These would sell like hot cakes if they came in at $500 and $370. A 7700XT that is about 5% faster over the RTX 4060ti while costing $370 and comes with 16GB of vram, I'm sold!
Or alternatively this could be 10% slower than the RTX 4060ti, but cost $330 and come with 16GB of vram with maybe a 8GB version existing as well and costing something like $300.
The 7800XT needs to be close in performance to the RTX 4070, maybe up to 15% slower, but come in with 16GB of vram and cost $500, if it can also beat the 4060ti 16GB edition by 20% margins all at the same $500 price it will be one of the best value cards.
If I was AMD these would be the cards and pricing:
RX 7500 at $170, 15% slower than the RX 7600, but also come with 8GB of vram and cost no more than $170.
RX 7600 at $250msrp, it's about 3% slower than the 4060 in rasterization at 1080p and 1440p, but at $250msrp it makes a lot more sense over the 4060 and is actually good value!
RX 7700 12GB at $300, 7-10% faster than the 4060 in rasterization. A decent 7-10% uplift over the 4060 and with 4GB more vram it's going to make a lot of sense and actually be good value, better value than the current RX 6700XT.
RX 7700XT 16GB at $370, 5% faster than the 4060ti, but comes with 16GB of vram. Slightly cheaper, slightly faster and with more vram its going to be the overall much better choice over the 4060ti.
RX 7800XT 16GB at $500, can be 10-13% or so slower than the 4070, but at $100 cheaper and with more vram it's going to be the best value card this generation.
RX 7900GRE 16GB at $600, generally 10% faster than the 4070 and with more vram makes it the better choice at $600.
RX 7900XT at $750 is already very good option and offers good value for once this generation, but it needs to become $750msrp, so that most of the models are sold at this price, right now only a few models sell at this price and they generally go back up after a while.
RX 7900XTX at $900msrp would actually be a solid high-end purchase and make wayyy more sense than the over expensive $1200 RTX 4080. At $300 dollars cheaper and generally 3-4% faster than the 4080 its going to be even better value and a much better choice.