89 C is very hot. Too long at that temp will cause your CPU to shut down. CPUs will shut down to prevent damage. The CPU temp is affected directly and indirectly. When you increase the DRAM frequency, you're also creating more heat within your enclosure (case). This slight temp increase subsequently causes other devices to have elevated temp readings; however, this shouldn't be significant.
For now, focus on your CPU temp. Return your BIOS to default by pressing F9. Save and exit. After the restart, check your temps again. Did it go back to normal, or is it still high?