Overclocking & Temperatures
Overclocking these days are become very easy, still for new users who have no idea what to do, there is an option for auto overclocks built-in the motherboards. Asus has implemented their 5-Way Optimization which can give very nice automated overclock, by testing your particular CPU and push it as long as possible. To see how much the auto overclock it can give I ran it and let it do its work. The Asus 5-Way Optimization stresses test CPU and push clock speed and voltage up one step at a time, and after 35-min it gave me a 4.8GHz overclock with a reasonable 1.3 V voltage. Not bad for a one-click system and useful for new users who don’t know much about overclocking.
Now for manual overclocking, I have set the BCLK to 100 with sync all cores to 49 core ratio, set the DRAM to 2400MHz at 1.35 voltage. The CPU core voltage was set to 1.340 voltage. The Core i7 7820X at 4.9GHz was rock solid and passed 48Hrs of a stress test. I did push more for 5GHz on 1.4V, but no luck as the 240mm AIO cooler was unable to cool the CPU at that point and reached over 100° C temps, though the CPU was able to boot with 5GHz, but temps were very high, so with custom water cooling it might be possible to run at that clock speed.
As you may already know, there is a lot of talk about VRM temperatures on the X299 motherboards, and for that, I tested the board extensively and monitored the temperatures on different workloads including gaming, standard workload, rendering, and syntactic benchmarks. For the syntactic test, we used AIDA64 system stability test.
As the ROG Rampage VI Extreme Omega VRM is designed to handle much higher core CPUs than our little 8-core CPU so the VRM don’t even get warmed up even if the VRM fans disconnected. The max temp we record is just 58° C.