Apparently 120hz is the most 9600 can do? https://web.archive.org/web/20060424104631/ht … 0pro/specs.html

You need to make custom resolutions if you want to do alternate refresh rates. The card has a 400MHz RAMDAC which should let you get 1920x1080 at 144Hz over VGA and have little bit room to spare. Over DVI you will not get anywhere near, the DVI outputs are 165MHz only and can only do 1920x1080 at 60Hz with reduced blanking, dual link lets you get more but it will not help HDMI which is single link only.

My monitor only has displayport and hdmi so I have to use a dvi to hdmi adapter to hdmi cable.

So I guess I'm doing pretty good @ 120hz 1024x768 anyway then. It looks fantastic as is.

Found a 1993 sony trinitron crt tv. Its connected to the s-video adapter to rca now. the tv runs fine @ 200hz even though its rated for 60hz. i have the screen saver set to 7 minutes to prevent burn in. so the card is capable of 200hz via analog signals. i wonder if vga could do 200hz? not that i could ever find a 200hz crt anyway 🤣.

The S-video (and any other TV connection) output is always scaled to 720 x 480i60 or 720 x 576i50 depending on if you need NTSC or PAL output, it is absolutely not going to be showing you 200Hz.

Most monitors I see have limit at 150Hz, even though their deflection system might allow more. My Nokia 445ZA has 110kHz deflection which is capable of 200Hz at 640x480, but the CPU in the monitor rejects anything that is higher than 150Hz.

the interesting thing is, the response time moving windows around etc.. is much faster when i have 200hz selected vs 60hz. 60hz is also much harder on the eyes. how do i verify the actual tv refresh rate? thanks.

Refresh rate on TV is gonna be 50 or 60Hz depending on if you feed it PAL or NTSC signal and it will *always* have 15.625 or 15.750kHz line rate, which means the resolution is fixed (100/120Hz TVs run at double the line rate, but they still only accept SDTV input which they digitally frame double before outputting). Vast majority of the TVs are not multisync and especially not over composhit or S-video connection which is only able to transfer 240p/288p/480i/576i signal with only very mild deviations. Video card outputs are always 720 x 486i/576i on their TV out over composhit/S-video as per ITU BT.601 spec. vast majority of TVs will reject anything that isn't.

Bear in mind that TVs use much slower phosphors than computer monitors, because they must show interlaced broadcast content and to reduce flicker the phosphors have higher presistence.

A ghetty way is using a phone etc. to record the buzzing sound that comes from the TV and do a spectrogram on it, you will see the harmonics of the noise from deflection system. There should be a 50/60Hz peak with a number of harmonics and als, a 15.625/15.750kHz peak. To properly verify the frame rate you need an oscilloscope or perhaps a multimeter that can show frequency and measure the frame amplifier input and/or output inside the TV, but you can also measure the video signal directly (multimeter will not help with the video signal).

Great info, but when i move a window around on the tv it moves even faster than my lenovo g27-20 @ 120hz. there is a difference between when i select 60hz and when i force 200hz. '200hz' (or whatever it really is) has less flicker. if i select 150hz it looks exactly the same as the 200hz selection. But if I select 120hz I start to see a slower response compared to '150' or '200'hz.

The CRT has naturally faster response time than your monitor does, partially due to how the kinescope itself works and partially due to how our eyes perceive the light. It also lacks latency between video input > video output (or well, there's some propagation delay through the chips etc. but it is measured in microseconds in the very worst case). The monitor you have is an LCD and it has a scaler inside it that has to work with all inputs that ale not at the panel native resolution, which will add processing latency the CRT simply doesn't have due to lacking any digital image processing chain, in addition the molecules in the LCD panel cannot move very fast, even in the monitors than can do high refresh rates.

The video signal is absolutely not going to be more than 50 or 60Hz, and that 1993 TV is absolutely not going to be able to sync to it if it was different. If you can tell me the exact model I can look into the service manual and see exactly what it can and cannot do.

One thing I will say is whatever the refresh rate is, it has better color and is much brighter than my $300 g27-20. I am going to try and find a crt that will do 85hz @ 1024x768 again. i used to own a gateway vx730 that did 85hz and also a Hewlett Packard mx70 that did 85hz. i can't believe the system totally lied to us trying to sell us the bs that lcd is somehow better than crt. we've fallen greatly since those crt days!