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Pascal GPU support in WinXP

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Reply 40 of 71, by SupraGSX

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Andalu wrote on 2026-10-05, 13:05:
I'm referring to resolutions higher than 1920 x 1080 which don't show the desktop correctly. Below the same XP desktop with the […]
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SupraGSX wrote on 2026-10-04, 22:35:

I'm not following you. If you select a higher resolution and you go to a game and try to play in that higher resolution what happens?

I'm referring to resolutions higher than 1920 x 1080 which don't show the desktop correctly.
Below the same XP desktop with the GTX960 connected to the HDMI port:

1920 x 1080 (desktop OK)
https://ibb.co/YFCXgkg4

2560 x 1440 (desktop zoomed in to the right and down. The CPU-Z and Display Properties windows are no longer visible unless you move the mouse to the right edge of the screen.)
https://ibb.co/MJh5QGs

I hope I've clarified what the problem is. In this regard, here is a screenshot captured on the same machine with driver v368.81 and the patched nv4_mini.sys and nv4_disp.dll files where the 3840 x 2160 resolution works properly:
https://ibb.co/MkcfVGvg

The most obvious issue is XP thinks you are connected over DVI. DVI single link only goes up to 1920x1080 so if you're saying you've got 4k out of this setup you're obviously not really connected via DVI and it has no clue how to scale your monitor.

I put the topography section in the control panel so you can edit your monitor edid just for this type of scenario.

You're not using any converters or anything right?

Reply 41 of 71, by Andalu

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SupraGSX wrote on 2026-10-05, 20:47:

The most obvious issue is XP thinks you are connected over DVI. DVI single link only goes up to 1920x1080 so if you're saying you've got 4k out of this setup you're obviously not really connected via DVI and it has no clue how to scale your monitor.

I put the topography section in the control panel so you can edit your monitor edid just for this type of scenario.

You're not using any converters or anything right?

There isn't much I can change in the topology section:
https://ibb.co/fYyBcb3H

In my tests, I have always used direct HDMI-to-HDMI and DP-to-DP connections.

Reply 42 of 71, by SupraGSX

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https://github.com/SupraGSX/Forceware-382.69/ … 2.69-2026-10-06

Download this version. Install by going into custom installation and clicking clean install. Use a displayport connection. If you still have issues go into topography and export the edid and send it to me. I'll clone it on my monitor and see if I can replicate your issue.

Reply 43 of 71, by Andalu

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SupraGSX wrote on 2026-10-06, 20:39:

https://github.com/SupraGSX/Forceware-382.69/ … 2.69-2026-10-06

Download this version. Install by going into custom installation and clicking clean install. Use a displayport connection. If you still have issues go into topography and export the edid and send it to me. I'll clone it on my monitor and see if I can replicate your issue.

I tried the Forceware 382.69 (10-6-2026) version on the GTX 960 connected to the DP port, and it works!!!
Thank you so much!!! 😉

Here's an image:
https://ibb.co/ynCCdmY2

It also worked on a Quadro M2000 (GM206, like the GTX 960):
https://ibb.co/dwFN5jYL

As a test, I also connected the GTX 960 to the monitor using a DP to HDMI cable, and the 3840 x 2160 resolution is achieved just the same.

Unfortunately, the maximum resolution for the HDMI to HDMI connection is still 1920x1080.

Reply 44 of 71, by SupraGSX

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Andalu wrote on 2026-10-06, 22:21:

Unfortunately, the maximum resolution for the HDMI to HDMI connection is still 1920x1080.

I'm glad the new version fixed your DisplayPort issue. I'd still like to troubleshoot your HDMI problem some if you're willing to help? If so please connect via HDMI and send me a copy of your EDID. You can export it from the topography section in control panel. It will help me see if there's an unaccounted for condition the monitor is exposing.

Reply 45 of 71, by The Solutor

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Out of curiosity, given I don't own one of the supported cards ATM

Is HW video decoding functional in XP? Including HEVC/H265?

Reply 46 of 71, by RedCharles

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1050 Ti support.

If I got one could we troubleshoot it here?

Reply 47 of 71, by RetroGamer4Ever

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Given the usefullness and appeal of this, I see no reason why not, but prepare yourself for making screencaps and info-dumping, because you're gonna have to do a bit, if trouble occurs.

