Here are some picture and inf file (i fill add most import one later there you would see that that XP resolution is limited to 1080p later)..

Monitor specs:

Windows 7 over same cable and Input is working fine:

WIndow XP try over DVI-D dual link to HDMI cable, which probably can work because only single link signal is added to HDMI:

Monitor OSD, here you can see 1280x1440 exactly half resolution probably because of single link to HDMI:

Re: Adventures in Windows XP Ultrawide

Thanks, what exactly means scaling? Does it mean Windows text size or what? Or some image size interpolation for keeping aspect ratio?

Hmm, i afaik there is only one Gefore 750 TI with passive cooling and it has not Displayport at all.. so probably only solution would be some driver hack, because if on same card is working with other OS, is just Nvidias luck of support in old OS..

Is there some active DVI-D to Displayport adapter for 1440p? It would mess and i would need some Dispayport Switch, but still better than nothing, my monitor has only 1 DP input and its used for main graphics card, because of Gsynch, gsynch is working on HDMI only with Geforce 2xxx/3xxx, i have Gefore 1070, so DP is only way.

Here are XP HDMI pictures:

w/ DP 2540x1440 @144Hz possible?

So far best i heard was 85Hz through DP..
Regarding of wikipedia:
https://en.wikipedia.org/wiki/DisplayPort#Ref … _standard_video
If i read this correctly, it means max DP 1.0 - HBR mode limit..

http://us.download.nvidia.com/Windows/368.81/ … tes-updated.pdf

Unsupported Features Under Windows XP
DisplayPort 1.2 functionality is not supported, including increased bandwidth (HBR2
mode) and multi-display streaming.

I checked Radeon 7750 which has passively cooled models too.. but its performance is ~half of Geforce 750 Ti and anything faster would be noisy.

your drivers might be too new, Sounds strange but the older ones are better. Try to find the oldest driver that will support that card as a test and see if you can make a custom resolution to run. You actually can use HDMI port without 1080p restrictions on much older drivers. If I can think of them I'll tell you but I'm pretty sure they are older than 2xx maybe 18x or something. Might be 185 or older.

Hmm, Geforce 750 Ti was realeased Feb 29 2014 it you cant use older drivers for sure, unless is possible to force them on other card types..
When i try to use:
https://www.nvidia.com/Download/Find.aspx

Oldest i get is :
GeForce Game Ready Driver NVIDIA Certified 353.62 July 29, 2015

So there would be some delta.. 1 year for something a bit older, but i would be expect older than 3xx, because i thing that this series was there from Geforce 9xx launch..

GeForce 335.23 drivers are the earliest i could find with official support Unfortunately thats after nvidia changed the drivers to no longer allow custom HD resolutions. Maybe around after 314 they changed it.

It seems that Techspot has driver archive even with older Nvidia drivers..
https://www.techspot.com/drivers/manufacturer … idia_geforce/3/

Litter summary:
332.21 - no Geforce 750 TI support, only earlier 7xx cards
334.89 - has Geforce 750 Ti support, but not Geforce 9xx support..
340.52 - still not Geforce 9xx
353 - Seems to be first with Geforce 960 support
355.69 - Seems to be first with Geforce 950 support
So 314 driver is not possible to use with these cards..

A little bump on this. nVidia drivers for WinXP does not support HBR2 for WinXP (according to official release notes), so certain things won't work, namely 4K, which results in a blank screen on initial reboot after installing drivers that I have to manually edit the registry from Safe Mode to 1080p to get it working.

Also, there's a side effect with WinXP drivers. In a WinXP/Win7 dual-boot scenario using nVidia video card, booting to WinXP would somehow make the video card stuck at HBR1 mode. With a recently acquired monitor that could do 4K@120Hz (in my case, Asus XG27UQR), I would be locked out of 4K@60Hz and 1440p@120Hz even on Win7, that only 1080p@60Hz/1440p@60Hz are accessible. AFAIK this persists across system reboots and even DP cable hotplugs. Forcing the desired resolution (such as 1440p@120Hz) in this case would not work correctly, either (blank screen or reduced color ranges like 6-bit 4:2:0).

For now there's an easy workaround: Try extract video BIOS using GPU-Z on Win7, which now pauses/restarts the driver during the process. After the driver restarts, all usable resolutions would be accessible and functional. Don't know exactly what happened but it seems this procedure somehow reset the video card entirely so it operates at HBR2 mode again.

NOTE: This is purely on DisplayPort connections (should also apply to active DP-HDMI adapters as it counts as a DP connection to the video card). Not sure about pure HDMI situations, such as using native HDMI ports or maybe passive DP-HDMI adapters.

LATE EDIT (Oct 2022): Guess the problem with Windows XP driver is that the default 1080p 120Hz option is somewhat flawed, resulting in a glitched output. At least for HDMI (active DP-to-HDMI in my current configuration), creating a custom resolution of 1920x1080 using 120Hz will work fine.

As for the stuck-on-HBR1 issue, I don't seem to have the issue anymore, with an active DP-HDMI connection and reliable cables. That issue might have been a pure DP issue or was mostly cable-related.