Wow, this forum thread has been quiet for a while.
Questions:
1) Has anyone figured out how to resistor-mod PCI IDs on the Pascal and Turing GPUs (10xx and 20xx series)? I am guessing the BIOS ID bit strap modding like in the <= Fermi days hasn't started working again.
2) Has anyone had any significant success with flashing Quadro BIOS, e.g. RTX 6000 / RTX 8000 BIOS onto a 2080 Ti or Quadro P6000 on 1080 Ti?
Context:
I think there may be a new call for Nvidia modding. Specifically, Pascal (10xx) and Turing (20xx) cards are dirt cheap, and the AI craze is pushing the need for lots of VRAM more than lots of compute.
2080 Ti cards have been modded to 22GB successfully and 44GB unsuccessfully. The latter boot, but the driver refuses to touch them.
But if we compare reference designs, RTX 8000 is similar to 2080 / 2080Ti and RTX 6000, but RTX 8000 has memory chips on both sides of the PCB populated for a cool 48GB of VRAM.
We know that 2080 / 2080 Ti has part of the GPU cut out (apart from a few rare notable exceptions), so it can only use 11/12 memory chips.
But the 44GB mod seems to be constrained by software rather than hardware. This shouldn't be surprising given the dodgy techniques Nvidia previously used to block PCI passthrough on GeForce cards.
I'm wondering of a 44GB modified 2080 Ti could be made to work with the Quadro vBIOS and driver and thus use the full 44GB of VRAM (assuming the > 24GB restriction is enforced in the vBIOS and/or driver).
This would give a lot of people a cheap and effective way to run larger models on their relatively cheaply modified GeForce cards instead of having to spend multiples more on the likes of RTX 8000.