Testing AFR with dual AMD graphics cards of the same kind gave me almost 2 times better FPS while playing Dirt 3 as compared to a single graphics cards setup. Whatever the case might be, the GPUs and AMD drivers are smart enough to give you the perfect kind of rendering depending on the game title that you’re playing. Over the years, it has been determined that SFR works better with DX11, whereas AFR works better with the more recent DX12. On the other hand, GPUs have to do significantly more work while doing split frame rendering, and this can cause performance issues. Using AFR for frames that are dependent on each other would be a train wreck. The Results And Gainsīoth of these mechanisms work well however, they both have their limitations. Once the graphics have been rendered by secondary graphics cards, they all get sent to one parent graphics card that is then responsible for showing you the game image. Not every card has excess to the output, and they don’t render graphics directly to the screen. Just like SFR, there’s a parent card in AFR as well. One frame is assigned to each GPU, and when the next frame comes in to be rendered, it gets assigned to the graphics card in the queue. Graphics cards alternate between rendering frames. This is how the alternate frame rendering works While the frames are not being divided into portions and handed down to each graphics card to render their own piece, they are being rendered as a whole by each of the graphics cards attached. That is, there’ll be a parent graphics card that’ll render more portion of the frame than the child graphics card. In case there’re two graphics cards connected, one of them will have to do more work than the other. It’s not necessary that the workload gets divided equally amongst all of the graphics cards. With all of the pieces of frames combined from different graphics cards, the final frame is then output to the screen. This is how the split frame rendering worksĭepending on how many graphics cards are connected together, each graphics card gets its fair share of a portion of a frame to render. In split frame rendering, none of the graphics cards output the entire frame to the screen. It could safely be assumed that if multiple GPUs are working together to render the graphics onto the screen, they’re probably dividing the workload amongst themselves. They either offer you a “Split Frame Rendering” (SFR), or they offer you an “Alternate Frame Rendering” (AFR). Until now, we’ve established what is Crossfire, but how does this technology work? Before any further ado, let’s get into how the graphics cards work together. Previously, you would have to connect the graphics cards using a connecting bridge however, much recently, the graphics cards that are being produced by AMD have built-in slots to ease the process of connecting them to each other. Using AMD’s Crossfire technology, you can connect up to four graphics cards at the same time and do not necessarily need to have the same VRAM or the same architecture. Talking of the flexibility that this technology offers, you can even pair up your AMD graphics card with the integrated graphics card of your CPU. The best thing about AMD Crossfire in 2023 is that it can work with pretty much any of the motherboards available in the market. There were only a few motherboards available that supported a multi-GPU setup, let alone a Crossfire setup. During the early days, Crossfire had its limitations as well. Cross not only allowed the consumers to stack up against AMD graphics cards in their computers, but it also allowed them to have multiple graphics cards from different architectures working simultaneously to improve their gaming experience.Įver since its first release in 2005, Crossfire technology has progressed a lot. NVIDIA was the first to come out with their SLI technology that allowed the consumers to install more than one NVIDIA high-end graphics card in their computers however, the technology had its limitations.ĪMD followed, pursued, and introduced its Crossfire technology in 2005. Having one powerful GPU in your computer was fun, but everyone knew having two would always make the computer perform better with AAA titles. Having more than one GPU running in your gaming rig was an idea known to many in the early 2000s, and there were multiple GPU companies working towards making this idea into a reality. Is Dual GPU Dead? What Is AMD CrossFire? How Does It Work?
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