Hi RickSinGA

I have had experience with offset mode with my CPU a 4930k however the process of setting up offset mode should be universal.
The typical way to overclock your CPU is by using a fixed voltage in MANUAL mode however your CPU does not need to be running at maximum clock speed all the time as it is not power efficient, causes a lot of heat and shortens your CPU lifespan. OFFSET mode is a way to get around this and works by adding or subtracting a voltage to the CPU’s normal operation. The CPU will adjust its Vcore as needed providing more voltage when higher clock speeds are required and less voltage when lower clock speeds are required. If you open up CPU-Z under multiplier there will be your maximum multiplier set by you and then a smaller multiply which is your lowest clock frequency. Under factory settings the CPU will adjust the Vcore to maintain stability for any multiplier value in this range. It this adjustment that we add to, to allow the CPU to reach higher clock speeds.

These are the steps you need to take to set up OFFSET mode from MANUAL mode.

1. Find your maximum overclocked voltage (MAN VCORE)
This will most likely by fixed when using manual mode but to be sure run a stress test and note the Core Voltage (MAN VCORE) in CPU-Z when it is under 100% load. Also take note of your multiplier. This is the core voltage you want offset mode to reach when it’s under load so that stability is maintained.

2. Reset CPU to factory settings
Make sure to save you previous OC profile so that you can revert to it if needed. What you want to do now is find out how the CPU operates under factory settings. The quickest way to do this is to load optimized defaults but depending on how much tweaking you have already done this may not be viable. Reset your CPU settings to factory settings with now overclocking whatsoever.

3. Find the maximum factory voltage (FACT VCORE)
Now stress test the CPU again and make note of the maximum core voltage again (FACT VCORE). This voltage should be lower than your overclocked voltage but it is for a lower multiplier.

4. Determine your offset voltage (OFFSET)
Now it’s a simple case of subtraction:
OFFSET = MAN VCORE – FACT VCORE
The result will be your approximate offset voltage required.

5. BIOS Settings
Go back to your BIOS and change from manual mode to offset mode and ensure that the sign is set to ‘+’. Now enter the OFFSET voltage calculated and set your multiplier. Save and reboot. Be aware that this may not be 100% stable off the bat but it will be close. Run your stress test and observe that the multiplier and core voltage in CPU-Z are close to what you were getting in your manual overclock voltage (MAN VCORE). The core voltage may differ a little which is due to losses and power supply stability that you can’t really do anything about. What you need to do now is tune in your offset voltage by increasing it or decreasing it until it is as close as possible to your MAN VCORE under 100% load.

Your Vcore and multiply should now change dynamically with system load.

Hope this helps