I got lightboost enabled with the GN246HL + a Radeon 5770 and I didn't have to do anything special at all.
All I did was download the strobelight utility from http://www.monitortests.com
, ran the set up, and selected to install the following refresh rates: 120hz strobed, 144, and 60. Then restarted the computer and it booted up at 120hz with the blue light on the monitor becoming green.
I can change my monitors hz like normal in Catalyst Control Center. The only ones listed are the ones I selected while installing refresh rates. 144 and 60hz make the light go back blue and 120hz makes it green.
At 120hz with the green light in the monitor settings by pressing the physical buttons on it NVIDIA 3D LightBoost is now selectable whereas it wasn't before. I can turn it all the way down to min which I assume is 10% and max which is 100%.
The Strobelight utility itself DOES NOT work. Trying to open it says that my monitor isn't supported. But the refresh rates that were installed do and turn on and unlock the lightboost settings in the monitor itself.
Now I have some questions. There is a lot of hoopla surrounding getting this monitor to work with a Radeon card, but was it really this simple or is there something I am missing? I am noticing some pretty major eye fatigue after using it for about 15 minutes now at 10% and I am not sure if this is normal and something I need to get used to, or if I am missing something major like with these settings I am supposed to be wearing 3d glasses or something and there's like a 2d option I need to check that I am locked out from by not having access to Nvidia drivers lol.