windows say refresh rate always at 59hz, ati 4570 say 60hz ???


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hello all
i check my laptop dell 1558(win7 64b) for monitor mode,windows always stay at 59hz but the CCC ati card (4570) display mode at 60hz.i change the rate to 60hz.it will turn to 59hz .anyone can answer me why???
 
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TrainableMan

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What is "monitor mode" ? Are you attaching your laptop to a monitor? What is the monitor make/model?

Is the difference in MHz causing a problem?
 
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i mean display mode(current display mode on diagnostic tool),not connected to a monitor.
when i check current display mode,my catalyst control center always show that mode on 60hz but windows say 59hz, i turn it to 60hz on windows mode by change value on monitor tab( screen resolution -> advanced settings ) but its automatic return to 59hz( ati card says 60hz)
i dont know why?
can u solve this problem for me?
 
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to: TrainableMan

I think it is cause this this problem :
I play offline game Need4speed hotpursuit2 on my old xps dell (win7 home,core 2 dual p8700,4g ram,ati 36xx..),it s working so smooth.
And something wrong (lag and not smooth) with my new one dell 1558 (win7 home, core i5 520,4g ram,ati 45xx..) even i reinstalled that game, driver ati or win7..
You can tell me the reason why my dell 1558 got lag??? i think with that configue,dell 1558 is more power than xps.
thanks anyway
 

TrainableMan

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You might try updating your BIOS and drivers.


The Dell Studio 15 has had 6 BIOS updates in the last 7 months. The latest BIOS I see is 2010 Oct 15 BIOS A11

There is a a media accelerator driver from 2010 Jan 11

And an ATI Mobility driver from 2010 Jul 28

In fact there are a lot of items listed for the studio 15.
I suggest you write Dell support about your issue because it looks like maybe you found another.
 
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You might try updating your BIOS and drivers.


The Dell Studio 15 has had 6 BIOS updates in the last 7 months. The latest BIOS I see is 2010 Oct 15 BIOS A11

There is a a media accelerator driver from 2010 Jan 11

And an ATI Mobility driver from 2010 Jul 28

In fact there are a lot of items listed for the studio 15.
I suggest you write Dell support about your issue because it looks like maybe you found another.
thanks so much trainableman,i ll write to dell support my problems
 
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TrainableMan

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Well I do suggest you also update the BIOS and drivers I listed to see if it helps. It is possible they solved it.
 

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