AMD Smart Access Memory seen working on first-gen Zen CPUs

Posted on Friday, December 18 2020 @ 10:27 CET by Thomas De Maesschalck
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VideoCardz reports older AMD processor architectures seem to have support for the Smart Access Memory (SAM) technology. This feature, also known as Resizable BAR, was rumored to be limited to the Zen 3 based series on the AMD platform. However, it now appears that Zen 2 and even first-gen Zen processors are also capable of supporting it. Motherboard maker ASUS demonstrated Resizable BAR on a system with the PRIME B450-PLUS motherboard and Ryzen 7 1700 CPU.
AMD Smart Access Memory does not rely on PDEP instruction, meaning that it will work regardless of how well the instruction is supported on the CPU.

Wccftech has published two articles covering the SAM support on various AMD Ryzen CPU series that do not have Zen3 architecture. According to the screenshots published by the website, even the AMD Ryzen 4000G series codenamed Renoir will support SAM on a 500-series motherboard.
There's also a rumor that NVIDIA is still considering "whether and when" to enable Resizable BAR for its GeForce RTX 30 series.

About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.

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