Does BIOS overclocking automatically increase CPU voltage?

H2OMC

Honorable
Sep 2, 2013
44
0
10,540
I have an Asus M5A78l-M LX 125 watt motherboard and the BIOS offers easy two, five, eight and ten percent overclock options. My question is, are the CPU voltages being automatically adjusted or not? I'm not getting very stable overclocks and voltage is what first came to mind as an issue. It's definitely not a temp issue; I ran prime95 prior to overclocking and I only reached a max of 48C at 100% load for 10 minutes.

CPU is AMD 4130 at 3.8ghz (stock) with stock cooler.