Power Draw
We use Nvidia PCAT to measure power draw of the graphics card only, with readings from both the PCIe slot and the PCIe power cables combined into a single figure. We use A Plague Tale: Requiem (4K/2160p) for this testing.
What's really interesting about power draw is that it's actually lower than the MSI Ventus 3X model, despite running at a higher clock speed. Both GPUs technically have the same 300W TGP, but the Vanguard drops to 293W for real-world 4K power draw. It's possible the enhanced VRM/power stages help contribute to a slightly more efficient design, but it could also just be the silicon lottery and my sample is able to achieve its clock speed at a lower voltage – there's no way to say for sure without testing significantly more cards!
Performance Per Watt
Combining the power draw values shown above with the performance data, we present performance per Watt for each graphics card tested:
That does mean performance per Watt is highly impressive though, sitting near the top of the chart, and marking a 5% improvement over the Ventus 3X.