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Undervolting help - ASUS Bios z390i

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Posted · Original PosterOP

Hello there,


I am trying to undervolt my CPU (i just want same performance but less heat, due to my smaller case and fan). 
How exactly do I undervolt in the Asus BIOS? I went into advanced mode and under AI Tweaker, but I am not sure what I am supposed to change. 
There is an option to change from auto to manual, adaptive, and some other option. 

I can't find any option that says "CPU Core voltage offset," or "CPU core voltage" that I can edit. 
it's just this one option that changes it from manual, adaptive and the other one.

I was using Intel's Extreme Tuning Utility, but that really only works for laptops. Plus every time the PC restarts, you have to set voltage again. 
However, I was putting a voltage offset of -0.100v, and I was stable after stress testing. 

How do I go about putting a -0.100v on the ASUS Bios? 




Current Build:


CPU: Core i5-9600K MOBO: Asus strix z390-i RAM: Corsair Vengeance 16GB - 3200mhz GPU: Asus Geforce GTX 970 Strix Storage: Samsung SSD 500GB & Samsung 1TB SSD Case: Louqe Ghost S1 Cooler: Noctua L12 - 92mm fan only PSU: Corsair SF600 Keybaord: Ducky Shine 3 Cherry MX Red





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select either manual or offset, and input the desired voltage or offset from stock voltage :) 

I see you've changed your DRAM voltage already, method is the exact same!


EDIT: if you're already at 1.04 Vcore it might not be worth it to keep pushing it lower. I've seen ppl get .9v but at that point why are you even on a z series chipset?

Daily Driver: Xiao Mi Notebook Air 13.3" - i5-8550U, MX150, 8GB DDR4 RAM, 256GB NVME SSD+500GB SATA SSD

Gaming Laptop: Gigabyte Aero 15X - i7-8750H, GTX 1070MQ, 16GB 2666, 500GB Toshiba NVMe SSD + 1TB EX 920 NVMe SSD

Battle Station: Core i7-8700K @ 5.0 GHz (w/ Corsair H75), MSI Aero GTX 1070 Ti, 32GB Corsair Vengeance LPX 2666, 500 GB Samsung 970 Evo, 2x500GB Samsung 850/860 Evos in RAID 1; Built in a Fractal Design Node 202.

Other PCs I own:

Apple PowerMac G4 Quick Silver

Apple Powerbook G4 Titanium 12", 1.33Ghz PPC G4, 512MB DDR RAM, GeForce FX Go5200 64MB GPU, 60GB IDE HDD

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