Windows 7 - Force DVI/HDMI resolutions and refresh rates

First you should describe your problem. Hz related? Resolution related?
One problem I see is that your TV does not have an VGA port, only HDMI. The following resolutions are available when using the PC through HDMI:It's best to use the wide 1360 x 768 resolution, but if you read your TV's user manual, in page 36 there is an interesting note about 1024x768 and 1360x768 not distinguishable when received, so you need to select the “Input Signal” on the Setup menu manually, it will be remembered next time.

Nvidia can also treat your TV as... TV and you would have 720p/1080p signals. No point going further, you don't go to the dentist and tell him that your tooth hurts, without pointing which one

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In reverse:
- NOT.
- That's normal, it follows a different standard (this time, the correct one).
- The culprit it's not "Min V Rate" but "Max. Pxl Clk", and the first thing to try out is to put Safety margin to 0%. If it's still not good, then you should not cheat your Monitor Range Limits.

A 1080p PC signal requires a huge bandwidth, and your device has only 170Mhz. On lower resolutions you can use any timing standard as long as it fits in the Monitor Range Limits. But on high resolutions, using the CVT-reduced blanking is a must, it makes a huge difference in bandwidth.

LCDs do not need blanking intervals and this translates into less bandwidth requirements. Less bandwidth means cheaper components needed by the manufacturer but also overcomes the limits of the interfaces (VGA / DVI/Dual-DVI etc). VESA developed the CVT-reduced blanking standard specially to take advantage of this.

Joke: Samsung really went cheap , +3Mhz would have been enough to pass PED Helper's validation if Safety margin is on 0%(it's point is to provide a headroom, and manufacturers should do the same, but it looks like they dont like this concept).

I believe I said that my part of the guide is geared towards CRT's and similar devices (plasmas and some projectors). Shame on me for not emphasizing it enought. It's not a problem to update the guide for LCD's and recommend CVT-reduced blanking, but I was hoping to skip this technology
Not really, I was waiting for someone to point out the issue and hopefully gaining motivation. Hack, maybe I'll also change my old piece of junk CRT with a LCD after that.

thanks bob for ur answer, but I dont really have a problem I just want my refresh rate to be higher than 60MHz... and my screen size is 1824X1026 at 1080P but the refresh is only 60MHz, I would luv to have at least 70MHz and 75MHz or even 120MHz! since my tv is 120MHz (if thats possible) and lastly I do have a vga input but I use DVI since it is superior...

Thanks for taking some time to check my problem.

I still don't get something : With the data from the EDID and no safety, we can't achieve 60hz with the formula (and therefore in PED). Then... why does 1080@60hz works perfectly and natively in XP and Vista without the need of any trick ?
Are those version of windows "overclocking" my pxl clock by 3mhz or are they using "CVT reduced blanking" ?

And... more importantly... what should I do now ?

Sorry, you can't do that. Your TV has only 60Hz on that resolution(and it's not the recommended one for PC usage but generally it works fine). The highest you can go with the vertical frequency is 75Hz, but not for higher than 1024x768 resolution. The 120Hz thing you sow advertised has to be the internal field processing speed of the panel, but in Windows you only have 60 Hz. Looks like you have been a victim of malicious advertising. How about those 600Hz plasmas? Same deal
They are using "CVT reduced blanking" because it's the only choice in higher resolutions.

You should re-download(same link), I took some time off to create another version geared towards LCDs (based on CVT Standard this time).

Again, thank you very much for your time... really...


I've downloaded the excel sheet again, filled the desired resolution (1920), and it gives me the same "detailed settings" from my edid file. Good.

