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***ToastyX*** · 11-05-2014, 11:58 AM

(11-05-2014 07:08 AM)bcec Wrote: Yeah unfortunately, when you create a 23+23.976 custom resolution, nVidia saves this under 24, but still applies it to 23. Since it is saved under 24, nVidia doesn't let you modify 24 anymore.

Similarly, when you create a 29+29.76 custom resolution, nVidia saves this under 30, and applies it to 30. See nvidia forums

Try saving 24 Hz as 25 Hz and 23.976 Hz as 24 Hz.

***ToastyX*** · 11-05-2014, 12:00 PM

(11-05-2014 11:02 AM)Aarinz Wrote: Hey there Toasty,

My "Custom Resolution" button in the Nvidia control panel is greyed out, and I figure this is due to the Integrated Graphics card in my computer.

How do I use CRU or enable the customs resolution in Nvidia in this case?

Integrated graphics card is Intel® HD Graphics 4000 and my Nvidia card is GeForce GT 640M.

You have to use Intel's CustomModeApp.exe: http://www.intel.com/support/graphics/sb/CS-029478.htm

Aarinz · 11-05-2014, 03:13 PM

(11-05-2014 12:00 PM)ToastyX Wrote:
(11-05-2014 11:02 AM)Aarinz Wrote: Hey there Toasty,

My "Custom Resolution" button in the Nvidia control panel is greyed out, and I figure this is due to the Integrated Graphics card in my computer.

How do I use CRU or enable the customs resolution in Nvidia in this case?

Integrated graphics card is Intel® HD Graphics 4000 and my Nvidia card is GeForce GT 640M.
You have to use Intel's CustomModeApp.exe: http://www.intel.com/support/graphics/sb/CS-029478.htm

I can't set a refresh rate of 80 using the intel one, but I remember I could easily set it to 80 last time using Nvidia's one on a different computer.

Is there anything I can do to get 80hz refresh rate?

JonnyRedHed · 11-06-2014, 02:02 PM

Hi, I just wanted to check back in and ask about this Nvidia DSR (dynamic Super resolution) and using CRU.

I've not been gaming much this last 6 months, but have tried out the new Call of Duty AW. Using DSR just to 1440p (1.78x) with my MSI gtx 670 PE/OC. And still trying to get my plasma TV to hit 75hz which I know it can.

Once I added that 1.78x DSR resolution I had to edit my CRU profile removing my downsampling 1440p@75hz entry and reboot. Just leaving the one extra CRU entry of 1080p@75hz (TV spec is 60hz LG 50inch Plasma - but it easily does 75hz).

Then the game showed 1440p @ 75 hz option. Which surprised me it wasn't harder to do. Seems to work. I couldn't use borderless window because that seems to break the DSR on my set up and it reverts back to 1080p @ 75hz, showing it had greyed out (locked) the 1440p option. The game has some issues for me full screen in cut scenes, but not borderless windowed. Swings and roundabouts Smile

I'm just curious to find out what issues if any others have run into when using the new Nvidia DSR along side CRU.

DSR certainly works well, and I smooth at around 33% on my gtx670 @ 1440p (1.78x). But for games that won't work with DSR I'd have to add back in my 1440p entry into CRU and reboot maybe.

***ToastyX*** · 11-06-2014, 04:53 PM

(11-05-2014 03:13 PM)Aarinz Wrote: I can't set a refresh rate of 80 using the intel one, but I remember I could easily set it to 80 last time using Nvidia's one on a different computer.

Is there anything I can do to get 80hz refresh rate?

80 Hz at what resolution? What type of port? DVI? HDMI? DisplayPort?

Single-link DVI is limited to 165 MHz pixel clock without driver modifications, and I don't have a patcher for Intel.

HDMI often has the same limit unless the EDID includes HDMI support with a higher limit. With CRU, importing the hdmi.dat file would include the higher limit.

