And it seems to work, which means that the feature is not tied towards specific processors and PCIe bus. Durin the RX 6800 series reviews, we've already covered SAM, or the Resizable BAR feature.

Currently, AMD is marketing this as an AMD only feature to be used with a Ryzen 5000 series prox, X570 motherboard, and Radeon 6x00 graphics card. It's already been said that NVIDIA will support the features as well, as hey it can lift perf a bit. It has been tested on an Intel platform, and the results coming from ASCII.jp are based on an Intel Z490 ASUS ROG Maximus XII EXTREME motherboard with firmware 1002, from November 27th. When paired with AMD's RX 6800 XT SAM or Resizable BAR does work. The guys tested with the Intel Core i9-10900K. Testing was performed with Assassin's Creed Valhalla, Forza Horizon 4, Red Dead Redemption 2, and Rainbow Six Siege. The results are interesting, have a peek:

AMD Radeon RX 6800 XT Tested on Z490 Platform With Resizable BAR (AMD SAM) Enabled