NVIDIA’s GeForce RTX 5090 is already the most powerful consumer GPU on the market, but a pair of leaked BIOS files suggest enthusiasts can now push it even further—if they’re willing to accept the risks. The MSI RTX 5090 Lightning Z, which officially supports up to 1000W (and theoretically up to 2500W for extreme overclocking), now has its power profiles exposed, and early tests show they can be applied to other RTX 5090 models from brands like ASUS, GIGABYTE, and ZOTAC.

The catch? The 12V-2x6 power connector on most RTX 5090 cards is rated for just 600W. Unlocking higher power limits could lead to overheating, connector failure, or even permanent damage. Warranties will also be voided if something goes wrong, as flashing non-OEM BIOS files is explicitly against manufacturer policies.

Despite the warnings, the curiosity factor is high. The Lightning Z’s 1000W profile—alongside an 800W overclocking profile—has been shared online, allowing users to experiment. But whether this is a stable solution or a recipe for disaster remains unclear.

For context, the RTX 5090 Lightning Z itself is a premium offering, with MSI recently confirming a price tag of around $5200. It stands out with dual 16-pin power connectors, designed to handle extreme workloads. However, not all RTX 5090 models are built the same, and forcing higher power limits on lesser-prepared hardware could have unpredictable consequences.

If you’re considering this, proceed with extreme caution. Here’s what the leaked BIOS profiles reveal

  • Power Profiles: 800W (OC) and 1000W (Extreme), with potential for 2500W in manual overclocking scenarios.
  • Compatibility: Reportedly works on non-MSI RTX 5090 models, including ASUS, GIGABYTE, and ZOTAC.
  • Connector Risk: The standard 12V-2x6 connector is rated for 600W; exceeding this may cause overheating or failure.
  • Warranty Void: Flashing non-OEM BIOS files invalidates manufacturer support and RMA claims.
  • No Shunt Mods Needed: These BIOS changes eliminate the need for hardware modifications, but stability isn’t guaranteed.

The appeal of unlocking hidden performance is undeniable, but the RTX 5090’s power delivery system isn’t designed for such extreme loads. For most users, sticking to official BIOS settings—and investing in a properly rated power supply—is the safer path. That said, if you’re an overclocker with a backup GPU and a tolerance for risk, the files are available for those who dare.

For everyone else, this serves as a reminder: pushing hardware beyond its intended limits can have serious repercussions. The RTX 5090 is already a high-end card; turning it into a high-power experiment might not end well.