There's not much difference between the RX 7600 and the RX 7600 XT. They are based on the same GPU and come with the same number of cores. However, the XT model increases the clock speed by up to 10% and comes with a higher power consumption of up to 190 watts.
The biggest difference is the 16GB GDDR6 memory. It looks like AMD has taken a page from Nvidia's playbook here and increased the memory capacity (RTX 4060 Ti style) without making major changes to other specs. The biggest problem here is that the memory is still crammed onto a 128-bit bus, just like on the original RX 7600.
This could become a problem. Higher memory capacity is great, but with such a thin bus width, the RX 7600 XT will probably be starved for bandwidth. In fact, this is not unlike what we saw with the RTX 4060 Ti; last generation's RTX 3060 Ti offered better performance in some games because it had a larger bus size, not more memory capacity.
Still, AMD claims higher performance for the RX 7600 XT than the base model. The biggest improvement in the shared data is seen in Forza Horizon 5, where the XT model shows a 40% improvement at 1080p and a 45% improvement at 1440p. However, other games show much smaller improvements. In Starfield and The Last of Us Part I, for example, the XT model offers an increase of close to 17%.
It's important to note that all of the above games show this level of performance improvement with FidelityFX Super Resolution 2. In Call of Duty Modern Warfare 3, the only game AMD tested without FSR 2 at 1080p, the XT model was only 7% faster than the non-XT model.
It will be interesting to see how the card performs in a range of games when it's released. With such variable results across games, it's hard to say how meaningful the performance improvements will be over the base model. As we saw with the RTX 4060 Ti, it's possible that the extra VRAM capacity will only shine in certain games.
The key factor here is price. The RX 7600 XT has a recommended price of $330, $30 ahead of Nvidia's RTX 4060 and $60 ahead of the RX 7600. The RTX 4060 and RX 7600 are trading well, with AMD's card slightly ahead due to its lower price. We'll have to wait until we have a chance to test the XT card and see if it lives up to its price.
The RX 7600 XT will launch on January 24th and will be available exclusively from card partners. AMD will not produce a Made By AMD (MBA) model.