Converting Video for a Long While - Question

Hey people. I've got a fast one for you.

I have visual hub converting a whole pile of videos. Like 8 seasons of shows with 22 episodes each. It'll be running for a little while and I'm ok with that. My question is this: I've had it running for 3 or 4 hours and the fans are at 3k RPMs and the GPU diode... well look at the picture.


Am I going to be ok leaving it like this for a while. 12+ hours?

Is my house going to burn or should this be a pretty good stress test for an Nvida GPU?

This is really the first time I've heard the fan hum too. That is saying something since I usually convert video... just not this many.

Other than the converting, I'm not doing anything too computing intensive. Just some web surfing and email.

Thanks for the advice.