The X2 can team up with it to achieve a three-way CrossFireX config. This is a single-GPU card with 512MB of GDDR5 memory, my current favorite graphics card value. On top of that, AMD says the bridge chip supports a broadcast write function that can relay data to both of the X2’s graphics processors simultaneously, conserving bandwidth.ĭiamond was incredibly kind to provide this Radeon HD 4870 card for our use in multi-GPU testing, and we’ve done exactly that. The PCI Express switch on the X2 already manages traffic for 48 lanes worth of Gen 2 PCIe connectivity, including 16 lanes to each GPU and 16 lanes to the rest of the system. Whether the sideport connection will be a big help is an open question, though. The sideport connection should help improve performance in cases where multi-GPU applications have typically had performance scaling problems, such as when texture synchronization between the GPUs becomes a problem. This link augments the bandwidth already available via the X2’s CrossFire bridge interface (CFBI in the diagram), which is only used to pass final frames from one GPU to the next for compositing, and its PCI Express lanes. AMD says the sideport is electrically similar to PCI Express but is simpler because it’s only intended as a peer-to-peer link between GPUs. You may have noticed that the sideport connection offers 5GB/s in each direction, very much like a PCIe 2.0 x16 link. This diagram provides confirmation for what we’d suspected: that the X2 provides additional bandwidth between its two RV770 graphics chips by means of a dedicated “sideport” connection. Continued abuse of our services will cause your IP address to be blocked indefinitely.A nifty logical block diagram of the 4870 X2. Please fill out the CAPTCHA below and then click the button to indicate that you agree to these terms. If you wish to be unblocked, you must agree that you will take immediate steps to rectify this issue. If you do not understand what is causing this behavior, please contact us here. If you promise to stop (by clicking the Agree button below), we'll unblock your connection for now, but we will immediately re-block it if we detect additional bad behavior. Overusing our search engine with a very large number of searches in a very short amount of time.Using a badly configured (or badly written) browser add-on for blocking content.Running a "scraper" or "downloader" program that either does not identify itself or uses fake headers to elude detection.Using a script or add-on that scans GameFAQs for box and screen images (such as an emulator front-end), while overloading our search engine.There is no official GameFAQs app, and we do not support nor have any contact with the makers of these unofficial apps. Continued use of these apps may cause your IP to be blocked indefinitely. This triggers our anti-spambot measures, which are designed to stop automated systems from flooding the site with traffic. Some unofficial phone apps appear to be using GameFAQs as a back-end, but they do not behave like a real web browser does.Using GameFAQs regularly with these browsers can cause temporary and even permanent IP blocks due to these additional requests. If you are using Maxthon or Brave as a browser, or have installed the Ghostery add-on, you should know that these programs send extra traffic to our servers for every page on the site that you browse.The most common causes of this issue are: Your IP address has been temporarily blocked due to a large number of HTTP requests.
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