Finally!!! Alienware M18x R2 with Dual 980M SLI
Here are some basic steps to upgrade Alienware M18x R2 to Dual 980M SLI successfully. This configuration only tested Windows 8 or 8.1, it will not work with Windows 7.
1. Before replacing card, go to system Bios (keep your old graphics card inside system or not any graphics card installed). Then click on Boot tab, UEFI = Enabled, Legacy ROM = Disabled. F10 to save bios and Exit. After then turn off system.
2. install Single or Dual 980M.
3....
Aw m18x R2 Dual 980m SLI upgrade!!
Here are some basic steps to upgrade Alienware M18x R2 to Dual 980M SLI successfully. This configuration only tested Windows 8 or 8.1, it will not work with Windows 7.
1. Before replacing card, go to system Bios (keep your old graphics card inside system or not any graphics card installed). Then click on Boot tab, UEFI = Enabled, Legacy ROM = Disabled. F10 to save bios and Exit. After then turn off system.
2. install Single or Dual 980M.
3....
Aw m18x R2 Dual 980m SLI upgrade!!