Although my card seems to never budge above 80C it appears to be a decent clocker.
My only issue is the nature of my boosts. Way to erratic. 1175, 1100, 1084 back up again.
I just want a nice steady higher number. Any pointers?
This is an issue that lots and lots of people have. Nvidia are aware of it and are working on it but if you are happy to flash your GPU, there is a BIOS that stops downclocking and gives max volts of 1.212V. I used it for benching and had no problems at all.
http://www.overclock.net/t/1363440/nvidia-geforce-gtx-titan-owners-club/3670#post_19490729
Use nvflash (I use the windows version to flash my BIOS and never had a problem) but do this at your own risk and I take no responsibility if you mess up your card.
Once flashed, you will need to restart the computer and reinstall the drivers but that BIOS doesn't down throttle at all.