BIOS Modding Returns to NVIDIA RTX 40 GPUs: Flash Factory Overclocked Firmware on any Model

You can now run your GeForce RTX 4090 with a power limit of AIO liquid cooled variants. As long as the temps hold, you're all good.

After a decade of oppression, BIOS modding is back on NVIDIA GeForce RTX cards, allowing a wide range of tweaks on the latest hardware. Previously, Team Green had buried vBIOS modding by adding BIOS signature checks and an on-die security processor, “Falcon,” on all GeForce cards. These measures prevented the hardware from booting with unauthorized firmware (read modded firmware). Courtesy of two new BIOS tools, OMGVflash and NVflashk that hateful time is behind us.

These tools allow you to flash any video BIOS on almost any GeForce RTX graphics card, shattering the checks NVIDIA put in place to deter modders and enthusiasts. Here’s the important bit. vBIOS signature check bypass works on the RTX 20 series graphics cards, allowing you to modify the firmware any way you want. You can tweak the power limit (TBP), voltages, fan profile, and frequencies however you like. Remember that not every configuration will be stable, so don’t go overboard.

Cross-flashing (sub-vendor ID check bypass) works on all GeForce RTX GPUs, including the RTX 40 series cards, allowing you to flash the factory overclocked firmware on your budget design. Unlike their predecessors, the Ada Lovelace GPUs run pretty cool, reducing the need for an extreme cooling solution so you can mod to your heart’s content.

The newer version of the GeForce RTX 4090 has a peak core voltage of 1.07v. You can get the default voltage limit of 1.1v on all Ada Lovelace cards because of these cross-flashing tools. It also eliminates power-related throttling by flashing a third-party BIOS, resulting in consistent GPU core boost clocks.

Last but not least, tweaking your vBIOS voids your graphics card warranty. Although there are risks associated with firmware modification, using iGPU means restoring the stock BIOS is fairly straightforward. Before modding, make sure you back up your stock firmware.

Via: TechPowerUp.


Computer hardware enthusiast, PC gamer, and almost an engineer. Former co-founder of Techquila (2017-2019), a fairly successful tech outlet. Been working on Hardware Times since 2019, an outlet dedicated to computer hardware and its applications.

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