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Mantle Frequently Asked QuestionsFAQ

​We are continually adding new partners to the Mantle development program.  Check the official Mantle page regularly for updates.​​
2.018210/9/2014 8:32 AM

​AMD CrossFire™ is supported on Linux only if there is an application profile available.  Also, Linux does not support XDMA AMD CrossFire.​

1.024610/8/2014 1:31 PM

​If your system meets the minimum power requirements, you can add a standalone graphics card to your setup. However, you will not be able to "clone/duplicate" monitors from the AMD CrossFire setup onto this card. You can only "clone/duplicate" the monitors that are physically connected to this additional graphics card.​

1.024510/8/2014 1:31 PM

​1. Please make sure the game is running in "Full Screen" mode.  Switching out of "Full Screen" mode would cause AMD CrossFire to be temporarily disabled until the game returns to "Full Screen" mode.

2. Please ensure that the game is updated with the latest patches.

3. Experiment with different "Vertical Sync" and "Antialiasing" options to see which setting provides the best performance.

4. Game support forums can provide useful tips on improving gaming performance.

5. If you have installed the AMD Gaming Evolved application (Raptr), it has an option to automatically optimize your game configuration to provide the best performance.

1.024410/8/2014 1:30 PM

​Please use the AMD Catalyst™ Control Center to verify that AMD CrossFire is enabled.​

1.024310/8/2014 1:30 PM

​There are no limitations on what output connections can be used on the primary (master) card.

1.024210/8/2014 1:30 PM

​While in AMD CrossFire mode only the primary (master) card can be used as the output source. All other cards in the AMD CrossFire setup are being used only to speed graphics processing.  In order to get an output from the secondary card(s), disable AMD CrossFire in the AMD Catalyst™ Control Center.​

1.024110/8/2014 1:29 PM

​Please refer to the troubleshooting steps in "I do not see any AMD CrossFire™ option in the AMD Catalyst™ Control Center?" FAQ​

1.024010/8/2014 1:29 PM

​In order to setup AMD Dual Graphics correctly, please read the following steps:

1. Check the AMD Dual Graphics Charts to verify which cards are recommended for AMD Dual Graphics with your APU.

2. Check with your motherboard manufacturer as to which PCI-e slot should be used.  AMD Radeon™ graphics cards require PCIe x16 slot (running at a minimum of x8 speed) to function correctly.

3. Please contact your motherboard manufacturer about how to correctly access and configure the BIOS to enable AMD Dual Graphics.

4. Once you have followed the above AMD Dual Graphics will be available in the AMD Catalyst™ Control Center.

1.023910/8/2014 1:28 PM

​AMD Dual Graphics setup only works with a single AMD discrete graphics card in combination with the AMD APU.​

1.023810/8/2014 1:28 PM

​Yes, it is possible to setup a single discrete AMD graphics card in combination with an AMD APU's built-in graphics processor. This setup is referred to as AMD Dual Graphics.

Please be aware that some BIOS options will likely need to be changed in order for this setup to work. Please contact your motherboard manufacturer about how to set this up. Once you have setup the BIOS options correctly and have verified that the discrete graphics card is compatible with the APU you are using, the option for AMD Dual Graphics will be available in the AMD Catalyst™ Control Center.

1.023710/8/2014 1:27 PM

​Some of the AMD Radeon™ R9 series cards do not need to be connected via AMD CrossFire bridges, but instead communicate between the cards via XDMA over the PCIe bus. Please refer to the "AMD CrossFire Support" on the Radeon R series specifications page as to what is required.​

1.023610/8/2014 1:27 PM

If the "AMD CrossFire" option is not available in the AMD Catalyst™ Control Center then you will need to verify that the setup has been done correctly.

1. Please check the "How do I setup CrossFire on my system?" FAQ to make sure that everything is setup correctly.

2. If you still do not have this option, please check:

  1. Confirm that the motherboard is AMD CrossFire compatible
  2. Check that the 2nd card is in the correct PCIe slot and the BIOS configuration for the PCIe x16 slot is set to a minimum of x8 speed.
  3. If the cards are identical and from the same manufacturer, ensure they are running the same VBIOS version.  The VBIOS version can be found in the AMD Catalyst™ Control Center Hardware Information tab.
  4. If your graphics cards are overclocked by the manufacturer make sure that both graphics card run at the same core and memory clock speeds.

    3. Please make sure you have the latest compatible driver installed. If you have already done so, testing with the driver that came in the CD with the graphics card is recommended.  Please uninstall the current driver prior to testing with a different version.

    4. Please ensure each card is working properly on its own.  Make sure each of the PCIe slots are operating at the minimum of PCIe x8 speed.

    5. If the above steps do not resolve your issue, please submit a detailed report using AMD Issue Reporting Form.
1.023510/8/2014 1:27 PM

​As long the "Enable AMD CrossFire" option in the AMD Catalyst™ Control Center is selected then the AMD CrossFire setup is working.  Please remember that AMD CrossFire is only enabled while playing AMD CrossFire compatible games in "Full Screen" mode.​

1.023410/8/2014 1:26 PM

​If you would like to setup AMD CrossFire between two or more discrete graphics cards (PCIe socket cards) correctly, please read the following steps:

1. Please make sure that the power supply unit meets the recommended requirements of the complete AMD CrossFire setup.  There are free 3rd party tools available online that can determine the power requirements of your system.

