You basically cannot worsen temps if you use too much, but can make a mess. If using a conductive paste be careful. I used the kryonaut spreader to put a thin layer over entire die.
Gigabyte Z390 Aorous Master
MSI RTX 2080 Ti Gaming X Trio
16GB G.Skill DDR4-3200, 16-16-16-36
850 Seasonic Focus Gold PSU