Very much this. I bought a framework to have a compact PC that if needed I can take with me, I bought an eGPU enclosure so I can game with it at home, but I've not pulled the trigger on the GPU yet because it turns out Framework doesn't have the option to enable ReBAR. ReBAR is required for performance from the new Intel GPUs and those are really appealing at the moment.

The chipset supports it, people have enabled it with hacks and it works, it's just a matter of we don't currently have the option for it.

Sounds like a useful thing, sure!

I also have been waiting for this to come to FW13 laptops for quite a while! I've looked at the BIOS mod for the FW13 but 13th gen didn't have a public BIOS at the time. Plus, it seems too risky for how important my laptop is to my daily life. I'd really appreciate it if Framework released a BIOS update that gave ReBAR as an option! ❤

There are some recent launched graphic cards like Intel Arc series which can utilize the Resizable Bar (ReBAR) feature to get a significant performance improvement.

The reason is because Intel Arc (so far only the Alchemist) have silicon-level bug. When the GPU runs, sometimes it would "cache miss" (think like CPU cache, but for GPU as well). Specifically the silicon bug will let the core that triggered the "cache miss" to stall (wait around doing nothing), instead of trying to figure out something else to do.

This is why anything that cuts down latency (e.g., ReBar) significantly increase performance, as it reduce the time GPU stalls.

Since this bug is not present on the Battlemage, I expect all the B-series to not be significantly affected.