Attached Link: AMD ID Chart

Poser is hard on any CPU.  I do encounter reboots from poser(6), when over heating "Shutdown/reboot". To let you know, Intel chips run hotter than AMD. I would look into a good CPU fans for your chip. I am in for a new fan as well. I know you can underclock CPU's, but that is not the best thing to do, when it comes to logic gates, and frequencies. I do not underclock/overclock CPUs. Can shorten the life span, and they do not go well together when messed around with. I would use em the way they are ment to be used, even on Graphic cards. All would function better.  

This is my favorite AMD chart. Helps me identify a lot, when I build computers.

Also cooling in the case helps with the temp for the CPU.