I think I will wait a couple of years before upgrading my CPU/mobo. Something like this will take a while to shake out.
In a single user machine where you have control over what is running at any given time, your risk of "sharing" memory (passwords, crypto keys, etc.) between apps, including any possible malicious code, is minimal.
Assuming you run a good AV and only allow trusted/signed code to run on your box, the biggest risk would be from a malicious script exploiting your browser.
But if I was running/hosting a cloud server with multiple clients and virtual machines I would be very worried now, because you would have no control over the code being executed on the common hardware by the multi-user environment.
So your data that you store in the cloud is probably more at risk than what you keep at home. Maybe a good time to switch on multi-factor authentication for your critical online accounts in case they expose your passwords... and don't panic!