Gigabyte RX 7800 XT Gaming OC Review

1. Introduction2. Meet the Gigabyte RX 7800 XT Gaming OC3. 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.

We can see that higher power target in play here in Cyberpunk 2077 – both the OC and Silent BIOS share the same power target and both draw about 293W under load. That's more than even the Sapphire Nitro+, and almost 50W more than the reference AMD card.

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

Unsurprisingly, that increased power draw does result in diminished efficiency – it's on par with the Nitro+, but performance per Watt is 12% worse than the reference RX 7800 XT.

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