Kamille03

Of course you can! Windows comes with a Microsoft tool built-in that allows you to prepare the system for deployment on other computers. This is used in enterprises to deploy the same configuration to multiple PCs.
 
WARNING: Backup all user data before you begin. (Like My Documents and Desktop) This will force you to make a new user profile. You might lose access to any information that was stored under your existing user accounts especially if you have used Windows Encryption.
 
Here is the process:
Open an administrative command prompt Run the command sysprep /generalize /shutdown Wait for the computer to shut down Move the hard drives to the new system At this point when you turn on the new system it will walk you through the new PC setup as if you had just installed a new copy of Windows. When you get inside you will find all of your old stuff is still there.
 
SOURCE: https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/sysprep-command-line-options

it may work but it's recommended to do a clean install to prevent multiple drivers causing issues
 
i would recommend backing up your SSD to your HDD and install a fresh copy of windows on the SSD
and unplug the HDD while installing windows to prevent accidental deletion and error in partitioning.
 
to backup your SSD, you can go thru each folder and search for what you need
or you can copy paste the entire drive (and/or create an image so you can recover back to it, just in case) to the HDD, keep it for a month or two as you use the new install, and if something is missing just go back to it

The parts you've already picked out seem fine, Optix is doing wonders for those rendering engines. But it will be advisable to wait till after the new 3000 series gpus to be released before you purchase your system.
 
I'm not sure what your work flow is. If you could, you might want to consider re-purposing your old PC to a 24/7 render box. 
 
If not, I'd swap out the case for something bigger with higher airflow.
 
32GB of ram is fine. I guess you could optimize your scene. 
 
Particle baking will eat your cpu power. But that really depends one the physics engine. An intel cpu with better ipc per cores maybe better for this since some calculations only run on 1 core(At least for flip fluids). You have to decide how much you're doing this and weigh its pros.
 
 
Motherboard: X570 perhaps.
My personal rule is to pick out a board with kinda overkill power delivery. Rendering things 24/7 will heat things up real fast. And my fear is having the vrms blow. 
There's no data to back this up but its just for a piece of mind. I don't have a particular board to recommend but I'm sure there's a vrm tier list somewhere.
 
PSU: 1000w Gold rating or higher perhaps
Again I have same rule as with the motherboard for the PSU. 1000w just because you want to add a second or even third gpu.
Pick something from tier A 
 
CPU Cooler: Noctua nhd 15, BQ, Scythe.
Massive heatsinks with competent silent fans, helps you sleep at night.
You can use the stock cooler for ryzen, its good enough. But I don't prefer having my cpu run at 80*C long term.
 
GPU Cooler: 
Unless your stock cooling is shit there's no need for this. I run a Morpheus 2 on my 980 Ti. Keeps it real cool and quiet.
 
 

How long can you wait? If you can wait until November, see what Ryzen 4000 is going to offer on the 8th of October.

All seem fine except the case. It’s got sub-par airflow which isn’t ideal. Take a look at the P300A, P400A, Meshify C and Lancool II. 
 
A B550/X570 would be your best bet. 
 
If you are considering Ampere, wait for reviews to come out to check power consumption. I’d recommend a 650w minimum from what we know. 
 
Stock cooler should be fine, if you find it too noisey you can get an aftermarket one for like $30. As for the GPU cooler, there are little to none aftermarket models and I no next to Boone who actually uses one. 

I didn't know about that, I'll look into it!