ASUS ROG INTEL PROCESSOR KABY LAKE OVERCLOCKING GUIDE 2017
THE KABY LAKE OVERCLOCKING GUIDE 2017
Frequency expectations – i7-7700K
Our R&D dept has tested hundreds of CPUs and found the following frequency ranges are workable for overclocking Kaby Lake i7-7700K CPUs:
20% of samples are stable with Handbrake/AVX workloads when running at 5GHz CPU core speeds.
The AVX offset parameter can be used to clock 80% of CPU samples to 5GHz for light workloads, falling back to 4.8GHz for applications that use AVX code.
The ASUS Thermal Control Tool has now been ported into UEFI and can be used to configure profiles for light and heavy (non-AVX) workloads to extend CPU core overclocking margins on air and water cooling by up to 300MHz.
Memory frequency: The best CPU samples can achieve speeds of DDR4-4133 with four DIMMs (ROG Maximus IX series of motherboards needed). DDR4-4266 is possible on the Maximus IX Apex. For mainstream use, we recommend opting for a memory kit rated no faster than DDR4-3600, as all CPUs are capable of achieving such speeds.
Voltage wise, the Uncore shares the CPU Vcore rail. As a result, when we increase Vcore, we’re also increasing the Uncore voltage. That’s why there is some sense in overclocking the Uncore; you might as well claim the overclocking margin there is on the table, as you’ll be increasing voltage to the Uncore domain when you overclock the CPU.
AVX offset
The AVX offset parameter allows us to define a separate CPU core multiplier ratio for applications that use AVX code. When AVX code is detected, the CPU Core multiplier ratio will downclock by the user-defined value. This feature is useful because AVX workloads generate more heat within the processor and they require more core voltage to be stable. Ordinarily, an overclock would be constrained by the hottest, most stressful application we run on the system. By using AVX offset, we can run non-AVX workloads, which don’t consume as much power, at a higher CPU frequency than AVX applications.
ASUS CPU overclocking temperature control
Enter UEFI by pressing delete during POST.
Navigate to the Extreme Tweaker menu (Ai Tweaker on non-ROG motherboards)
Set Ai Overclock Tuner to Manual
Set CPU Core Ratio to Sync All Cores
Enter a value of 49 or 48 in the 1-Core Ratio limit box (according to the CPU cooling used)
Navigate to Internal CPU Power Management and press enter
Set IA DC Load Line to 0.01
Set IA AC Load Line to 0.01
Press the escape key on your keyboard to return to the previous page
Manoj Goskonda
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