![]() With the memory clock at 1860MHz, the memory is running at 14.8GHz instead of the default 12GHz. Even though the GPU clock says 1820MHz this is not really accurate in terms of the game clock, in reality, the game clock is about 40MHz higher than default, so it is at 1600MHz instead of 1560MHz. We could not go any higher due to the hardware lock on the frequency. The core clock is at the maximum allowable 1820MHz and the memory clock is at the maximum allowable 1860MHz. With all that said above this is the highest stable maximum overclock we could achieve on the XFX Radeon RX 5600 XT THICC II Ultra. This will overall limit the potential overclock of AMD Radeon RX 5600 XT GPUs. The only way this limitation will be removed is with hardware options in the BIOS to allow higher values. Raising the voltage will only harm the TDP. With the GPU frequency locked at such a low level, there isn’t any need to raise the voltage to try higher frequencies. Both are locked at these maximum values no matter what we do. We can raise it from 1500MHz default up to a maximum of 1860MHz, and that is it. The memory clock is also locked with a maximum value. At any rate, the maximum value we can set this slider to is 1820MHz, an increase of 40MHz and it does raise the clock speed accordingly. It appears that it isn’t quite reporting the right thing here. The core clock MHz slider starts at 1780MHz by default even though the game clock is 1560MHz and the peak clock is 1620MHz. This lock is imposed by AMD and is something we have encountered on other video cards frequently. In our overclocking we also did not encounter the need to raise the Voltage because the actual core clock MHz slider is locked at maximum allowable frequency setting. We do not know if this exactly works however, there is no voltage monitoring in Riva Tuner OSD that we could enable right now. ![]() We can actually raise this selection to a full 1300mV or 1.3V. Under the core voltage control, it defaults to 984mV. We can set the fan speed manually to 100% and we can unlock the core voltage control. Some things to note about using this is that it does support a power limit of +20%. ![]() This is the default settings in MSI Afterburner.
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