SpiderMan

Well, the cheapest option you can do (for free, without buying another cable/monitor/graphics card) is to reinstall the graphics drivers. Use DDU to completely nuke the drivers.

That really won't make a difference on the CPU. PCIe, or Peripheral Component Interconnect Express, is an expansion bus standard that's used to connect other devices, such as Wi-Fi cards, graphics cards, audio cards, network cards, etc.

Thanks, I'll correct my post.

The differences between X570 and B550 are as follows; which may or may not be all of the differences I can find. X570 uses PCIe 4.0 x4 as it's Chipset Link, while B550 uses PCIe 3.0 x4. Chipset link is the PCIe lanes that are dedicated between the CPU and Chipset (X570 or B550) that allow for communications for I/O, SATA, audio etc. X570 has 16 PCIe 4.0 lanes while B550 has 16 PCIe 3.0 lanes. Going into the future, with AMD and Nvidia offering graphics cards (if you can get your hands on one) with PCIe 4.0 capabilities, so there is a faster throughput/bandwidth associated with

There is also a possibility of the cable or ports being the issue too. Have you tried to switch the cable around to other DisplayPorts on the graphics card end and the monitor end, both of which are if applicable?

Have you tried plugging your computer into another display, such as a TV? If the issue still persists, then it's the GPU. Otherwise, the problem lies with the monitor.

Second this as I've always wondered about this, considering I might look into one going into the future.

I really don't know where to go from here. The only thing that I can think of to do next would be to disable/kill/end task Search and see if CPU usage drops. Best of luck!

Strange...is the BIOS updated to the latest non-Beta BIOS?? Can you disable Cortana in Window's Settings?

Are you using any browser extensions at all? Try and disable them or remove them and check again to see if usage is still high from SearchApp.exe.

Not Task Manager, it's called Resource Manager. Click on the Performance tab in Task Manager and it should be located at the bottom left. Have you tried to End task "Search"? Besides having Malwarebytes for anti-malware, do you have any other 3rd party anti-virus installed? Windows Defender should suffice and I'd suggest running a scan to make sure there are no viruses on the system.

Ryzen 5 5600X. Improved IPC and better single core performance than the Ryzen 5 3600.

Oh strange, open up Resource Manager to the CPU tab and filter it so that the Threads column is going from greatest to least. Now, what processes are at the top of the list of processes?

Make sure the CPU block is mounted correctly and that any protective plastic cover is removed from the CPU block before installing. What are your core voltages running at? Use HWinfo64 to check that under Sensor readings.

Have you tried to reinstall the graphics drivers?? Use DDU and reinstall with a fresh copy of the drivers.