GIGABYTE's AMD X570、B550、A520 series motherboard update BIOS，Added a name calledRage mod (Rage mode) and SAM (Re-Size BAR Support)function，This function is the premise of enabling the function of AMD Smart Access Memory (SAM memory wisdom technology)。Turn on SAM technology，can take full advantage of the bandwidth of the PCI Express interface，Make the CPU directly access all GPU memory，Improve game performance。
This feature requires an AMD Randon RX 6000 series graphics card、It can be enabled only with AMD Ryzen 5000 series processors and AMD 500 series motherboards.。According to AMD official description，This feature can improve game performance by up to 11%。
Want to turn on the Smart Access Memory function?，Users first need to upgrade their Gigabyte motherboard to the latest BIOS。Then turn on the "Re-Size BAR Support" and "Above 4G Decoding" options，And ensure that the system uses the UEFI pipeline for booting。besides，"Rage mode" can be turned on directly in the AMD graphics card driver。
The user wants to verify whether the Smart Access Memory function is successfully enabled.，The following actions need to be taken：Right-click "This PC" on the desktop to open "Computer Management"，Select "Device Administrator"。Then find the AMD graphics card and click twice，Click the Resources tab，If you see the two options "Large Memory Range" and "Memory Range"，It means that the function has been successfully opened。
About the Smart Access Memory function：In traditional Windows-based computer systems，Limited by PCIe specification，Only via Base Address Register (BAR) Map 256MB of system memory to GPU memory at a time，This means that the processor can only access 256MB of video memory (VRAM) at a time，This seriously affects the data transfer efficiency between system memory and GPU memory.，Limits system performance。
AMD just released the latestRadeon RX 6800When a new card in the series，One of the new technologies is called SAM(Smart Access Memory)technology，Allows the CPU to fully access the GPU's display memory，No more data exchange through Windows mapping。When users use AMD’s new generation Ryzen 5000 series processor，PCIe Mapping is no longer used，CPU can directly access GPU memory，Completely remove the read and write bottleneck between CPU and GPU。
Via AMD Smart Access Memory，Datapaths expanded to exploit the full potential of GPU memory，This eliminates performance improvement bottlenecks by leveraging PCI Express bandwidth.，This feature will provide users with a better gaming experience。According to data released by AMD，SAM technology can improve performance by 5-11% on Ryzen 5000+RX 6000 graphics cards，Game performance can be improved by approximately 6%，Especially for games that use a lot of Texture maps，The performance improvement will be more obvious。
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