If you look at the the service manual for this model, the heatsink is clearly different in design for integrated vs. discrete GPU, so the answer about the vapor chamber heatsink it just about certainly no. However both models do show two fans. Service manual here [URL]  
I'm looking for a quiet laptop with a large screen size and decent CPU performance (for programming). So I'm wondering if the new XPS 17 9720 with integrated Iris Xe graphics (without discrete GPU) has the same cooling system as the versions with Nvidia GPU. Do all XPS 17 9720 models have a vapor chamber with 2 fans? My assumption is that 2 fans should cool the CPU better and run more quietly rather than a single fan.
Does the new XPS 17 9720 with Core i5-12500H have vapor chamber cooling with 2 
fans?