«

<snip>

buyer beware

Only 49 clams to go


"John Hall" <> wrote in message
news:Qvv2b.267636$ ble.rogers.com...
> Yeah, I have one and am very happy. The nice thing is that you can turn
on
> the eye candy and 4x aa and 8 x anistropic filtering, and still get decent
> frame rates.
>
> JK
>
> "Tim" <> wrote in message
> news:biced1$7p5t2$...
> >
> >
> > I have my eye on an OEM Sapphire 9800. Just waiting for Newegg.com to
> drop
> > the price below 200 US clams.
> >
> >
> >
>
>

Can someone explain ... is there a difference between frame rate and refresh
rate?

I know that I generally run at 75 Hz refresh rate.

But I've seen people claiming more than 100 frame rate. I know of no
consumer grade monitor that goes at 100 or more refresh rate. That's what
leads me to think that frame rate is different from refresh rate.

What say, Holmes?

"Tim" <> wrote in message
news:bigm9p$97qst$...
> Only 49 clams to go
>
>
> "John Hall" <> wrote in message
> news:Qvv2b.267636$ ble.rogers.com...
> > Yeah, I have one and am very happy. The nice thing is that you can turn
> on
> > the eye candy and 4x aa and 8 x anistropic filtering, and still get
decent
> > frame rates.
> >
> > JK
> >
> > "Tim" <> wrote in message
> > news:biced1$7p5t2$...
> > >
> > >
> > > I have my eye on an OEM Sapphire 9800. Just waiting for Newegg.com to
> > drop
> > > the price below 200 US clams.

I could be wrong but I think frame rate is the number of frames (clips)
like a movie can show pre second and refresh rate is how many times your
monitor will refresh per second or is that milliseconds. I did not do a good
job explaining but I hope you get the idea.

Randy

"Lester Horwinkle" <> wrote in message
news:A7S2b.2447$...
> Can someone explain ... is there a difference between frame rate and
refresh
> rate?
>
> I know that I generally run at 75 Hz refresh rate.
>
> But I've seen people claiming more than 100 frame rate. I know of no
> consumer grade monitor that goes at 100 or more refresh rate. That's what
> leads me to think that frame rate is different from refresh rate.
>
> What say, Holmes?
>
> "Tim" <> wrote in message
> news:bigm9p$97qst$...
> > Only 49 clams to go
> >
> >
> > "John Hall" <> wrote in message
> > news:Qvv2b.267636$ ble.rogers.com...
> > > Yeah, I have one and am very happy. The nice thing is that you can
turn
> > on
> > > the eye candy and 4x aa and 8 x anistropic filtering, and still get
> decent
> > > frame rates.
> > >
> > > JK
> > >
> > > "Tim" <> wrote in message
> > > news:biced1$7p5t2$...
> > > >
> > > >
> > > > I have my eye on an OEM Sapphire 9800. Just waiting for Newegg.com
to
> > > drop
> > > > the price below 200 US clams.
>
>

refresh rate is the scan rate that can be done by the monitor

Frame rate is the scan rate that can be done by a program (game) running on the
computer.

On Tue, 26 Aug 2003 19:34:06 -0400, "Lester Horwinkle"
<> wrote:

>Can someone explain ... is there a difference between frame rate and refresh
>rate?
>
>I know that I generally run at 75 Hz refresh rate.
>
>But I've seen people claiming more than 100 frame rate. I know of no
>consumer grade monitor that goes at 100 or more refresh rate. That's what
>leads me to think that frame rate is different from refresh rate.

Lester Horwinkle wrote:
> Can someone explain ... is there a difference between frame rate and
> refresh rate?

Yep.

Refresh rate is the number of frames the display draws per second and is
fixed (for any given video mode).

Frame rate is the number of times the screen is rendered per second. So if
the frame rate is half the refresh rate, every other time the display is
drawn, it can change.

> I know that I generally run at 75 Hz refresh rate.

And I, 85Hz at 1600x1200, but drop the resolution to say, 800x600 and my
refresh rate will be 120Hz.

> But I've seen people claiming more than 100 frame rate. I know of no
> consumer grade monitor that goes at 100 or more refresh rate. That's
> what leads me to think that frame rate is different from refresh rate.

Indeed.

The screen can only change when both the display is refreshed, and the frame
is redrawn.

You can redraw the image as fast as you like, but there is little point in
doing it faster than the refresh rate as the monitor has no way of
displaying it. In fact, if you do do it faster than the refresh rate, then
you can get a thing called tearing, where the top half of one frame is
drawn, and the lower half of another frame is drawn within one display
refresh - this locks horrible and is the reason I turn on "wait for verticel
refresh" or "vertical synch". If you turn off vertical synch you can render
as fast as you like, useful for benchmarking.

There is plenty of point in refreshing the screen faster than the redraw, as
the brightness of the phosphor on the monitor (if you have a CRT) decays
over time and this is why you can see flicker. I like to stay above 80Hz
refresh.

Ben
--
I'm not just a number. To many, I'm known as a String...

"Lester Horwinkle" <> wrote in message
news:A7S2b.2447$...
> Can someone explain ... is there a difference between frame rate and
refresh
> rate?
>
> I know that I generally run at 75 Hz refresh rate.

That is the refresh rate of the monitor. It redraws the screen 75 times per
second, and must be synced with the video output of the card. Therefore, the
card controls the refresh rate of it's video output stages.

>
> But I've seen people claiming more than 100 frame rate. I know of no
> consumer grade monitor that goes at 100 or more refresh rate. That's what
> leads me to think that frame rate is different from refresh rate.

It IS different, but not totally unrelated.
the frame rate is how many times per second that a new scene can be rendered
by the card's graphic processor. While it may be possible for the card to
render a new frame of data 100 times per second, the monitor can only
display as fast as the refresh rate. They usually have to be "synced" to a
certain degree to prevent tearing. The tearing is caused by the card
redrawing the scene out of sync with the refresh interval of the monitor. As
I undertstand it, when you turn on Vsync, it forces the card to wait until
the refresh interval to render a new frame. Lastly, there are lots of
monitors that will do 100Hz or better refresh rate.