How to change cpu frequency?

Question

Iron

Hello.
I'm trying to overclock an Intel Q8300 processor. To do this, in the BIOS of the motherboard, I change the frequency value of the "CPU Host Frequency (MHz)" parameter from "333 MHz" to "440 MHz". As a result, a line appears in the BIOS, saying that the frequency of my processor should now be 3300 MHz (shown in the photo below). While everything is as usual.

But after I save all the changes made in the BIOS and boot Windows, I notice in the HWMonitor and AIDA64 programs that the processor frequency is 2500 MHz (that is, the processor frequency remains unchanged / factory).
That is, in the BIOS, the processor frequency changes (increases to 3300 MHz), and after loading Windows remains the original (2500 MHz).
Motherboard Gigabyte EP45T-UD3LR (rev 1.3),
The BIOS is the latest version (2011).
Battery voltage mat. Boards: 2.98 Volts.
All the BIOS reconfigurations I made when I exit and return to the BIOS remain (that is, what I reconfigured in the BIOS remains).
PS I decided to overclock the processor for the first time in 6 years of use.
PPS I have the same situation with the voltage of the CPU and MCH cores. The voltage value also changes in the BIOS, but the voltage value does not change in the AIDA64 program:

Adding a screenshot of Advanced Clock Control:

Answer 1

Add at least 10 megahertz, not 70. See cpu-z for changes. For such a large change in frequency, you need to increase the voltage on the processor. The maximum normal for this process is 1.45 volts, no higher is needed. In this case, the heat dissipation will increase greatly. Also, you will have to raise a little other voltages. In your case, it is better to find the most stable frequency without increasing the voltage and that's it. In principle, under good cooling, my Q9450 once worked stably at 4GHz.