Sorry for bumping an old thread like this, but is this possible to do on a TC-P55ST60? I tried making a custom resolution using ToastyX's tool along with Nvidia's as well. Unfortunately, all I get is a black screen on anything above 60hz. Any help at all in regards to this dilemma of mine would be much appreciated.
I've had this particular plasma for years now and I was never really concerned about whether or not it could display at 120hz. However, recently, I've started using it as a gaming monitor and I've been wondering if it's possible with my current display. My display adapter is an EVGA GTX 970 OC'd connected to a Denon 1713 AVR via a "RedMere" HDMI cable. The television itself is also connected to the receiver with a "RedMere" HDMI cable. I have zero experience with 120hz, and am eager to see how it would improve my gaming experience (assuming it's possible, of course). As an aside, I've seen that 120hz has a much higher success rate at lower resolutions, but I'm not prepared to sacrifice 1080p for hertz. Just thought I'd make that clear in case that's the only way this can be done.