Originally Posted by salamachaa
MAJOR POST REVISION/REDO
The bizarrity continues.
In what may be my last foray into using integrated graphics (again, intel HD 4600) on this TV, I realized that directX 9 works with it but directX 11 does not. DirectX 9 would, in fullscreen mode, successfully change the resolution (to 4k at 30hz or 1080 at 60hz), while 11 would continually fail to do so with nonstop blanking.
I picked up a cheap 280, figuring I'd copy you in going the AMD route since you're the most successful with this monitor. Ha!
Benchmarks are good, showing about 7-10x more FPS than the integrated was getting, including 120 fps on some simple games which looks pretty damn good. (Integrated ain't bad though!)
I immediately got 1920x1080x120 working, on the exact same hdmi cable as showed snow in 120 hz with integrated. Applied the pixel patcher and went into the registry and added 2560x1440 and 3200x1800. Both look okay, but not really better than 1080. I used CRU to edit the refresh rates.
However there are problems. One, there is a 297 mhz pixel clock limit, but even things like 1080x120 hz (348 mhz) claim to be above this. Is this because of the back porch or blanking settings in CRU? What should I set those to?
Second, games don't seem to be able to correctly change resolution. If I change my monitor from 2160 to 1080 in the CCC menu on the desktop, the desktop goes into 1920x1080x120. If I then open a game it's in this resolution. But if I set in-game to be at 1080 then it changes the game resolution but not the video card resolution, so it's still sending to the TV in 3840x2160x30. (Overall I think 1080 at 120 hz looks better than 2160 at 30 hz.)
Thirdly, and this is probably completely unrelated to the TV, GPU accelerated video simply doesn't work. VLC shows solid black, youtube shows solid green.
Fourthly, what the hell happened to the 50" firmware? It's no longer listed on the seiki download page. I could swear I flashed this firmware before and it worked decently, and I wanted to try it again. Currently I have the mod firmware.