OK, Let's see how well your seidon 120 can handle 1.25v. Your cpu core temps are good and are pretty equal, this is good.
Go into the bios on the extreme tweaker tab and set the ai overclock tuner to manual. Sync all cores and set the cpu core ratio to 42 and set the cpu core voltage to 1.25v. F10 and Enter to save and exit.
Open up realbench, real temp and cpu-z.
Run the realbench stress test for 5 minutes again monitoring the temp with real temp and check cpu-z to see that the core voltage is 1.25v.
Temp wll be higher now. Increasing the cpu core voltage will increase the temp. Post your maximum temperature again for me please.