Did you ever think that I might have not only checked the Asus website but others as well. I've only been an enthusiast since 1998.
A quick search produced this.......... "According to ASUS, the PRIME Z370-A supports DDR4 memories up to 4,000 MHz. The ASUS PRIME Z370-A has four memory sockets...
If you look at the QVL for memory for that board.... It looks like the memory kit that you picked is not "officially" supported. There are very 32GB modules that board particular supports at ANY speed. You would have to install 4 x 16GB and not 2 x 32GB to have 64GB of usable memory.
You damn kids, get out of my yard. Is this the grumpy old men thread ? I'm 54, was just playing RDR Online. Waiting for Dying Light 2... patiently, well... kinda.
Anyway... GLWS.
It's a really good cpu, I have one. Unfortunately, when places like MicroCenter are asking $199 for the 3600... it can made 2nd generation Ryzen a hard sell. I wish you luck.
I went to MC Westmont to get a new NVME drive for another machine and wound up buying a 2600x and board.... just 'cuz. I couldn't pass it up. Forgive me... I'm weak.