Just be aware AMD has been busy copying "features" from Intel, like their version of the famous Management Engine. It is not certain they are actually more secure than Intel on their current products -- in fact there are apparently statements from AMD that they must retain all control of their systems at all times, not the organization or consumer using the machine. Whether that's actually safe or not probably comes down to whether you trust AMD's keys not to be stolen or AMD not to be legally forced to get data off the customer machine with a technical notice from e.g. the Oz government.
I'll pass. Computers are supposed to be obedient tools not spies and leashes. Now get off my lawn!