TechPowerUp published a review on the AMD Radeon RX 7800 XT
A quote from the article:
With the Radeon RX 7800 XT, AMD is going after the GeForce RTX 4070. Our review confirms that AMD has achieved performance parity in rasterization and is pretty close in ray tracing, at a much better price point, and they are giving you 16 GB VRAM, instead of just 12 GB.AMD Radeon RX 7800 XT Review