AnsweredAssumed Answered

Dual graphics enabled, but doesn't seem to be actually on

Question asked by scked on Oct 12, 2016
Latest reply on Oct 17, 2016 by amdmatt

Full Specs:

  • AMD Graphics Card
    • R7-240
  • Desktop System
    • Lenovo H50-55 (With added on r7-240)
  • Operating System
    • Windows 10 64bit
  • Driver version installed
    • Radeon Software Crimson Edition 16.9.2
  • Display Devices
    • Asus VP247, HDMI, 1080p, 60hz
  • Motherboard
    • Lenovo OEM
    • A8-7600
  • Power Supply Unit  Make, Model & Wattage
    • Some shitty 280W (huntkey I think)
  • RAM
    • 1x8gb



The Issue:

So CCC, device manager, and GPU-Z all say that crossfire is enabled (although GPU-z sees 3 GPUs in crossfire for some reason...), but I don't think it actually is. In DX11 games, I see absolutely no difference between dual graphics mode and the 240 by itself.


My main testing ground is the game Middle Earth: Shadow of Mordor. Its a DX11 game, with a benchmark tool. In fullscreen mode, 720p, low settings, the avg and low fps values are identical.


Compare that result with the testing done on this site here. This site shows a clear 20 fps avg boost with dual graphics (this graph and this graph). I should note my results were ~ 43/32 (avg/min), which is identical to the results this site achieved with the integrated chip only.



I should see a noticeable performance boost with dual graphics for DX11 games, so what gives?


Is it because I'm only using a single stick of RAM? Does my mobo not support dual graphics? Is my weak PSU causing issues?



Attached is my GPU-Z, device manager, and CCC screenshot, showing that crossfire is "on"





PS: Even though I have the Crossfire logo option "on", I have yet to see the crossfire logo.