RTX 5070 Ti at 143 Watts: Undervolting Tested - igor´sLAB
A GeForce RTX 5070 Ti has been successfully undervolted to operate at just 142.8 watts, significantly below its official 300-watt TGP rating, though gaming performance impact remains untested.
A GeForce RTX 5070 Ti has been pushed to a reported maximum power consumption of just 142.8 watts using the mVolt+ undervolting tool. The GPU operated at approximately 0.669 volts and under 1.9 GHz clock speed, well below its official Total Graphics Power rating of 300 watts. However, the experiment lacks meaningful gaming benchmarks and longer stability tests, making actual efficiency gains impossible to determine.
The user employed mVolt+ Extreme version 0.47.2 for the profile, setting the GPU clock to around 1,897 MHz with a voltage offset of minus 145 mV and an additional clock offset of plus 300 MHz. Graphics memory remained at factory settings, with monitoring showing maximum board power of 142.8 watts at up to 98% GPU utilization. The GPU reached 47.8°C, with the hotspot at 51.8°C and graphics memory peaking at 56°C.
While this represents roughly half the nominal power consumption, the comparison is misleading. The RTX 5070 Ti typically runs at significantly higher clock speeds during gaming than 1.9 GHz. Without identical benchmark scenes and frame rate data, it's impossible to quantify performance sacrificed for power reduction.
Experimental Results
The published screenshots don't prove sustained operation at 0.669 volts under maximum load or gaming stability. Possible frame rate losses remain unknown, though the experiment demonstrates technical feasibility. The RTX 5070 Ti uses NVIDIA's GB203 GPU, also found in mobile Blackwell models with smaller power budgets, explaining its potential for sub-300-watt operation.
What matters is how much performance is retained at that level.
Tool Development
The mVolt+ tool remains under active development, with version 0.50.10 released on October 31. Recent versions have reintroduced experimental voltage limit options for RTX 50 cards with GeForce drivers 621.01 and later, after NVIDIA restricted previously used modifications. BIOS overrides aren't essential for normal undervolting, as voltage/frequency curves can still be adjusted through other methods.
The developer notes that available features depend on the specific GPU, VBIOS, and driver version. Stability with extreme profiles isn't binary either—cards may pass short benchmarks but crash under different load conditions or in specific games. This underscores why longer tests with various load profiles are essential for proper assessment of undervolting efficiency.
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