AMD has banned the use of Power Play Tables (PPTable) in the Windows Registry on its Radeon RX 7000 graphics cards. This limits the ability to overclock graphics cards and in particular does not allow fine-tuning of GPU power and frequency curves beyond their official specifications. On this noticed well-known Buildzoid enthusiast.
Image Source: AMD
Power Play tables are an alternative method of changing GPU clock speed, power, and voltage through the Windows Registry instead of modifying or replacing the BIOS. At the same time, this is the most secure method of starting GPUs outside of their official specifications, as it prevents any risk that might come with flashing the BIOS.
Customizing the Power Play tables or changing the BIOS has several advantages over the traditional AMD overclocking methods and features offered by Radeon Software Adrenalin. First, users can bypass firmware-related GPU hardware limitations and overclock the graphics card as much as possible. Second, the Power Play tables allow for fine tuning of the voltage/frequency curve to improve the power efficiency of the graphics card. In other words, this method allows you to fine-tune the GPU behavior of the graphics card, which is not possible with regular AMD overclocking software.
The previous generation Radeon RX 6000 graphics cards have the ability to fine-tune the power through the Power Play tables. Why AMD decided to ban access to it on Radeon RX 7000 graphics cards is unknown. However, one of the AMD engineers on the Reddit forum in the topic of discussions regarding the problems of power consumption of the Radeon RX 7000 video cards informedwhat “architecturally RDNA3 has some changes in how to manipulate capacity tables”.
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