Hardware makers are getting close to releasing BIOS and driver updates on February 12, 2021, 16:20 14 comments In brief: Hardware manufacturers AMD, Intel, and Nvidia have been working on incorporating a new performance-boosting feature that has been part of the PCIe spec for years called Resizable BAR (resizable Base Address Register). It's been demonstrated that by allowing the dynamic expansion of the data channel between the CPU and the graphics memory, you can squeeze some additional performance from your setup. Resizable BAR defines how much of your graphics cards VRAM is to be mapped for access by the CPU. Typically the CPU can access up to 256 MB of mapped VRAM, but with the resizable BAR it can have full access to the graphics cards' VRAM buffer.