been playing on forza horizon 3 4k ultra settings 1 hour , vrm mos 67C vsoc mos 63C , Don't have the fans on full pelt but the water cooling keeps the CPU temp around 40C which is good.That's pretty low, but the temperatures under load are more important really.
Should be fine, can handle 105c of heat
Are you getting this figure from what the capacitors are rated for?