How to Configure AMD CrossFire™ Using AMD Radeon™ Settings

Article Number: GPU-645

This document provides instructions on how to enable or disable AMD CrossFire™ using AMD Radeon™ Settings.

The content of this document is categorized into the following sections:

  • What is AMD CrossFire™
  • Configuring AMD CrossFire Global Settings
  • Customize AMD CrossFire for Individual Games

What is AMD CrossFire™

AMD CrossFire™ is a technology which can combine up to four GPUs to speed up the rendering of 3D graphics. In AMD CrossFire setups, all display outputs are connected to the primary (master) card and outputs on the slave card(s) are disabled. AMD CrossFire™ only works in full screen mode.

Note! AMD CrossFire does not operate in applications running in Windowed mode.

Configuring AMD CrossFire Global Settings

In the Global Settings, the AMD CrossFire option can be toggled on or off and the setting will be applied to all games and applications.  There is also an option to allow displaying of the AMD CrossFire Logo on the top right corner of the game screen when AMD CrossFire is running.

To access the global setting for AMD CrossFire follow the steps below: 

  1. Launch AMD Radeon Settings and select the Gaming tab
  2. Click on Global Settings and the screen below should appear providing the AMD Crossfire and AMD CrossFire Logo options

 

 Customize AMD CrossFire Modes for Individual Games

AMD CrossFire can be further customized for individual games by adjusting the game profile in the Gaming section of Radeon Settings.

Game profiles for locally installed games should be available after installing the AMD Radeon Crimson Edition driver.  If a profile does not exist simply create one by clicking on Add and pointing to the game launcher executable file (*.exe).

A game profile consists of graphics settings for image quality as well AMD CrossFire Modes which allows the user to choose the preferred CrossFire rendering mode for the individual game.

There are six AMD CrossFire modes to choose from within the game profile in Radeon Settings:

  1. Disabled: The application runs in single GPU mode.
  2. Default mode: If the application has a driver profile it will be used. If a driver profile does not exist, the application will run in single GPU mode.
  3. AFR friendly: The application will run in multi GPU mode with resource tracking disabled using alternate frame rendering. Each GPU will take turns rendering frames. AFR friendly makes assumptions that the application was built to be multi GPU aware and could cause image corruption if it was not built that way.
  4. Optimize 1x1: The application will run in multi GPU mode using alternate frame rendering, but with optimizations for 1x1 surfaces.
  5. AFR compatible: The application will run in multi GPU mode with resource tracking enabled using alternate frame rendering.
  6. Use AMD pre-defined profile: This mode allows the use of an existing driver profile and applies it to the current application.

 


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