Reply 48 of 71, by Andalu

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SupraGSX wrote on 2026-10-06, 23:32:

I'm glad the new version fixed your DisplayPort issue. I'd still like to troubleshoot your HDMI problem some if you're willing to help? If so please connect via HDMI and send me a copy of your EDID. You can export it from the topography section in control panel. It will help me see if there's an unaccounted for condition the monitor is exposing.

I would have preferred to send you the EDID via a private message, but I don't have enough posts to do so.
So I'm reporting the contents of the monitor's EDID for the HDMI-to-HDMI connection below:

00 ff ff ff ff ff ff 00 1e 6d c7 77 9e 8a 08 00 05 23 01 03 80 46 27 78 ea 82 c5 ae 51 42 ab 24 0c 50 54 21 08 00 d1 c0 61 40 01 01 01 01 01 01 01 01 01 01 01 01 4d d0 00 a0 f0 70 3e 80 30 20 35 00 bc 86 21 00 00 1a 00 00 00 fd 00 32 3c 1e 87 3c 00 0a 20 20 20 20 20 20 00 00 00 fc 00 4c 47 20 55 4c 54 52 41 46 49 4e 45 0a 00 00 00 ff 00 35 30 35 4e 54 53 55 47 46 37 37 34 0a 01 b1 02 03 4b 71 23 09 07 07 83 01 00 00 4d 01 03 04 10 12 1f 20 22 61 60 5f 5e 5d 6d 03 0c 00 20 00 b8 3c 20 00 60 01 02 03 67 d8 5d c4 01 78 80 03 e3 0f 00 03 e2 00 6a e3 05 c0 00 e6 06 05 01 60 60 50 68 1a 00 00 01 01 28 3c 00 56 5e 00 a0 a0 a0 29 50 30 20 35 00 bc 86 21 00 00 1a 02 3a 80 18 71 38 2d 40 58 2c 45 00 bc 86 21 00 00 1a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 4a

Thanks!

Reply 49 of 71, by SupraGSX

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Andalu I think I see the problem I'll push a new build either later today or tomorrow with the fix.

RedCharles I bought a 1050 ti on eBay a few days ago just waiting on it to arrive. So no need but thanks.

Reply 51 of 71, by Andalu

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SupraGSX wrote on 2026-10-08, 16:18:

https://github.com/SupraGSX/Forceware-382.69/ … 2.69-2026-10-08

Please try this version and let me know if your HDMI problem is fixed

Tested with an HDMI-to-HDMI connection: it workssss!!! Thanks a lot.
https://ibb.co/pj2WKL1Q

It also worked with an HDMI (GTX960) to DP (monitor) connection.

Just a little note: in the NVIDIA Control Panel, the connection is listed as “HDMI - HDTV” and not as “HDMI - PC Display.”

One more thing: I tested the Forceware.382.69.10-8-2026 driver also on the GT730 (GK208), and it only allows the max resolution of 1920 x 1080.
I'm reporting this since the GT730 is listed in the nv4_dispi.inf file.

Thanks again for your hard work.

Reply 52 of 71, by SupraGSX

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Andalu wrote on 2026-10-08, 18:33:
Tested with an HDMI-to-HDMI connection: it workssss!!! Thanks a lot. https://ibb.co/pj2WKL1Q […]
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SupraGSX wrote on 2026-10-08, 16:18:

https://github.com/SupraGSX/Forceware-382.69/ … 2.69-2026-10-08

Please try this version and let me know if your HDMI problem is fixed

Tested with an HDMI-to-HDMI connection: it workssss!!! Thanks a lot.
https://ibb.co/pj2WKL1Q

It also worked with an HDMI (GTX960) to DP (monitor) connection.

Just a little note: in the NVIDIA Control Panel, the connection is listed as “HDMI - HDTV” and not as “HDMI - PC Display.”

One more thing: I tested the Forceware.382.69.10-8-2026 driver also on the GT730 (GK208), and it only allows the max resolution of 1920 x 1080.
I'm reporting this since the GT730 is listed in the nv4_dispi.inf file.

Thanks again for your hard work.

No problem! I'm glad it's working. Its recognized as an HDTV because it has a CTA block in EDID. That's correct handling even though it looks odd it's the way Nvidia did it. You should still be able to scale the display properly with the new control panel options. Previously Nvidia locked that away from HDTV monitors but this version unlocks it.

GT730 is HDMI 1.3a. 1.3a has a max pixel clock of 225mhz. So 1920x1080 at about 90hz is max that card can do under HDMI.

