According to the folks at NikKTech, the Palit GeForce RTX 2070 Super JetStream has plenty of headroom for overclocking.
This GPU features a total of 2560 shader units, 40 RT cores, 184 texture units, 13.6 Billion transistors and a total of 8GB GDDR6 memory making the RTX 2070 Super one of the most powerful GPU's created to date. Also, the RTX 2070 Super JetStream model sports an improved cooling system complete with RGB effects, rear backplate and a GPU boost factory overclock of 1815MHz.