AMD/ATI Pixel Clock Patcher

[castrwilliam]

Would it be possible to patch the VGA dot-clock max limit out?

I have two P1130 CRT monitors that, at least under Linux with the stock open source video driver, can easily do 3200x2400 48Hz GTF, and can even do 4K TV resolution, tweaked modeline, at the same refresh (with the obvious problem of stretched pixels). Under Windows, it appears that the dot clock is limited by the driver to 400 MHz. I have been able to get my particular AMD HD 6970 to reach about 520-525 MHz without spazzing out.

I'm not sure how much trouble this is, so if it's unreasonable or impractical, I can live with 3000x2250.