Reply 53 of 71, by Andalu

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SupraGSX wrote on 2026-10-08, 18:50:

GT730 is HDMI 1.3a. 1.3a has a max pixel clock of 225mhz. So 1920x1080 at about 90hz is max that card can do under HDMI.

My GT730 model is the following:
https://www.asus.com/motherboards-components/ … 5-brk/techspec/

A similar model on Techpowerup:
https://www.techpowerup.com/gpu-specs/asus-gt … file-2-gb.b5446

It most likely won't reach a resolution of 3840 x 2160, but a resolution of 3440 x 1440 is definitely possible:
https://ibb.co/1YnFWLjn

Reply 54 of 71, by SupraGSX

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If you could send a similar screenshot to the last one you attached. Just with my driver loaded I'll see if I see a reason for it. Also what clock mod are you using the yas 340mhz one?

Reply 55 of 71, by Andalu

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SupraGSX wrote on 2026-10-08, 22:23:

If you could send a similar screenshot to the last one you attached. Just with my driver loaded I'll see if I see a reason for it. Also what clock mod are you using the yas 340mhz one?

I just tried the Forceware.382.69.10-9-2026 driver on my GT730 connected via HDMI to a 32" monitor. Here's the screenshot:
https://ibb.co/PZxTznGD

The H510M system shown in the image is usually connected to a 34” widescreen monitor with a resolution of 3440 x 1440. I'm using the patch to reach the 600MHz pixel clock limit (thanks to the instructions in Yas’s guide). However, the same 3440 x 1440 resolution can also be achieved with the 340MHz mod.

Still error code 10 for my Quadro P620 with your last Forceware release.

Reply 56 of 71, by SupraGSX

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Andalu wrote on 2026-10-09, 17:16:
I just tried the Forceware.382.69.10-9-2026 driver on my GT730 connected via HDMI to a 32" monitor. Here's the screenshot: https […]
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SupraGSX wrote on 2026-10-08, 22:23:

If you could send a similar screenshot to the last one you attached. Just with my driver loaded I'll see if I see a reason for it. Also what clock mod are you using the yas 340mhz one?

I just tried the Forceware.382.69.10-9-2026 driver on my GT730 connected via HDMI to a 32" monitor. Here's the screenshot:
https://ibb.co/PZxTznGD

The H510M system shown in the image is usually connected to a 34” widescreen monitor with a resolution of 3440 x 1440. I'm using the patch to reach the 600MHz pixel clock limit (thanks to the instructions in Yas’s guide). However, the same 3440 x 1440 resolution can also be achieved with the 340MHz mod.

Still error code 10 for my Quadro P620 with your last Forceware release.

https://github.com/SupraGSX/Forceware-382.69/ … 0-09-high-clock

This is an experimental build with high pixel clocks. Nvidia recommended limits of 225mhz on fermi and 297mhz on kepler and Maxwell 1. But since your screenshot demonstrated 340mhz, that's the cap on this one. Should fix you gt730 issue and hopefully fixes your p620 issue as well. This version updates firmware to match what the p620 launch driver had.

Please let me know if both are fixed.

Thanks

Reply 57 of 71, by RedCharles

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So if I got a P2200, could I get 4k 120hz working on Windows XP with this driver?

Reply 58 of 71, by SupraGSX

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No one's tested that card that I know of to confirm. Other gp106 cards are confirmed working. I'd use the experimental build above because that's a very late gp106 card so you would also need the updated firmware that I'm hoping fixes the p620 above.

Reply 59 of 71, by RedCharles

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Forceware.382.69.10-6-2026
750Ti - DP - XG27UQDMS (Asus 4k Oled)

4k 60hz works with DP
2560x1440 works @ 120hz
1920x1080 works @ 240hz
1024x768 works @ 240hz

2560x1440 froze up @ 165hz.
2560x1440 went black @ 144hz. Windows XP said it worked, but I didn't see it.

Thank you SupraGSX. You have made my dream come true. Thank you.

Edit: The 750 Ti struggles with Doom 3 at 4k 🤣. Just the way I remember playing it the first time on a Geforce 3 Ti200. Fear is at min 11, avg 22, and max 60 in the benchmark. 4k is rough on the 750ti.

Last edited by RedCharles on 2026-10-10, 01:33. Edited 1 time in total.