1. Introduction2. Meet the Sapphire RX 7800 XT Nitro+3. Testing Methodology4. Game Benchmarks5. Clock Speed6. GPU Temperatures7. Acoustics8. Noise-Normalised Temperatures9. Power Draw and Efficiency10. Overclocking11. Closing Thoughts12. View All Pages

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 Cyberpunk 2077 (4K) for this testing.

Power draw, meanwhile, has been increased by almost 40W compared to AMD's reference card. That's when looking at the OC BIOS, at least, which pulled 286W, though the Silent BIOS is more frugal, this time drawing 256W.

Combining the power draw values shown above with the performance data, we present performance per Watt for each graphics card tested:

That increased power draw, coupled with small 2-3% performance gains, does mean efficiency is reduced for the Nitro+ – performance per Watt is 12% worse than the reference RX 7800 XT.

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