The even bigger question is, is the 4090, as powerful as it is, capable of pushing over 120fps on 4K displays taht are over 144Hz?
The answer is not really on the latest gaming engines. Here are a couple of comparisons at 5160x2160 with ray tracing and then path tracing. Note that DLSS Performance was used, and Frame Gen.
Ray Tracing Psycho:
Path Tracing:
Ok I have a 12700KF so the average fps range will be higher with say a 13900KS or 14700K, but it won't be that much higher given that the CPU usage shown isn't showing a CPU bottleneck at this resolution anyway. And it certainly won't be anywhere near 30fps+ higher lol.
So really, DP2.0 being on the 4090 would be largely pointless for modern gaming as the card just won't do those framerates to meet the refresh rat maximums.