Help me pick my RAM kit

[pkr]

I am building a HEDT with these specs and looking for some guidance on which RAM kit to go with.

Specs:
CPU: AMD TR 3970X
MOBO: Asus ROG Zenith II Extreme Alpha
RAM: GSKILL 256GB (8x32GB)

RAM Options:
The RAM configurator suggests the following...

a. F4-3200C16Q2-256GTRS
b. F4-3600C18Q2-256GTRS

Speed:
a. (16/3200) x 2000 = 10 nano seconds
b. (18/3600) x 2000 = 10 nano seconds

Questions:

1. Can I use either of the options for my build?
2. Do we know if there is material difference in speed?
3. Not sure why newegg site reads the Chipset: Intel XMP 2.0

https://www.newegg.com/global/au-en/...82E16820232996

Thanks for your assistance.