My 1080 TIS go to 235 watts.
My overclocked 1080Ti @ 2152 1.2V core voltage and underclocked VRAM (-503Mhz. or 5002Mhz. indicated in afterburner) was getting absolutely hammered by Metro:Exodus (as was my Rosewill Capstone 750W PSU):
Metro: Exodus: 8 hrs. (GPU: 60°, hot spot: 74.9°C, ambient: 73°F[22.8°C], HWiNFO64: 546.8Watts, aftrbrner: 468 watts,
FB usage: 93%, BUS usage: 48%, VRAM: 4804MiB, CPU: 83°C, delta T: °C, GPU 8-pin#1 min.: 11.5V, GPU 8-pin#2 min.: 11.52V,
GPU PCIe input voltage: 11.97V).
The voltage drops above were happening even after I connected the daisy chained, male 8-pin PCIe connectors on the two PSU cables to two separate +12V molex cables to provide more +12V power to the two 8-pin PCIe power connectors. My 1080ti never throttled because of the ASUS XOC VBIOS.
Metro Exodus Enhanced Edition w/RTX effects maxed posted the following power/voltage readings with my 4090 (but it was throttling constantly):
28 hrs. (GPU: 76°C, FB usage: 95%, BUS usage: 66%, VRAM: 10419MiB, CPU: 87°C, aftrbrner: 582Watts, HWiNFO64
GPU 16-pin HVPWR power max.: 550 Watts, GPU PCIe +12V Input Power max.: 16.4W, ambient: 78°F/25.6°C, hot spot: 83.9°C, max boost 2745Mhz.,
GPU 16-pin HVPWR min.: 11.8V, GPU PCIe +12V input voltage min.: 11.865V, process RAM usage: 8192MiB).
My 4090 was causing system resets w/my Rosewill Capstone 750W PSU so I had to hook it up to its own external PSU.