75hz or 85hz monitor refresh rate?

  CurlyWhirly 20:06 18 Jul 2004

I have a monitor that can display a range of refresh rates which are 56hz, 60hz, 70hz, 72hz, 75hz and 85hz.
I find that anything below 75hz causes the screen to flicker and me to get a headache so I am currently running at 75hz which is fine.

What I was wondering was if I went for 85hz does this put extra work on the graphics card?
What I mean is if you run a graphic intensive game (like Toca Race Driver 2 for example) on 85hz would you get slower frame rates than my current setting of 75hz or would it make no difference?
Just curious!

  CurlyWhirly 21:46 18 Jul 2004


128mb - it is a Radeon Pro 9800


  Fruit Bat /\0/\ 21:51 18 Jul 2004

You should always run the refresh rate at the highest the monitor can take. It shouldn, really affect your card enough to notice.

  CurlyWhirly 19:35 19 Jul 2004


I didn't know that the memory on board (128 mb in my case) is directly related to the refresh rate?
What I mean is what you said in your last thread and I quote "That card with that much ram should play with 85hz and more."

  GaT7 22:22 19 Jul 2004


My humble 32Mb graphics card can support 85hz, so I don't think it's 'directly' related to the amount of memory (but I may be wrong).

To learn how your graphics card is related to the refresh rate read this helpful article - click here.

An excerpt:

"The RAMDAC is the device in the video card that is responsible for reading the contents of the video memory, converting the digital values in memory into analog video signals, and sending them over the video cable to the monitor.

The RAMDAC's ability to translate and transfer this information directly controls the REFRESH RATE for the video mode it is operating in. The refresh rate is the number of times per second that the RAMDAC is able to send a signal to the monitor and the monitor is able to repaint the screen..."

My card's RAMDAC = 300Mhz (source: click here).

Your card's RAMDAC = 400MHz (most probably - check with your manufacturer's specs).

Doesn't seem much in it, does it? HTH : ) G

  GaT7 22:26 19 Jul 2004

Another excerpt from the same link that may answer your query about frame rates vs. refresh rates:

"Note: Do not confuse the refresh rate with the term "frame rate", often used for games. The frame rate of a program refers to how many times per second the graphics engine can calculate a new image and put it into the video memory. The refresh rate is how often the contents of video memory are sent to the monitor. Frame rate is much more a function of the type of software being used and how well it works with the acceleration capabilities of the video card. It has nothing at all to do with the monitor."

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