You can now play with NVIDIA GeForce graphics card BIOS like it's 2013! Over the last decade, NVIDIA had effectively killed video BIOS modding by introducing BIOS signature checks. With GeForce 900-series "Maxwell," the company added an on-die security processor on all its GPUs, codenamed "Falcon," which among other things, prevents the GPU from booting with unauthorized firmware. OMGVflash by Veii; and NVflashk by Kefinator (forum names), are two independently developed new tools that let you flash almost any video BIOS onto almost any NVIDIA GeForce graphics card, bypassing "unbreakable" barriers NVIDIA put in place, such as BIOS signature checks; and vendor/device checks (cross-flashing). vBIOS signature check bypass works up to RTX 20-series "Turing" based GPUs, letting you modify the BIOS the way you want, while cross-flashing (sub-vendor ID check bypass) works even on the latest RTX 4090 "Ada."

The tools bring back the glory days of video BIOS modding using utilities the likes of NiBiTor (now discontinued). The possibilities of such utilities are endless. You can, for example, flash the BIOS of a premium factory-overclocked graphics card onto your close-to-MSRP graphics card. For cards up to RTX 20-series "Turing," in addition to clock speeds, BIOS modding lets you raise power limits, which have a more profound impact on performance, as they increase boost frequency residency. BIOS modding also gives you control over the graphics card's voltages, cooling performance, and fan-curve, so you can make your card quieter, as long as your cooler can keep the GPU away from thermal limits (which you can adjust, too). With cross-flashing (without modifying the BIOS or disturbing its signature), you are now able to restore a voltage of 1.1 V on your RTX 4090 GPU, if you've got one of the newer models, which ticks at 1.07 V only. You could also flash your FE with a custom-design vBIOS with high power limit, to go beyond NVIDIA's power limits.