Hi, I know some years about Yas patch, but for my case it does only a one half. It unlocks the pixel clock but the drivers contains another hardcoded artifical limit to Yres only up to 1600 rows. And I'm still interested to run full 4k res, mean 3840 * 2160 at 60Hz that is still impossible. I started to disassembly nvidia driver to see what Yas did and look if the 1600px limit is not somewhere close around but it's a lot of code and I don't have enough time to dedicate it to hacking nvidia crapware...

Hi Rayer,

It is possible to get 600MHz bandwidth by modifying the nv4mini.sys and nv4disp.dll files. If you are following Yas instructions, then instead of hex value for 340000 (20300500, little endian) you would use hex value for 600000 (C0270900, little endian). Yas instructions are in big endian format.

I know, I already unlocked to 600Mhz but as I wrote above there is another limitation of Y-res that nobody hacked yet...

Hi, Can you share the 600MHz patched nv4mini.sys and nv4disp.dll files for xp x64 ?
I tryed to patch those myself but the Nvidia driver didn't load with the new files .. Whould like to try 1080p 240hz on a 980 😀

I myself patched only 32b version, not 64b.

Is there any progress? Did someone implement the patch to 368.81 drivers?

I made a post about enabling the custom resolutions option in the 368.81 version Control Panel: Enabling the custom resolutions option in Nvidia 368.81 Control Panel.
If someone could patch the 368.81 x86 driver (or provide the instructions to do it) to enable higher refresh rates i would be really grateful. I know where to find the value that corresponds to 135 mhz and change it to 600mhz, but i cannot implement the other edits 'Yas' did to the 355.98 one in the 368.81 version.
I think that being able to overcome the Nvidia clock pixel limit in its latest Win Xp compatible driver (which purportedly offers a slight performance boost in a couple of cases) and also being able to use the custom resolutions option with it would be really helpful for many users.

Well i patched the 368.81 files to 600mhz, stripped the signature with cff explorer and also updated the checksums with the same tool. Didn't manage to apply anything over 60hz (at 1080p) refresh rate though through Nvidia's custom resolutions option, not even with cvt-rb. Also tried the 355.98 driver with its patched files. 120 hz works fine. Patched again those files to 600mhz, updated their checksums, 180 mhz option at 1080p (my monitor's max) shows up to windows control panel, but does not work when selected, nor does with custom resolutions option from Nvidia control panel, even again with cvt - rb. So it seems that with either driver version i am limited to 120 hz at 1080p, which i already had with Dp. Monitor is Aoc C24G42E.

Do you have some monitor with more than 1600p to try remove the height limit?

I am afraid not. Did you manage to run your monitor at more than 120hz refresh rate with the files patched to 600000?

I don't have a chance to test on such high-refresh rate monitor, I only did some test on 4k monitor where I reached highest freq. 89Hz at 3840 x 1600 if remember well...

I have a 1080p 240hz monitor for test but on XP x64, if you explain me how to patch 355.98 or 368.81 to 600mhz, will tell if 120hz+ is an os or driver limitation. Or can you share your patched 368.81 ? will install XP x86 on another SDD.

There is an os limitation certainly. I have never encountered someone claim more than 144 hz 1080p on Win Xp. Even with the 600mhz clock patch, i think you will either achieve 120 or 144 hz at 1080p depending on the gpu and monitor combo (My monitor is a 180 hz capable one).
I have deleted both patched driver versions, cause i didn't achieve a higher refresh rate than the 120 hz i already had with Dp, but i can patch them again pretty easily when i have the time and upload them for you to test.