I would mostly agree with the others that you will have no issues booting, HOWEVER...that doesn't mean you won't run into some problems because we don't know your system.

Here's where you might run into problems:

1. Audio hardware: make sure whatever chipset you're moving over to is fully supported with kernel drivers, and disable any audio customizations you may have made to pipewire or pulseaudio. You may run into input confusion, hardware level/volume problems, and mixing issues, so it's best to revert to whatever defaults you may have on hand before booting.

2. Network: same thing as above, but also make sure you don't have network settings tied to a specific PCI device in your configs.

3. Disable docker and VMs from systemd before first boot: if you have any stateful containers that might be thrown into disarray by bad boots (IF they happen), you may have to spend a lot of time cleaning up. Much safer to just let them not start until you're satisfied that everything is ok, then just enable the services again.

4. Remove any Nvidia settings tied to a specific device or display. This is probably going to be the most common thing people run into. Wiping and reinstalling the Nvidia stack should fix it though if you run into issues.

All of that said, the first thing you can do to suss out IF you may have any issues with your hardware is boot a liveusb on your new build first and making sure everything works. If it does, great. If it doesn't, you know what to expect. If then booting your old drives shows problems, you've also already proven that shouldn't be the case because a liveusb worked fine, and you know where to start attacking problems.

Good luck!