Today we’re overclocking the Ryzen 9 9950X3D2 up to 5700 MHz in 5 minutes or less using the ROG Crosshair X870E Hero and AIO cooling.

I’ll speedrun you through the BIOS settings and provide notes and tips along the way. Please note that this is for entertainment purposes only and not the whole picture. Please don’t copy these settings and apply them to your system. If you want to learn how to overclock this system, please check out the longer SkatterBencher guide.

All right, let’s do this.

5 Minute Speedrun

When you’ve entered the BIOS, switch to the Extreme Tweaker menu.

Set Ai Overclock Tuner to EXPO II. That will make the memory run at our EXPO-rated frequency of DDR5-8000 and timings. EXPO II will load the full EXPO profile programmed onto the memory sticks.

Switch to the Advanced menu.

Enter the AMD Overclocking submenu. This will provide us with all the advanced AMD CPU overclocking tools.

Click Accept

Enter the Precision Boost Overdrive submenu. Here, we can use the AMD Precision Boost Overdrive 2 toolkit to increase the power, current, and frequency headroom of the Precision Boost 2 boost algorithm.

Set Precision Boost Overdrive to Advanced

Set PBO Limits to Motherboard. This adjusts the PBO platform parameters PPT, TDC, and EDC according to the motherboard auto-rules. On this motherboard, we find that the following values have changed:

Set Precision Boost Overdrive Scalar Ctrl to Manual. That enables us to override the warranted silicon stress level, or FIT, which is one of the Precision Boost limiters governing the maximum allowed operating voltage.

Set Precision Boost Overdrive Scalar to 10X. This increases the FIT to ten times the factory-fused value. Now, the maximum voltage when all eight cores are active is 1.360V, up 20 mV from the default limit of 1.340V.

Set CPU Boost Clock Override to Enabled (Positive). That unlocks the ability to increase the CPU’s programmed Fmax, or maximum frequency, up to 200 MHz in steps of 25 MHz. At least, on the BIOS side because this parameter is actually programmable in steps of 1 MHz.

Set Max CPU Boost Clock Override(+) to 200. That increases the CPU Fmax from 5650 to 5850 MHz, the CCD0 Fmax from 5625 to 5825 MHz, and CCD1 Fmax from 5425 to 5625 MHz.

Enter the Curve Optimizer submenu. Here’s where the real magic happens as curve optimizer allows us to finetune the V/f curve for each core in a positive or negative direction. Each step represents around 5mV. On Ryzen 9000 processors we can set the Curve Optimizer for all cores, per CCD, or per core.

Set Curve Optimizer to Per CCD.

Set CCD0 and CCD1 Curve Optimizer Sign to Negative. Setting a negative offset means the cores will use less voltage for a given frequency and boost to a higher frequency at a specific voltage. Note that the Curve Optimizer settings are highly CPU-specific, so you should find the best values for your CPU rather than copy mine. I always try in steps of 5 magnitude.

Set CCD0 and CCD1 Curve Optimizer Magnitude to 25

Leave the Curve Optimizer submenu.

Then save and exit the BIOS.

Ryzen 9 9950X3D2 Overclock Performance Improvement

We re-run our benchmarks to ensure everything works as intended and check the performance increase compared to the default settings. Higher is better, and all are higher.

The highest Core Clock reported in the operating system is about 5700 MHz.

When running the OCCT CPU SSE Stability Test, the average CPU CCD0 effective clock is 5274 MHz and CCD1 effective clock is 5215 MHz with 1.216 volts. The average CPU temperature is 92.2 degrees Celsius. The average CPU package power is 302.7 watts.

And that’s it. Thank you for reading, the Patreons and the YouTube Members for their support, and see you next time!