I had a 3700x that would lock up sometimes at light usage. Passed every stress test, and could idle for days. I swapped ram, psu, and mb with no effect. It’s possible the microcode and firmware mentioned here could have fixed it but I got another CPU and all my problems went away. Worth the $200 for me.
The biggest chargers I commonly see are 350kW. That’s about 15 miles per minute. The NACS connector doesn’t have a max amp spec, but at 800v/650A that’s just over 500kW. CCS has a similar limit. The cables also get ridiculous above 500kW, but higher system voltages can reduce that.
Of course, they’re working on a 3.75 megawatt connector
https://en.wikipedia.org/wiki/Megawatt_Charging_System