hdmi and hz?

[dcninja]

can an hdmi cable run 1080p @ 75hz?
what about a standard vga cable?
i'm overclocking my monitor in nvidia control panel and trying to figure this out.
i set custom resolution at 1080P 75hz and it seems to be running fine on my hdmi but I don't know if it's actually giving me the 75hz or if hdmi is locked at 60hz.

thanks for the help! i can't figure it out with google search everyone says different stuff.

 

[maarten12100]

can an hdmi cable run 1080p @ 75hz?
what about a standard vga cable?
i'm overclocking my monitor in nvidia control panel and trying to figure this out.
i set custom resolution at 1080P 75hz and it seems to be running fine on my hdmi but I don't know if it's actually giving me the 75hz or if hdmi is locked at 60hz.

thanks for the help! i can't figure it out with google search everyone says different stuff.

HDMI has no limitation on refresh rate but does on pixel clock.
It all depends on whether the input board takes it then if your timing controller can take it and finally your panel.
VGA should be able to do it in terms of cable bandwidth.

You can use the refresh rate tool to see how much you're really getting.

 

[Mark Rejhon]

I don't know if it's actually giving me the 75hz or if hdmi is locked at 60hz.

Check the TestUFO Frame Skipping Test in Google Chrome browser:
www.testufo.com/#test=frameskipping
New instructions are now at the top of the page.

It's also possible to push 120Hz to some newer televisions over HDMI, see HDTV Overclocking HOWTO: Getting True 120Hz from PC to TV ...

 

[dcninja]

thanks for that tool! it says valid! I'm at 75hz! thanks!

 

[Mark Rejhon]

thanks for that tool! it says valid! I'm at 75hz! thanks!

When you took the photo of your screen, your photo of the screen looked more like this good photo instead of this frameskipped photo?

 

[dcninja]

i had 3 squares in a row. taken with my cell phone cam. no squares spread apart. just the three in a row