2. Check with your motherboard manufacturer that your motherboard is AMD CrossFire compatible with the required number of PCIe x16 slots available (running at a minimum of PCIe x8 speed).

3. Check the AMD CrossFire Compatibility Charts to verify that the cards you are using are recommended for AMD CrossFire.

4. Please make sure that you are properly grounded and the system is powered off before installing the graphics cards.

5. Connect the preferred card into the primary PCIe slot on the motherboard (check motherboard manual to determine the primary PCIe slot).

6. Connect additional cards to the secondary PCIe slots on the motherboard.  Note: AMD CrossFire only supports up to 4 GPUs.

7. If any AMD CrossFire bridge cables were included with the graphics cards, please connect them now.

8. After starting up the system ensure that you install the latest compatible driver for the graphics cards.

9. Go to the AMD CrossFire option in the AMD Catalyst™ Control Center and make sure that the check box for "Enable AMD CrossFire" is checked.

Note: For AMD Dual Graphics setup with an APU and a single discrete graphics card connected to the PCIe slot please see the AMD Dual Graphics FAQ.

1.023310/8/2014 1:25 PM

​Yes, AMD CrossFire and AMD Eyefinity are compatible.  Since only displays connected to the primary (master) card are supported in AMD CrossFire, the number of displays that can be enabled in AMD Eyefinity mode is limited to the number of supported displays of the primary card.

If you would like further information regarding AMD Eyefinity setup please visit,

1.023210/8/2014 1:25 PM

​In unsupported configurations graphics performance may be negatively impacted. AMD suggests using only the recommended cards on the AMD CrossFire Compatibility Charts.​

1.023110/8/2014 1:24 PM

​AMD CrossFire: CrossFire is the AMD brand name for multiple GPU configurations.  

AMD CrossFireX:  AMD CrossFireX was a rebranded term for CrossFire, these terms are interchangeable. However, AMD now only use the term CrossFire.

AMD Dual Graphics: This technology refers to the combination of the graphics processor on the APU and a single discrete graphics card working together in CrossFire.  A discrete graphics card is a standalone graphics card connected to the PCIe slot on the motherboard.

AMD Hybrid CrossFire: Hybrid CrossFire uses the integrated graphics on a motherboard chipset in combination with a discrete graphics card.  This is technology is obsolete and no longer supported.

1.023010/8/2014 1:23 PM

​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 displays 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.

1.022910/8/2014 1:22 PM

Virtually all monitors feature circuitry known as a “scaler,” which governs the interaction between the graphics card and the physical LCD panel. This essential circuitry also provides user-facing features like: audio output capabilities, display interfaces (e.g. DisplayPort™ or HDMI®), and the “OSD” (settings menu). AMDhas recently entered collaboration​​ with the industry’s largest scaler vendors (MStar, Novatek and Realtek) to create a range of monitor scalers ready for DisplayPort™ Adaptive-Sync by year end; these scalers will pave the way for retail monitor designs that offer compatibility with AMD’s Project FreeSync in 1Q15.​​

3.022710/8/2014 10:48 AM
Mantle Frequently Asked QuestionsFAQ

As Mantle is the first low-overhead PC graphics API built by and for game developers, it has seen significant traction within that community. As of September 23, 2014, 95 developers have registered to work with the Mantle SDK in our ongoing private beta program. Of that group, 10 developers have publicly committed support for Mantle across 20+ games and four game engines. The most recent games include Battlefield™ Hardline, Dragon Age™: Inquisition and Sid Meier’s Civilization®: Beyond Earth™. Altogether, the first-year adoption rate for Mantle, measured by shipping games, is on-track to exceed that of DirectX® 11 in its first year of availability.

1.02289/24/2014 2:31 PM

Project FreeSync will utilize DisplayPort Adaptive-Sync protocols to enable dynamic refresh rates for video playback, gaming and power-saving scenarios. 

All AMD Radeon™ graphics cards in the AMD Radeon™ HD 7000, HD 8000, R7 or R9 Series will support Project FreeSync for video playback and power-saving purposes. The AMD Radeon™ R9 295X2, 290X, R9 290, R9 285, R7 260X and R7 260 GPUs additionally feature updated display controllers that will support dynamic refresh rates during gaming.

AMD APUs codenamed "Kaveri," "Kabini," "Temash," "Beema" and "Mullins" also feature the necessary hardware capabilities to enable dynamic refresh rates for video playback, gaming and power-saving purposes. All products must be connected to a display that supports DisplayPort Adaptive-Sync.

