Originally Posted by jruser
I don't think pixel clock and refresh rate are the same thing.
Yup, pixel clock is actually a combination of resolution and refresh rate, actually it's the product of horizontal and vertical resolution (plus their inactive "porch" areas) and refresh rate.
I had the same thought though a few days ago. Is it even possible in the HDMI spec to send anything above 60hz? It seems to me that cables that can send 1080p60 would show artifacts at a higher refresh rate. I wonder if there is even an HDMI controller that would have bandwidth for anything higher.
HDMI <= 1.2 support a 165Megapixels/sec (same as pixel clock AFAIK
), so basically no, HDMI <= 1.2 doesn't support 1080p at more than 60Hz, 1080p60 is about as high as you can go without resorting to dual-link (which no display to speak of support) or HDMI 1.3, which no video cards support.
And then there's the fact that most TVs just plain don't accept anything above 60Hz, or at least won't "lock" to anything above that.