But it simply tells me to set "60", which i've already tried to do by adding a "standard timing" in PED before and it's not working. (same "not supported" warning screen on my TV)

Is Windows 7 using the "detailed timing" information, therefore calculating 59,934Hz and rounding down to 59 ? (which is supposed to be the problem XP doesn't have)
Am I supposed to change the "detailed timing" tab to overcome this ?

edit : Forgot to mention, i've got an ATI videocard, so no "add custom resolution" trick for me

PED Helper for LCD does it's job then. I really hope you use that version cause it directs you to set CVT - reduced blanking.

Windows uses the detailed timings from the EDID as defined. No rounding happens actually, only the visual display is with less precision (like in Excel).

Yes, you need to change that to the values generated by PED Helper. I have one of your EDID dumps, don't know if it's original, but it has 2 detailed timings defined in Block 1 and Block 2, one of them being custom 1360x768 (incorrect AR, should be 1360x765). Which of them is set to be native in your Display CPL? Maybe it would help to have only one definition on Block 1. But I guess the EDID is fine.

That's the reason everyone asking for help should take 2-3 minutes to write their related My system specs. On nVidia it's a lot simpler to do custom res, timings like the needed CVT - reduced blanking. For Ati, this is a must: catalyst screen (only the reduce DVI thing). Without it, your display will default to CVT and because of those 3Mhz less you get Out Of Range.

Please feel free to read more on DVI/cables/bandwidth on this page DVI compatibility for sticklers.

Hi.I have LG Flatron F900B 19" CRT connected to my GTX260 via VGA-VGA extender + DVI-VGA dongle. Still struggling in adding a custom 800x600@125Hz & 640x480@125 to a resolution list. EDID Designer reports 123Hz is a maximum for this display. Dumped original .dat, can anybody help me to create an .inf file for my monitor? Thanks..*


//sorry for my english, working on that*

Your posted edid is for an Acer V233H LCD monitor, and a strange looking one I might say. Looks like you have edited that one to fit your CRT, am I right? If not, please turn off your LCD before doing edid dumps.
123Hz is the maximum suported value on Standard Timings for all displays.
You can go higher than that in Detailed Timings.
No point on using 125Hz, it's better to use the established 120Hz, plays better with Windows (and better suited if your power line is 60Hz, but I guess you live in a 50hz country).

Review part I and II from my extended guide.

I'm sorry for the wrong file, my prev post is now correct. I have DDC/CI Not supported message in softMCCS, but still interested in 125Hz under 800x600 in win7x64 . Thanks for the help!

P.S:*
125 makes my q3arena to run smoothly for many years), native rate I think. I'm using this display only for q, qw..*

DDC/CI Not supported does not matter.
Like I said, you can't go higher than 123 on Standard Timings, but I did create a Detailed Timing for 800x600@125Hz.
Native/preferred timing.. 1280x960p at 85Hz (4:3)
Modeline "1280x960" 149.500 1280 1376 1512 1744 960 961 964 1008 -h+v
Detailed timing #1....... 800x600p at 125Hz (4:3)
Modeline "800x600" 87.750 800 856 944 1088 600 601 604 645 -h+v

640 x 480p at 120Hz - VESA STD, 800 x 600p at 120Hz - VESA STD,
1024 x 768p at 100Hz - VESA STD, 1280 x 960p at 85Hz - VESA STD,
1280 x 1024p at 85Hz - VESA STD, 1600 x 1200p at 75Hz - VESA STD

Just change the default monitor driver with the one attached, but that will not give you magically 125Hz in 800x600, you need to create a custom resolution for it.
Add Custom Resolution in Windows: 800 x 600 @ 125Hz GTF
Manual Input Active pixels/Front porch/Sync width/Total pixels/Polarity
Horizontal values: 800 56 88 1088 -
Vertical values: 600 1 3 645 +
And for it to work in games, you also need a refresh rate patcher like Refresh Rate Patcher or RivaTuner. It was better if you did this yourself following the guide, it's not that hard, you know...

I think it's time for you to move up at least to 1024x768@100Hz...800x600 on a 19inch with 0.24dot is ... need I say more? It's embarassing for that GTX 260