You can check the hardware integrity by following this guide by the manufacturer
The hardware integrity check will only show tampering by third parties. This topic is about verifying the original hardware, and if the manufacturer changed the internals from a component, they could make it look the same.
If they're evil enough they can easily show nice hardware and use internally their own rigged software random generator.
I mean if we go paranoid, there are plenty of ifs and buts...
That was indeed my point.