It is our current understanding that the software architecture of select games may not be compatible with dynamic refresh rate technology like Project FreeSync. In these instances, users will be able to toggle the activation of FreeSync in the AMD Catalyst™​ driver.
2.02199/8/2014 11:25 AM

The basic benefit of Project FreeSync is the dynamic refresh rate ("DRR"), which allows the graphics card to synchronize the refresh rate of a monitor 1:1 with the framerate of an AMD Radeon™ GPU. With DRR, gamers can  experience the full range of framerates produced by a graphics card without clamping to some divisor of the monitor’s refresh rate (e.g. 30 or 45 FPS). Because Project FreeSync can eliminate the large jumps in framerates induced by traditional v-sync, the result in noticeably smoother gameplay.

Gamers especially sensitive to input latency — a delay between mouse movement and cursor movement — will also see a distinct increase in responsiveness.

Finally, running a game at full framerates (e.g. without v-sync) would typically introduce nasty horizontal tearing, but Project FreeSync also eliminates tearing as a rule. Project FreeSync is a "best of all worlds" solution from the perspective of smoothness, image quality and responsiveness.

2.02238/22/2014 11:47 AM

Project FreeSync is an AMD effort to leverage industry standards, like DisplayPort Adaptive-Sync, to deliver dynamic refresh rates. Dynamic refresh rates synchronize the refresh rate of a compatible monitor to the framerate of a user’s AMD Radeon™ graphics to maximally reduce input latency and reduce or fully eliminate stuttering/juddering/tearing during gaming and video playback.​
3.02128/22/2014 11:46 AM

With Project FreeSync, an AMD Radeon™ graphics card directly controls display timings. Direct control eliminates the need for polling or waiting on the display, which could impact latency and performance. ​

Upon connecting a FreeSync-enabled monitor to a compatible AMD Radeon™ graphics card, the minimum and maximum times between the display of new frames (the vblank period) is exposed to the GPU via DisplayPort Adaptive-Sync. Because the minimum/maximum vblank period is known to the graphics card, successive frames will intelligently be sent within those boundaries. Predictive or speculative timing is not required under this model, and the GPU will adjust the display's refresh rate to match the current frame rate.

If an upcoming frame is delivered outside of the monitor's supported vblank period, that frame will be immediately presented on-screen when available to ensure the fastest possible screen update.

8.02268/22/2014 11:45 AM

AMD has undertaken efforts to encourage broad adoption for Project "FreeSync", including:

  • Royalty-free licensing for monitor vendors;
  • Open and standardized monitor requirements (e.g. no non-standard display controllers or ASICs);
  • Industry-standard implementation via the DisplayPort Adaptive-Sync amendment to the DisplayPort 1.2a specification; and
  • interoperability with existing monitor technologies.

AMD is presently advocating these benefits to display vendors and working with their respective design teams to expand the capabilities of high-performance/gaming-oriented monitor lineups to include Project FreeSync. While AMD cannot possibly guarantee that "every monitor" will adopt Project FreeSync in time, we do believe that this approach is best to achieve wide industry support.

Additionally, it must be established that all dynamic refresh rate technologies require robust, high-performance LCD panels capable of utilizing a wide range of refresh rates without demonstrating visual artifacts. Such LCD panels naturally cost more to manufacture and validate than less capable panels, which may render dynamic refresh rate technologies economically unviable for especially cost-conscious monitors. Economies of scale and the maturation of dynamic refresh rate technologies could help alleviate this concern and further promote adoption in the future.

Learn more: What is the difference between FreeSync and DisplayPort Adaptive-Sync ?

2.02258/7/2014 2:16 PM

​An AMD Radeon™ graphics card compatible with Project FreeSync uses the DisplayPort™ Adaptive-Sync specification to automatically determine the minimum and maximum refresh rates supported by a dynamic refresh-ready system. Using this approach, no communication must occur to negotiate the time a current frame remains on-screen, or to determine that is safe to send a new frame to the monitor.

By eliminating the need for ongoing communication with pre-negotiated screen update rates, Project FreeSync can execute highly dynamic changes in frame presentation intervals without incurring communications overhead or latency penalties.

1.02247/29/2014 3:38 PM

To take advantage of the benefits of Project FreeSync, users will require: a monitor compatible with DisplayPort Adaptive-Sync, a compatible AMD Radeon™​ GPU with a DisplayPort connection, and a compatible AMD Catalyst™ graphics driver. AMD plans to release a compatible graphics driver to coincide with the introduction of the first DisplayPort Adaptive-Sync monitors.
2.02167/29/2014 3:37 PM

​AMD Radeon™​ graphics cards will support a wide variety of dynamic refresh ranges with Project FreeSync. Using DisplayPort Adaptive-Sync, the graphics card can detect and set an appropriate maximum and minimum refresh rate based on the capabilities reported by the display. Potential ranges include 36-240Hz, 21-144Hz, 17-120Hz and 9-60Hz.

1.02227/29/2014 12:34 PM

Project FreeSync’s ability to synchronize the refresh rate of a display to the framerate of a graphics card can eliminate visual artifacts that many gamers are especially sensitive to: screen tearing, input lag, and stuttering. Project FreeSync aims to accomplish this through an open ecosystem that does not require licensing fees from participants, which encourages broad adoption and low end-user costs.

1.02217/29/2014 12:33 PM
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