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cant get to 120hz in windows with NVIDIA

post #1 of 8
Thread Starter 
I've seen a similar topic here about 120Hz not showing as an option (60hz highest showing) however the other topics got very specific in settings in CCC and not the NVIDIA software.

Case:

Pair of NVIDIA GTX590: First question, are all DVI ports DVI-D on my cards? IE: can I use any jack to try to achieve 120Hz?
TV: 42LE5400: LG 42" LED-TV 1080P 120Hz: Can't find any form of driver disk for this; LG only supplies a Firmware download
Currently I have an DVI to HDMI adaptor between the two (DVI connection on GPU, HDMI on TV).

I tried installing a driver for an LG moniter that also supports 120hz, but 60hz is the most i can get windows to show me for options. I did find where to make a custom resolution in Nvidia control panel, and per suggestions found during massive google searches found to set the Refresh rate to 120hz and then click the Timing drop down and additionally adjust the refresh there to 120.001 Hz. When clicking Test, I get an error saying my monitor doesn't support this refresh rate.


Also to potentially complicate the matter (and maybe I'll wish I never said this) but I'm running under Windows 8 Development Preview. For the record though; the NVIDIA Win7 drivers installed nicely and graphics in Battlefield BC2 and Secondlife look fantastic; so I highly doubt Windows 8 will be part of the issue. I had the same problem before under Windows 7, never got it over 60Hz.

Help greatly appreciated... Downloading Rage right now... I have about 4 hours until 21GB is downloaded :-p
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Monster8
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post #2 of 8


Is that what the back of your cards looks like? If so, those are all the correct connector.

Are you sure that TV can display true 120hz and not just interpolated 120hz (ie, 60hz input, displays each frame twice)?

I went through the manual and no where in it does it say it can support true 120hz. On page 51 it lists 1920x1080@60hz as the maximum (though in that example i think they are using HDMI, but i couldn't find a list for dual-link DVI anywhere).

If you know for certain it supports true 120hz then you can get a program called RefreshLock and then set it up to force 120hz at 1920x1080. I have no idea what will happen if you try to force that refresh rate if your screen doesn't support it, so use at your own risk.
post #3 of 8
Thread Starter 
tyvm for the reply!

yes the gpu's have 3 connectors like that. i'm using an adaptor that came with my gpu's that converts DVI to HDMI, and i'm connecting to an HDMI port of the TV; it has no DVI connector at all;

what i'm gathering from reading more on the subject of 120hz is that most manufacturers advertising 120hz are simply inserting their own interoplated inbetween frame like you said.

i'm guessing now that without DVI-D on the TV it'self it's not going to support a true 120hz signal where i'll actually see 120fps of rendered frames but actually never more than 60hz refresh from the video cards.

case closed; incompatible hardware. time to look for a 1600p monitor with DVID and 240Hz advertised )
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Monster8
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post #4 of 8
Oh right, the fact that that TV doesn't have a displayport or Dual-link-DVI is a dead give-away that it's not true 120hz.
post #5 of 8
There's not too many 1600p monitors to choose from and I haven't seen any monitors with 240hz refresh rate, but the 3d computer monitors are true 120hz.

All tvs are gonna be 60hz for input.
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post #6 of 8
Quote:
Originally Posted by soymilk View Post
There's not too many 1600p monitors to choose from and I haven't seen any monitors with 240hz refresh rate, but the 3d computer monitors are true 120hz.

All tvs are gonna be 60hz for input.
I'm sure that was just a joke
post #7 of 8
You need a true 120hz display like others have said. Check out the Samsung 950d
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post #8 of 8
Quote:
Originally Posted by rpurinton View Post
time to look for a 1600p monitor with DVID and 240Hz advertised )


There are no 1600p 120hz monitors - there are no 1440p 120hz monitors - there arent even any 120 hz 1200p monitors - there are about 7 or 8 120hz 1080p lcd monitors...

Also any monitor of 1600p costs nearly $1000 for the absolute cheapest one, when the time comes that they DO support 120hz 1600p, you will probably be looking at a $2000+ monitor for the starting point

1600p 240hz is out of the question entirely. There will probably be a new technology of image rendering entirely replacing monitors before theres a 1600p 240hz monitor...
Edited by jacobrjett - 10/19/11 at 3:56am
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