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Refresh rate issues


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#1 Dvslytwstd

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Posted 02 May 2013 - 12:31 PM

I just got the asus vg248qe monitor and i cant seem to get the hz past 60 this monitior max is 144hz witht he dual link dvi cable but i cant use that since i have it connected to my laptop witch is the asus g75vw. i just want to get to 120hz since i wont be able to connect through the dual link dvi to get the 3D/144hz. Any ideas would be great

 



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#2 jaypro

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Posted 02 May 2013 - 12:43 PM

How are you connecting your laptop to the dual link DVI cable? You need a Active DP to dual link DVI adapter (those things cost big $$ for an adapter).



#3 GoodBytes

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Posted 02 May 2013 - 04:47 PM

HDMI version used in your laptop OR the HDMI cable used doesn't support more than 1080p at 60Hz, is what it looks like.

If it's not the cable, ASUS probably used an old version of HDMI, due to the high royalty cost needed for the latest and greatest version of HDMI. This is common thing. And even then, I RARELY ever saw HDMI on either desktop graphic card and laptop, actually work well like DVI or DisplayPort. HDMI was not designed for computer it was designed for home entertainment (TV's, Blu-ray, etc. is what I mean).

I recommend to people to always looks for DisplayPort on a laptop (or dual link DVI if you can have that, but that's very rare). DisplayPort works perfectly like DVI. It's only downside is if you need to drop DisplayPort down to dual link DVI, then you need an expensive adapter/converter, but single link DVI (1920x1200 @ 60Hz max) then just an inexpensive adapter one is all you need. Today, more and more monitors have DisplayPort, so I don't think its much an issue.
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#4 Alex(PlayMedium)

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Posted 03 May 2013 - 03:37 AM

You could try to set this as a custom resolution: 1280x720@120hz.

I don't know how to do it on an nvidia card, but I think it is easy, you'll have to google it, it is a simmilar process as downsampling, just set it to the res and refresh rate I wrote before. HDMI should be capable of 720p@120hz, can't guarantee anything tho. Also, don't worry about 144hz, i have a 144hz monitor and there is not a noticable difference between 120hz and 144hz ;)


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#5 Dvslytwstd

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Posted 07 May 2013 - 04:22 PM

im using an hdmi cable. ive tried the custom resolution and is says "out of range" :mellow:. im pretty sure it my graphics chip im running the gtx660m.



#6 Dvslytwstd

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Posted 07 May 2013 - 04:24 PM

would i have better results using the display port or hdmi?



#7 GoodBytes

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Posted 07 May 2013 - 04:25 PM

DisplayPort.


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#8 Dvslytwstd

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Posted 16 May 2013 - 02:56 PM

would i get a better refresh rate using at display port?



#9 Dvslytwstd

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Posted 16 May 2013 - 02:58 PM

or am i just screwed because i have the gtx660m



#10 GoodBytes

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Posted 16 May 2013 - 02:58 PM

If the monitor has DisplayPort, then yes.

But if the monitor does not, and you'll use a converter down to DVI, you'll only get single link DVI. Which means that you have at best 1920x1200 @ 60Hz.

You need an active powered DisplayPort to Dual Link DVI adapter. Those are costly, and I have no idea if the adapter support 120Hz+, as you have a circuit inside.


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#11 Dvslytwstd

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Posted 16 May 2013 - 03:08 PM

it has a display port so ill try that. ive alread tried a dual link dvi adapter from a hdmi and no luck there. im just worried the the gtx660m cant handle anything more then 60hz



#12 ClutchHunter

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Posted 16 May 2013 - 03:09 PM

Try the Display Port as GoodBytes said. HDMI can't handle the bandwidth that anything above 1920x1080/60Hz produces. If your monitor hasn't got a Display Port input, then your only hope is an adapter, but I'll warn you now - I've found them to be extortionate in price. 


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#13 Dvslytwstd

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Posted 16 May 2013 - 03:10 PM

it has a display port, is any cable better then the other like brand wise?



#14 Dvslytwstd

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Posted 16 May 2013 - 03:14 PM

do you think the nvidia gtx660m can support 120hz?



#15 GoodBytes

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Posted 16 May 2013 - 03:22 PM

Of course it can. It also support 10-bit colors per channel (red, green and blue are channels), instead of the standard 8-bit


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#16 Dvslytwstd

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Posted 16 May 2013 - 03:26 PM

thank you for all of your help!!






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