Essentially, Resizable BAR enables a CPU to gain full access to a GPU’s memory and theoretically providing gamers with a slight boost in their gaming performance. In the case of SAM, the feature is designed to only work between AMD’s Radeon RX 6000 series GPUs, Ryzen 5000 series CPUs, and as of this article, its Ryzen 3000 series CPUs.
In terms of performance, AMD says that gamers that enable SAM with their Ryzen 3000 series CPUs should see a performance increase of approximately 16%. Compared to when they don’t have the feature turned on. Like the Ryzen 5000 series processors, owners of Ryzen 3000 series processors will need to update the BIOS on their motherboard before you can access those gains in framerates.
At the time of writing, AMD’s Smart Access Memory for its Ryzen 3000 series CPUs is accessible.