If you want to get very paranoid most instructions probably use slightly different amounts of power for different operands which will change thermal output whic

If you want to get very paranoid most instructions probably use slightly different amounts of power for different operands which will change thermal output which will affect CPU throttling. I'm not sure there are any true constant time instructions on modern high-performance CPUs. I think we have just agreed that some instructions are as close as we can reasonably get to constant time.