good refersh rate?

[olrac]

From what understand, the higher the refresh rate, the better its suppose to be for your eyes. Why is it that when I choose I high refresh rate like 75 or 80 it seems not as clear as 65 or even the adapter default which is 60. It looks real sharp at 60. I'm using a TNT Nvidia 32 mb graphics card with a 19 daytek monitor.

 

[GoSharks]

As you increase refresh rate the pixel clock also goes up in order to draw the pixels on the screen faster. If you monitor video amp is not capable of these higher pixel clocks, video will start to degrade as you increase refresh rates.

And / Or


Some video card manufacturers put RF filters on the output of the video signal. They do this to reduce Radio frequency interference cause by the pixel clock and video signals on the video card. These filters are designed such that they reduce RF interference as you increase the video rate and do virtually nothing at lower signal rates. As you increase the refresh rate, you are increasing the video rate and the filter circuit starts to take affect. This explains why everything looks sharp at lower refresh rate.

Jim Witkowski
Chief Hardware Engineer
Cornerstone / MOnitorsdirect.com


<A HREF="http://www.monitorsdirect.com" target="_new">MonitorsDirect.com</A>

 

[olrac]

Thanks for the great explanation!

 

[sakura26]

I have the same problem, im using Sony CPD-G520 21" and Geforce2MX

this is the problem
1. 1600 x 1200 32b @85hz = text blur
2. 1600 x 1200 32b @60hz = crisp text

is there a way to run my monitor 1600 x 1200 32b @85hz with crisp text ?

what if I change my Video card to Geforce4 4600/Ultra ? is it working ?

 

[Rebe7254]

I had this same problem with my Cornerstone p1460 monitor. The recommended resolution and refresh rate is 1600x1200 and 85 Hz respectively. However, I was running it at 1280x1024 because 1600x1200 is a little too small for me. The picture was nice and crisp at 60 Hz, but at 85 Hz you could definitely tell the blurrines. I had the monitor shipped off last week to get it fixed for other problems, but hopefully they could fix that too. What do you think about it, Jim?

AMD Athlon XP 1900+, Asus A7V333, 512mb DDR RAM
PNY Geforce4 Ti4400, Win2k

 

[GoSharks]

I'm certain the p1460 has the bandwidth to handle 1600 x 1200 at 85Hz, so that excludes #2 in my first post. Could be #1 or just plain poor focus on that particular unit. Unlike other electronics humans tune monitors so some amount of variation is inevitable.

Jim Witkowski
Chief Hardware Engineer
Cornerstone / Monitorsdirect.com

<A HREF="http://www.monitorsdirect.com" target="_new">MonitorsDirect.com</A>

 

[Rebe7254]

Alright, thanks again. It's nice to have such easy access to a person like you!

AMD Athlon XP 1900+, Asus A7V333, 512mb DDR RAM
PNY Geforce4 Ti4400, Win2k