I would say those are temperatures in the normal range for a GPU operating under full load. Looking at my GPU’s temperature right now, it shows 85 deg C, while running at 92% load. Your CPU is likely running cooler because it is not anywhere close to fully loaded (or maybe it’s a very efficient CPU). The six-core Intel CPU in my workstation here is under 100% continuous load from 14 tasks and currently shows a temperature of 86 deg C.
If those are two identical Titans it seems they may not be getting equal air flow, you might want to try spacing them further apart if the PCIe slot assignments allow for this.