Multi-GPU machines are now supported. Every command takes --gpu <index> to pick a card — index 0, the first the driver enumerates, when omitted, so existing command lines and shortcuts are unchanged — and --gpu all runs the command on every card in turn, each planned from that card's own stock curve. status shows each card's index.
Persisted tunings and reference curves are kept per GPU, and the logon task re-applies every GPU's persisted tuning; a card that has gone missing is reported without stopping the others. clear resets and forgets the selected GPUs, and drops the logon task once no GPU has a persisted tuning left. Saved shortcuts carry their --gpu, and auto-named links get a (GPU 1) suffix so per-card links in one folder don't overwrite each other. Two identical cards can't be told apart if their slots swap, which only matters when they carry different tunings; the active-link checkmark tracks one live link per folder.
install now also adds the Program Files directory to the system PATH, so a new terminal can run simple-nvidia-undervolt by name.
Downloads
simple-nvidia-undervolt.exe— the standalone tool.simple-nvidia-undervolt-profiles.zip— the tool + ready-made overclock/undervolt profiles per NVIDIA card range.
Full changes: v1.0.8...v1.0.9