High vcore needed help!
High vcore needed help!
Hi all,
I recently upgraded my system to an i7-8700k with GSKill 32gb (4x8gb) DDR4 CL16 on an Asus TUF Z370 Pro Gaming board. Everything works smoothly even at 5GHz after adjusting the temperatures; the maximum peak was around 95 degrees, which is still within safe limits. On Prime95 it stays below 80 peaks, with the highest being 78.
However, AutoIT reports a Vcore in HWInfo and CPUZUMPER averaging 1.4 peaks, which seems high. Still, temperatures remain safe. I’m unsure what this Vcore value depends on.
I’ve tried manual OC, set the CPU frequency between 1-7, disabled all C states, turned off speed stepping, and disabled ASUS MCE. Also adjusted the cache ratio, but nothing brings the voltage down to under 1.4 volts.
Booting works fine from 1.32 to 1.39, but after a few minutes of full load (CPU or bench in CPUZUMPER), the machine freezes. I haven’t seen any temperatures above 58°C, even with the room temperature at 20°C.
I can handle these temperatures, but it’s unclear if they’re safe for the CPU. I could monitor the CPU’s IHS and cooler temperature with LM or CPUCooler. Is this a problem with the CPU itself, or is it due to the board? Would it be better to return and get an Asus Z370 Taichi?
No one has a solution? I tried another board (Asrock z370 taichi) but the same issues appeared... actually, I required more vcore than with the ASUS TUF Z370 Pro Gaming. I need to run at 1.48v for stability on 5GHz, which is quite high even at 81 degrees. I don’t understand why reviewers have better ones. 1.25v for 5ghz all cores... -3 avx...
I thought it might be bad to try again but still needed a high vcore with some tweaks. I settled on 1.415 to allow cinebench to function, but after four runs the PC would restart. Prime95 would freeze my machine after just two minutes, so something seems off—no blue screens were reported. Mostly it would freeze and then reboot automatically. I’ve tried using one RAM module at a time, but with four modules I can’t tell if all are faulty. I’m confused about what’s wrong. Usually I expect a blue screen, but my temperatures are reaching 75 degrees with a vcore of 1.415. What’s odd is that the CPU heats up quickly and cools down rapidly, dropping from 32 to 65 to 70 and then slowly rising back up to 74 or 75 before Cinebench finishes and it drops quickly to 35 degrees. The motherboard temperatures are correct on the diagnostic display and match hwinfo values (sometimes just a degree difference). I also tested without the GPU, but it didn’t make a difference. Using a lower vcore would cause freezing during the first Cinebench run and then reboot. Maybe my IHS isn’t making proper contact? I’m considering using a good paste like Gelid Extreme. However, before giving up, I was at 95 degrees in Cinebench, so it seems like something is still happening. Should I just accept this setup and keep it at 4,7ghz @1.36v? I haven’t tested Prime at that voltage yet.