Trying to run an i7-8086K faster by overclocking it?
Trying to run an i7-8086K faster by overclocking it?
Here is my question: How does the CPU ratio work with those three options like per core, turbo, or all core? What happens if I pick one over another? Do I need to change these specific numbers? Why would someone say they should pick a certain voltage for each setting? And what are all these voltages actually doing in the computer?
The 8700k has the same problem as the 8086k: it doesn't have a built-in heatspreader, so you need to apply thermal paste between the processor and the heatspreader to move heat away. This paste isn't good at conducting heat, which means temperatures get very high around 1.35V for Vcore. You'll need to try different voltages to find how low you can set it while keeping 5.0GHz stable; there is no single perfect answer here. If you have to push the voltage higher than 1.35V, you usually have to take the chip apart and swap out the old thermal paste for a liquid metal one so heat leaves better and temps stay down.
Thanks for helping me out, so now I need to try some experiments with voltage and see what works well too when it comes to temperature. But is there any danger or risk here? Can I break my CPU by testing at voltages like 1.30V or 1.250V? If the computer doesn't start up, will everything just stay off? Or what else might happen if the CPU hates that voltage?
For the core voltage, keep it under 1.4V when overclocking for regular use. Lower voltages are generally safe, but if you set them too low, the computer might not start at all. In that case, you need to reset your CMOS settings back to default and then try turning up the voltage again. Usually, though, instability shows up in a stress test or as a blue screen when Windows tries to open, so it's better to catch those problems earlier.
I made a few photos for you to look at. I am not sure which settings need changing, so please tell me if that's okay. Here are the links: https://postimg.cc/gallery/sDG2Vhp/06a6d760 Any help is welcome!
Here is a rewritten version with simpler words and no changes to the meaning or perspective:
All Core SSE Speed All Core AVX2 Speed BIOS Vcore % Can do 8086K at 5.00GHz at 4.80GHz at 1.400V at 100% of capacity for the 8086K at 5.10GHz at 4.90GHz at 1.412V at Top 94% for the 8086K at 5.20GHz at 5.00GHz at 1.425V at Top 65% for the 8086K at 5.30GHz at 5.10GHz at 1.437V at Top 15% That is Silicon Lottery's binning stats about this 8086K I don't think that will work well with just a 1.25-1.35 volt core... You are missing some important details from the PC specs, like the CPU cooler... The memory is 4000MHz? 😗 And this one is confirmed to be stable - Memtest86, Prime 95 Blend mode, or Aida64?
If your chip can get 50 to 100 more megahertz worth of speed (the old 8086K is supposed to handle about 5 gigahertz), I'd be happy with it. You'll want to check what voltage your mainboard applies, and see how fast the cores spin up when you turn off power limits. Try this on either one core or all cores turbo mode, and make sure the motherboard supports MCE so it can boost memory speed too. Near the very top end of performance, there are huge jumps in both power and heat for every 100 MHz extra. You probably don't need that last chunk if you're getting another 100 watts worth of power and just a tiny bit more frames per second.
I figured 5GHz was just a marketing word, and it only counts if you use one core. But my CPU has six cores, so I got that wrong right now. The PC is actually running at 4GHz all the time when I turn it off or do nothing else. Even though I can boost power and performance if I overclock it, I don't think I need to run at 4GHz even when it's idle.
I still don't know how to start doing this. Here is a list of settings, but I can't figure out which ones matter. I know I have to try setting the clock manually to numbers like 4.70 or 4.80 GHz and see if it stays stable. But that's the first problem: what name do I call "GHz" when searching? When I look for "Manual" or "Manually," there are no results showing up. I think overriding means setting it manually, but can anyone really explain all these settings to me?
There's no 'Express Lane' or autobahn to overclocking. The reason that there haven't been many responses - there's over 400 views on this thread even - is because you appear to be looking to be walked-through the entire process. There's lots of trial and error involved, and you need to know how to troubleshoot if any problems occur sooner or later. If you just want the quick and dirty, one-button OC, then just enable the motherboard's OC Genie feature. Keep in mind that you may need better cooling than you currently do, as the auto features tend to use more voltage than is necessary, but it guarantees the OC is stable.