The pixel clock is the total number of pixels per second (horizontal total * vertical total * refresh rate), so reducing the totals will reduce the pixel clock. You might be able to get 75 Hz working if you reduce the totals. CRU has an "LCD reduced" timing option for this. Intel's advanced custom timing options don't seem very user-friendly, but you can use CRU to calculate the values and copy them over.

You could also try using CRU, but I don't know if it will work with your setup. Intel's driver didn't support EDID overrides in the past, but I don't know if that has changed with newer drivers. I don't have any Intel systems to check myself.

Aarinz · 11-06-2014, 05:42 PM

(11-06-2014 04:53 PM)ToastyX Wrote:
(11-05-2014 03:13 PM)Aarinz Wrote: I can't set a refresh rate of 80 using the intel one, but I remember I could easily set it to 80 last time using Nvidia's one on a different computer.

Is there anything I can do to get 80hz refresh rate?
80 Hz at what resolution? What type of port? DVI? HDMI? DisplayPort?

Single-link DVI is limited to 165 MHz pixel clock without driver modifications, and I don't have a patcher for Intel.

HDMI often has the same limit unless the EDID includes HDMI support with a higher limit. With CRU, importing the hdmi.dat file would include the higher limit.

The pixel clock is the total number of pixels per second (horizontal total * vertical total * refresh rate), so reducing the totals will reduce the pixel clock. You might be able to get 75 Hz working if you reduce the totals. CRU has an "LCD reduced" timing option for this. Intel's advanced custom timing options don't seem very user-friendly, but you can use CRU to calculate the values and copy them over.

You could also try using CRU, but I don't know if it will work with your setup. Intel's driver didn't support EDID overrides in the past, but I don't know if that has changed with newer drivers. I don't have any Intel systems to check myself.

Thanks for the reply, I've managed to get 75hz using the timing from CRU. Is it possible to check whether or not my HDMI supports a higher limit on the pixel clock?

***ToastyX*** · 11-06-2014, 10:41 PM

(11-06-2014 05:42 PM)Aarinz Wrote: Is it possible to check whether or not my HDMI supports a higher limit on the pixel clock?

If you can't add higher resolutions or refresh rates, then it's probably limited to 165 MHz. You would need an EDID override and/or modified drivers to get around that, but I don't have anything for Intel.

Aarinz · 11-07-2014, 12:13 AM

(11-06-2014 10:41 PM)ToastyX Wrote:
(11-06-2014 05:42 PM)Aarinz Wrote: Is it possible to check whether or not my HDMI supports a higher limit on the pixel clock?
If you can't add higher resolutions or refresh rates, then it's probably limited to 165 MHz. You would need an EDID override and/or modified drivers to get around that, but I don't have anything for Intel.

So I'm able to add 80hz using the Intel custom resolutions, but then after applying my monitor will display "Not optimum mode: 1920 x 1080 60hz".

Is there a way to ignore this or is it better that I don't force the monitor?

***ToastyX*** · 11-07-2014, 03:26 AM

(11-07-2014 12:13 AM)Aarinz Wrote: So I'm able to add 80hz using the Intel custom resolutions, but then after applying my monitor will display "Not optimum mode: 1920 x 1080 60hz".

Is there a way to ignore this or is it better that I don't force the monitor?

That sounds like a Samsung monitor. If so, there's no way around it. Most Samsung monitors only allow up to 77 Hz. You mentioned getting 80 Hz to work before, but I don't know how you did that.

Aarinz · 11-07-2014, 03:33 AM

(11-07-2014 03:26 AM)ToastyX Wrote:
(11-07-2014 12:13 AM)Aarinz Wrote: So I'm able to add 80hz using the Intel custom resolutions, but then after applying my monitor will display "Not optimum mode: 1920 x 1080 60hz".

Is there a way to ignore this or is it better that I don't force the monitor?
That sounds like a Samsung monitor. If so, there's no way around it. Most Samsung monitors only allow up to 77 Hz. You mentioned getting 80 Hz to work before, but I don't know how you did that.

Ah I see. If so, then thank you for all the help. The last time I did it I just used Nvidia's control panel to change the refresh rate, and there were no issues whatsoever.