Overclocking Coffee Lake
Overclocking is a way to get more performance out of your computer's hardware components. There are three major hardware components that can be overclocked; the CPU, DRAM, and GPU. Today you will get a quick guide on how to get started tuning your CPU to its maximum, and the good news is that the new Coffee Lake 8th Generation CPUs are actually very similar to Intel's 6th Generation CPUs. While Kaby Lake (7th Generation) CPUs were basically Skylake (6th Generation) CPUs, but with a better process (14nm+) and higher clocks, Coffee Lake (8th Generation) adds more cores and minor process improvements (14nm++).
When you add cores you also increase the chance of one core not overclocking to higher levels, and it only takes one core to decrease highest all-core overclock, and that is where the process improvements help. The process improvements allow the new 8th Generation chips overclock as high as their 7th Generation counterparts. You can expect a 4.9GHz overclock for pretty much all chips with an all-in-one watercooling cooler, and higher if you de-lid your CPU. The good news is that if you have overclocked Skylake or Kaby Lake CPUs, then overclocking Coffee Lake is going to be very familiar.
The Flow Chart
There are differences between the chart here and the one designed in our Skylake Overclocking Guide. For starters, the new CPUs do consume a bit more power, but they also can take a few more millivolts and maintain the same temperatures. Our starting voltages have increased a bit. No vendor has found a way to overclock non-K SKUs with BCLK. So, we are focusing much more on multiplier overclocking since it's more straightforward and there is basically no need for BCLK overclocking for the majority of people.
The basics of overclocking have not changed, you increase multipliers, and then increase voltages to help maintain stability. You hit a wall when your temperatures go over 80C under stress testing, which means you cannot add more voltage unless you increase cooling, so you can't add another multiplier and remain stable.
Our starting points have changed as well; you should start at 4.8-4.9GHz, as most CPUs can do that with ease at 1.3v or less. Our CPU was only able to hit 4.9GHz stable in most cases, but six cores at 4.9GHz with a reasonable VCore is better for our CPU than pumping it up with 0.5v more and pushing temperatures past our comfort zone.
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