diff --git a/machines/zix790prors/configuration.nix b/machines/zix790prors/configuration.nix
index e56c1d8..3a0de27 100644
--- a/machines/zix790prors/configuration.nix
+++ b/machines/zix790prors/configuration.nix
@@ -52,9 +52,9 @@ with lib;
   hardware.graphics.enable = true;
   hardware.graphics.enable32Bit = true;
   
-  # Set DP-0 as primary display for system tray and multi-monitor setup
+  # Set DP-0 as primary display with 164.90Hz refresh rate
   services.xserver.displayManager.sessionCommands = ''
-    ${pkgs.xorg.xrandr}/bin/xrandr --output DP-0 --primary
+    ${pkgs.xorg.xrandr}/bin/xrandr --output DP-0 --mode 3440x1440 --rate 164.90 --primary
   '';
 
   hardware.nvidia = {