Z97 board configures auto Vcore at 1.44V for the I7-4790K?
Z97 board configures auto Vcore at 1.44V for the I7-4790K?
It was roughly two years ago when my computer began getting excessively hot during summer, especially during intense gaming sessions where the CPU would reach temperatures between 80-90°C. This was concerning because it usually never exceeded around 50-60°C, and I’ve owned my CPU since mid-2014. I decided to explore my BIOS settings more closely and revisit overclocking. Even though I hadn’t adjusted anything in the voltage section, my CPU core voltage was reaching up to 1.44V at the auto setting. It was also surpassing its power limit (sometimes up to 150W) despite being set at 88WTDP, whereas other users reported much lower values around 1.15V. After reading more and watching overclocking tutorials, I realized my motherboard might not be handling the settings well, so I manually adjusted important BIOS parameters like Vcore and RingV. Lowering them to 1.25Vcore and 1.12RingV has proven stable for the past two years and even allowed a modest overclock to 4.5Ghz. Now, after all this time, I’m still puzzled about why my motherboard sets the auto voltage to 1.44V despite the warning options being hidden. I’m concerned that running at 1.25V constantly could potentially harm the CPU, especially since the voltage offset settings are grayed out. I’m trying to find a way to adjust the voltage so it can relax when the system isn’t under heavy load. I recently flashed new BIOS version F7 on my motherboard (which only supports Gen5 CPUs), but it didn’t make any difference. Anyone have insights into what might be happening or suggestions for tweaking the BIOS?
PC specs:
- CPU: i7-4790K cooled with Noctua NH-D15
- Motherboard: Gigabyte GA-Z97X-UD3H (rev1.0)
- RAM: 24GB, 1600MHz (2x8GB, 2x4GB)
- GPU: GTX 1080
- Power Supply: BeQuiet Dark Power 11 750W
For the screenshot, I reset Vcore to auto and ran Cinebench for 5 seconds.
It seems okay as long as you stay within 1.4V. Check if you have an LLC active—it could be the issue—or maybe the BIOS isn’t working properly.
Shifted to CPUs, motherboards, and memory. The classic Intel chipset is handling it well. Base voltage should be around 1.1V, and it seems fine at that level. I've been applying mild overclocking for a few years at 1.15V on a 4770K. The autovoltage problems mean the CPU shouldn't exceed 1.29V, even during average overclocking. It appears you're running at stock settings.
Your Xeon has never reached over 1.19v under Auto load. I haven’t tested the i5’s voltages. It might be worth adjusting them manually in BIOS if needed.
Adjust IA offset to +0.100 for better results. This should bring your value down to around 1.340. Your 4790k runs at +0.000 with a CPU VCORE peak of 1.248, but at 4.4GHz you might need that +0.100 boost to hit the 4.5OC target.
First off, thank you guys for all of your input! What is an LLC? (edit: Load Line Calibration, ok. Well its been on auto when i was testing it on Auto Cvoltage, but i think i changed it to auto during some manual OC out of curiosity, but its back to auto now. Should i change it to Normal or standart or something?) I have not really changed anything appart from the Voltages, Cpu Clock or/and Turboboost Yea, its running very stable under 1.24V @4,5ghz at the Moment, i have no idea why the Mobo thinks it needs 1.44 Seems like the Auto voltage of this board really is just borked for me or something. Thank you for moving the threat to the correct section btw, as you can tell im new to the Forum How do i reduce my offset tho? It seems like all those options are greyed out in my Bios, or is it the ones at the bottom? CPU I/O Analog/Digital?
Wow, this could actually be the solution I was looking for—I just changed the LLC setting to standard and now the voltage is reaching 1,248V on auto. If I can still maintain 4.5Ghz, I’ll feel like a happy PC owner again! (Note: As soon as I tweak the OC to 4.5Ghz it drops back to 1.44V, at least I can now run 4.4Ghz on auto.) Thanks a lot! Another update: I discovered more details about my BIOS now. It seems I need to switch everything to "normal" instead of "auto" to use the offset feature—totally confusing. Anyway, I’m still not completely sure about this LLC setup. Other posts mention different modes like 0-100%, with 100% apparently meaning no LLC at all? But my BIOS only lists "auto", "normal", "standard", "performance", and "Turbo" for LLC. I set it to normal in hopes it would turn off, but I’ve learned a lot more about CPU OC lately. Thanks again!