Sicher, hier sind einige Tipps zur Untervoltage-Anpassung für einen i7 9700K.
Sicher, hier sind einige Tipps zur Untervoltage-Anpassung für einen i7 9700K.
1.16 worked well, prime95 ran smoothly for 45 minutes... but then it stopped. The PC didn’t crash, though the program did. I’m trying version 1.17 now. I just saw the mention of llc—I haven’t adjusted that option. I’m not overclocking; actually, I’m slightly underclocking since all cores are maxed at 46. Do I still keep llc enabled by default?
Feeling puzzled, I'm trying to figure out the expected temperatures online. Even with an overclocked CPU, some people warn that anything above 80°C is risky. I'm actually lowering the clock speed, reducing voltage, and tweaking fans, yet Prime95 still hits a max of 82 on afterburner charts. That’s just the main CPU temperature shown, right? I think core temps might be even higher. Based on what I see, it usually stays around 60 at 60°C, 70 at 70°C, 80 at 80°C, then back to 70, and repeats. It runs about 5 minutes at 60°C, 5 at 70°C, 5 at 80°C, then cycles again. At 4.6GHz with a Vcore of 1.170, it’s water cooled with two intake fans, an extra top exhaust fan, and two radiator fans. Shouldn’t the temps be lower? It’s still running after an hour, and no errors have appeared so far.
The latest generation performs well as anticipated. The 9900KS running at 5GHz with 1.170V begins in the upper 80s, reaching its peak in the high 90s when the core is hot.
I really don’t want to risk letting prime95 run continuously on stock for extended periods. The numbers aren’t matching the expected ranges—75, 85, or 95 instead of 60, 70, or 80. I’m worried about the CPU overheating and sitting there for hours at high temperatures. It’s been a frustrating weekend trying to get this right. Fail.
Under load conditions, voltage decreases compared to the current drawn. Your reading of 1.170V comes from the VRVout sensor after the droop; before the drop it was 1.3–1.4V. If you kept the LLC in auto mode, stability would require a higher voltage than 1.2V because of vdroop effects.
:EDIT:: Operating above 1.2V doesn't lower temps, so sticking with defaults works fine instead of limiting boost speed to 4.6Ghz.
If you decide to give this another shot, what category should I place it in? The motherboard is TUF Z370 Gaming Plus II. I’m just puzzled about why people with the same CPU as M are getting overheating at low voltages and temperatures, while my own overclocking setup (4.6GHz boost) runs smoothly without much change. Is there a faulty CPU here? I’ve also noticed many discussions about using AVX offset, but it only lowers the clock speed instead of helping. Why not just set the clock at 4.4 initially? I’d like a simple, step-by-step guide so I can keep temperatures low and maintain normal performance.
Sadly, my knowledge is limited to z390 boards and the 9900k/s speed. I can't assist with those specifics. Others have shared challenges with undervolting and overclocking 9700k/9900k on a budget z370, but that changed once they moved to z390 boards. If it runs fine at stock, stick with it or try a cautious -0.030v adjustment.
LLC appears designed to manage voltage spikes. Based on what I understand, it helps stabilize voltage levels, keeping cores around 4.6. It seems the issue arises when more voltage is present than usual, which could cause problems even with standard settings. With manual control above 1.2 volts, temperatures remain similar to stock, so undervolting doesn’t seem beneficial. However, anything below that threshold often leads to crashes or shutdowns after short periods. Using offset mode only improves things if the temperature stays under -0.065; otherwise, it triggers Prime95 errors. I prefer sticking to default settings for stability, even though performance suffers. When trying auto-tuning or presets, the system frequently freezes, so I rely on standard configurations and accept higher temperatures.