Yes, you read that correctly, 0.45 V.
This is a 5090 running at roughly 1.6 GHz effective core clock @ 0.45 V, while still delivering performance above previous-gen and current-gen GPUs.
To make this possible, I’m using the ASUS XOC BIOS, which unlocks the much larger +3000 MHz core offset range needed to push the V/F curve this far down.
What makes this profile interesting isn’t just the voltage, but the efficiency.
In Steel Nomad board power peaks at roughly 200 W, while in actual games I usually see around 130–180 W. Temperatures also rarely exceed 45°C with this setup.
Obviously this isn’t meant to maximize performance. The interesting part is how much performance Blackwell can retain when you push the voltage this absurdly low. For games that simply don’t need the full power of a 5090, it makes for a pretty ridiculous efficiency profile.
Current operating point:
1.6 GHz effective @ 0.45 V / 200W