Valve made a significant mistake by going with what is essentially a Radeon 7600 8GB.
AMD already is selling to AIBs the Radeon 9060 8GB, non-XT.
And this GPU has so many advantages. Two of which are very important. One is the ability to use FSR4 FP8. Which results in better performance and better image quality.
The other is that it has 16 lanes of PCIe Gen5, compared to only 8X on the 7600. Which helps a lot in mitigating the lack of vram, resulting in much better performance an fewer issues with stutters.
And then it has better RT performance, better delta color compression, much better AI cores, etc.
It could be slightly more expensive, but it would be a more future proof GPU.