ReBarUEFI: Resizable BAR for almost any UEFI system

For people (like me) who don’t know what a resizeable BAR is and whether or not they want one: https://www.pcguide.com/gpu/what-is-resizable-bar/

Article quotes a 10-15% improvement in FPS for some popular games.

I’ll wait to invest the time until this is actually a game changer instead of just hype.

From an Intel support page[0] :

  Resizable BAR (Base Address Register) is a PCIe capability. This is a mechanism that allows the PCIe device, such as a discrete graphics card, to negotiate the BAR size to optimize system resources. Enabling this functionality can result in a performance improvement.

[0] https://www.intel.com/content/www/us/en/support/articles/000...

10-15% means you get to buy a cheaper GPU. The fact that we were using a bounce buffer for transfers to a high performance device in the first place seems rather wild to me, although I can understand the legacy reasons