Intel recommends that the Resizable BAR be enabled on the Arc desktop graphics card
Recently, Intel finally launched the Intel Arc brand Alchemist (DG2) desktop discrete graphics card, the first of which is the Arc A380, and the graphics card driver version 22.214.171.1246 was released at the same time has also provided support. Subsequently, Intel also updated the guidelines for Arc A-series desktop graphics cards, indicating that Resizable BAR must be enabled for optimal performance.
Intel said that there are currently three series of processors that can support Resizable BAR when paired with Arc A series desktop graphics cards. They are the 10th generation (Comet Lake), 11th generation (Rocket Lake), and 12th generation (Alder Lake) Cores, which correspond to the 400 series, 500 series, and 600 series motherboards and need to be installed on the PCIe x16 slot. Support for more platforms will be added later, Intel said. In terms of the operating system, Windows 10 64bit 20H2 and later (GPT partition), or Windows 11 (default configuration mode) is required.
VideoCardz said the AMD platform will be “unofficially” supported and that the Resizable BAR can be applied to systems that meet AMD Smart Access Memory (SAM). AMD currently provides support for Smart Access Memory on the Radeon RX 5000/6000 series, and Nvidia supports Resizable BAR in the GeForce RTX 30 series. Both are technologies for increasing the available video memory of the CPU and are implemented based on the Resizable BAR Capability function in the PCI Express specification, so the principles are basically the same.
Although Smart Access Memory / Resizable BAR has been released for quite some time, many platforms support this technology, but there are still a large number of users who do not enable this function on the motherboard, perhaps the promotion and guidance of Intel Arc A series desktop graphics cards can make users pay more attention to this issue.