I bought it second hand for 255€ back in December. They said it wasn't overclocked or mined with, so I bought it. It looked clean enough on the pictures.
Edit: Also did I say the case fans didn't spin any faster, even with cinebench stessing the cpu?
I had my power limit up high so I set my gpu clock, memory clock, gpu voltage, power limit, and temperature limit to +0%
Should that be okay or do you think I should try something else?
This fan hub didn't have a controller. I tried to download a fan controller program on my computer or see if I could manually control it, but I can't.
So yes I think they are running at 100%, but I am not sure.
I'll definetly try to get the cables out of the way.
Thank you both, It turned out to be easier than I thought to get the fans installed and lit up.
I'm glad I didn't have to pay someone to install them for me, thanks for your help.