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GIGABYTE AMD X570 Ryzen Overclocking Guide (Page 4)

By Steven Bassiri from Oct 11, 2019 @ 14:05 CDT

Frequency, Voltages, and Timings

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You can change the BCLK by typing in a value for CPU base frequency; however, this will mess with PCI-E and SATA, so we recommend only overclocking with the multiplier. The CPU multiplier can be set in 0.25 increments, so 25MHz steps. Most people will find stability at around 4.0-4.1GHz all core overclock, but it varies depending on the CPU and cooling. XMP is by far the easiest way to overclock your memory, and all you need to do is enable the setting. You can also increase your memory multiplier manually on this page. You can also find your main voltages here:

CPU VCore: The main voltage to change is the VCore, in fact when we overclocked it's the only voltage we had to increase to achieve our CPU and memory overclock. It is mainly just for the CPU, and you can move your way up from 1.3v to 1.4-1.45v depending on your cooling capability.

VCore SoC: The VCore SoC voltage is the voltage for the SoC portion of the CPU, including the memory controller and it will help with fabric clock (FCLK) as well. It is the main voltage to increase if your memory controller is not stable or if you are having trouble getting to rated voltage. You can increase this to 1.2-1.25v, although most people think over 1.2v isn't very safe. There are some known issues with changing this voltage if you are using a PCI-E 4.0 device. We should also mention there are two VCore SoC, one in the AMD overclocking menu and the one here in the BIOS. They are not the same voltage, the one in the AMD menu is the voltage before SoC voltage control is passed to the BIOS from the closed AMD PSP, you should change this one in the normal BIOS and not the AMD Overclocking menu.

We should also mention that the VDDP and VDDG voltage are derived from the SoC voltage using linear regulators, so you need to keep the SoC voltage higher than those. We will cover those later in the guide when we talk about the AMD Overclocking submenu.

CPU VDD18, CPU VDDP, PM_CLDO12, PM_1VSOC, PM1V8: The CPU VDD18 can be adjusted up to 2.0v, the VDDP can be increased to +0.2v, the PM_CLDO12 can be increased to 1.25v, the PM_1VSOC up to 1.2v, and the PM_1VB up to 1.84v if you are experiencing instability with memory/FCLK. Auto rules in the BIOS will handle some of these voltages so you probably will not need to adjust them yourself.

DRAM: The DRAM voltage is the main voltage for memory, and if you enable XMP then you wont need to manually adjust this. At 1.35v most kits will easily reach rated speeds, but you can increase this up to 1.5v when overclocking DRAM.

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Core Performance Boost is how you can enable AMD auto overclocking features such as Performance Boost Overdrive, some people might rather use PBO instead of all core overclocking, but it depends on your usage model. SVM Mode and AMD CPU fTPM are virtualization and security features; you don't need to mess with them. Disabling SMT Mode will produce one thread per core instead of two; if you do it you might get slightly higher core frequency at the cost of highly threaded performance.

When you overclock the CPU manually, many power settings are automatically maximized so you don't need to increase power limits and the such. Global C-State Control and Power Supply Idle Control are power savings features, we don't really mess with these. CCD Control will allow you to disable one of the two CCD in the CPU and it will hurt memory performance if you disable one CCD. Downcore Control will disable cores in the individual CCDs.

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You can also manually change your memory timings; the main timings are the best to change. You decrease the timing to decrease latency and thus improve performance, however you could become unstable. If you are confused by the secondary and tertiary timings, you can use the Ryzen Timing Calculator and it will produce those to manually input. Increase timings will increase your ability to get higher frequency on the memory. Every kit is different so you might want to try to get to around 3600MHz, stabilize the FCLK clock at 1:1, and then try to tighten timings and increase DRAM voltage to help with stability.

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