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I have an ASRock Z370 PRO 4 and an i7-8700K. If you share screenshots of all the BIOS settings, an expert can advise on adjustments. I've already tried overclocking once and it didn't work. I don’t want to risk damaging my CPU or motherboard further. I’m aware that not every CPU can achieve a perfect 1:1 OC or reach 5GHz, but whatever the optimal settings are, I’d like guidance.
The situation varies across different UEFI boards. For example, some ASRock models lack an adaptive voltage feature while others have it. I reviewed an OC video for an ASUS board and attempted the changes myself, encountering issues. I adjusted the first two cores to 47V and the rest to 46V, kept the CPU cache ratio at auto. In CPU-Z, I only saw the 4600MHz value briefly when UEFI was in AUTO with Vcore voltage mode, then it changed to lower frequencies. When I switched to fixed mode at 1.3V, the 4600MHz number disappeared entirely, showing only low frequencies. I tried running at 5GHz with 1.3V, but my PC wouldn't boot to desktop. In short, leave the CPU cache ratio unchanged for practical purposes.
Dont pay anyone to help you OC your CPU. You can do it yourself. It is really not very hard. It is even harder to damage your CPU as they have many built in safety features. You just dont want too much heat or voltage. For me, I would not put more than 1.4 volts on that chip. As for heat, if it overheats, it will throttle to prevent damage. With the cooler you have on it, you are going to have to go over 1.4 volts to push that chip to 100C.
Here is a good video that will teach you how to OC. It is really easy. Watch it and go through your bios and learn how to do it yourself.
https://www.youtube.com/watch?v=Qcta3RSt...yzTwoCents
The UEFI settings vary across different boards. For example, the ASRock model lacks an adaptive voltage feature while the ASUS does have it. I reviewed an OC video for an ASUS board and attempted the changes myself, encountering issues. I set the first two cores to 47 and the remaining ones to 46, kept the CPU cache ratio at auto. Using CPU-Z, I noticed that only when the UEFI was in AUTO with Vcore voltage did the 4600MHz value appear briefly before dropping to 8-1300. I believe this happens because I wasn’t making any adjustments. However, switching to fixed mode at 1.3V caused the 4600MHz number to disappear from CPU-Z entirely, showing only low frequencies. I also tried running the system at 5GHz with 1.3V, but it failed to boot to desktop.
Feelinfroggy777 :
Don’t hire anyone to assist you with customizing your CPU. You can handle it yourself. It’s not that complicated. In fact, it’s even more challenging to harm your CPU since they have built-in protection mechanisms. Just avoid excessive heat or voltage. For me, I’d keep the voltage under 1.4 volts for that chip. Regarding temperature, if it gets too hot, the system will throttle to prevent damage. With the cooler you’re using, you’ll need to exceed 1.4 volts to run the chip at full capacity.
There’s a helpful video that explains the process clearly. It’s quite simple. Watch it and study your BIOS to learn how to do it yourself.
https://www.youtube.com/watch?v=Qcta3RSt...yzTwoCents
shen.matt92 :
The thing is all UEFI are different. For instance on the ASRock board there's no adaptive voltage feature but there is on ASUS. I watched an OC video for an ASUS board and tried it myself and had problems. Basically I put the first two cores on 47 then the rest on 46. The CPU cache ratio I left at auto. In CPU-Z I noticed only when the UEFI was in AUTO vcore voltage mode the 4600MHz number would stay for a few seconds, then go down to like 8-1300. I understand this is because I'm doing nothing. But when I turn it to fixed mode @ 1.3v for some reason it never displays 4600 in CPU-Z, only low frequencies. I tried 5GHz on I think 1.3v and my PC wouldn't boot to desktop.
Leave the CPU cache ratio alone. For all practical purposes, there are only a couple of settings you should change.
1st, start by restoring your bios to factory default settings. Then change your CPU frequency or it may be called CPU multiplier to 47. This will give you a 4.7ghz OC. It is a good start for a beginner. Dont set the frequency different for each core. Leave it the same.
Then go to your v-core and change it to 1.3 and press enter. This will give it 1.3 volts. For me, I dont go above 1.35 volts. Your chip may take less or more. But it is a start. You can start with 1.25. But my 8700k, 1.3 is the magic number.
Boot your system. If you get a blue screen, up the voltage to the v-core to 1.31. When your system boots, download Intel XTU and Cinebench R15. Run the CPU benchmark in Cinbench in windowed mode and watch your temps in XTU while you run the bench. I like for my average load temps to be below 80C for a daily driver. Run Cinebench and see if your temps average above 80C. If they do, you will need to drop your voltage. If you drop your voltage, your chip may need to drop the frequency. That is the silicon lottery.
If you run the bench and your system crashes, its okay. Dont panic. Just boot back into bios and up your voltage to 1.31. If your system finishes the bench and your temps are below 80C, then boot back into bios and change your frequency multiplier to 48. Boot back into the system and do the whole process over again. Stop when your voltage gets to 1.35 or your average temps go above 80C.
As for RAM, XMP is a one click option for overclocking RAM. It is the way to go, just enable XMP and your RAM is overclocked.
Shen.matt92 shares advice with feelinfroggy777 on customizing CPU settings. They emphasize doing it yourself without paying anyone and highlight the importance of avoiding excessive heat or voltage—recommending no more than 1.4 volts for safety. They mention overheating causes throttling to protect the chip, and suggest using a cooler to push the temperature higher. They also recommend watching a helpful video on YouTube for step-by-step guidance.