technology place on gamers and what hardware they can use together. Just ask NVIDIA how well Quad SLI has gone for them in 2007.ĪMD is the first GPU company to attempt to make multi-GPU technology as forgiving as possible. While simple in theory, because of the complexities of the drivers, DirectX versions and the games themselves, it is quite difficult in implementation. Read and enjoy.ĬrossFireX technology is really simple in theory: take two, three or four GPUs and use their power to render one game faster than you otherwise would be able. Even in our review of the Radeon HD 3870 X2, AMD teased us with the “coming soon” insignia of 2 Teraflops of GPU computing power.īut have no fear faithful AMD fans, the CrossFireX driver is merely weeks from a public release and we were given the chance to test it out for ourselves. There have been interviews with AMD staff, the news about the upcoming RS780 chipset and hybrid graphics as well as our own revelation that CrossFireX would be working on Intel’s Skulltrail platform while NVIDIA’s 3-Way SLI would not. We have chronicled the recent news and rumors about CrossFireX and the ability to pair up several graphics boards in a single system for some time. Released in September 2005, ATI brought its own multi-GPU technology - where two graphics cards are leveraged in tandem to increase. The only problem was the future just never caught up to us. CrossFireX preview A bit of history, if you will. Ever since we first saw ATI graphics boards with pairs of CrossFire connectors on them we were told to expect the ability to scale with three and four cards in the future. The idea of plugging in more than two GPUs into a multi-GPU system for AMD/ATI is actually brand new in the modern hardware era. It’s rather funny that until today, the technology behind CrossFireX was really supposed to be some kind of secret. Come in and see how much damage a pair of Radeon HD 3870 X2 graphics can do!! CrossFireX Options and Important Testing NotesĪn Introduction to CrossFire X technology AMD has been teasing us with the notion of four GPUs in a system for quite a while, and today we were finally able to get our hands on the driver to enable it.AMD has been teasing us with the notion of four GPUs in a system for quite a while, and today we were finally able to get our hands on the driver to enable it.An Introduction to CrossFire X technology.Below is a partial list of CrossFire compatible cards. Here, the users will find all the information they require to set up their CrossFire configurations. Compatibility chartĪMD has published a compatibility chart for CrossFire cards. However, the latest generation of Radeon graphics cards integrates the XDMA technology, which eliminates the need for bridging cables (CrossFire is implemented over the PCI Express bus). This ribbon-like connector is usually provided with the graphics card but can also be bought separately. Some graphics cards models will require an external bridge for the connection. All graphics cards must be of the same generation.Ī typical AMD CrossFire configuration will usually consist of 4x Single-chip AMD Radeon graphics cards or 2x Dual-GPU AMD Radeon graphics cards, which together will add up to a total of 4 GPUs. You will require a CrossFire compatible motherboard with enough free PCIe slots to accommodate your graphics cards, as well as a compatible power supply. The implementation of a CrossFire configuration is really easy as long as you have the right hardware components. How to choose your AMD CrossFire Graphics card? Here are some tips on how to implement a CrossFire configuration and prevent against compatibility issues. The AMD CrossFire technology enables you to connect up to four GPUs together and make them work as one to boost the rendering of 3D graphics on a computer.
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