AMD Radeon Software support for 32-bit Windows

[halohalo]

Because Radeon Software 18.10.1 does not support 32-bit Windows, 4gamer.net (a Japanese video game website) asked AMD, and AMD confirmed that Radeon Software support for x32-bit Windows operating systems has been moved to a legacy support mode.

https://www.amd.com/en/support/kb/faq/pa-120

https://www.4gamer.net/games/022/G002212/20181018086/

 

The final Radeon Software for 32-bit Windows is 18.9.3. And Nvidia released R390 U8 at September 2018.

[halohalo]

Nvidia released R390 U9. I edited nv_dispwi.inf and it works with GeForce GTX 960.

[halohalo]

AMD offers 32-bit version of Radeon Pro Software for Enterprise 18.Q4.1 which supports WDDM 2.4.

[halohalo]

NVIDIA released R390 U10 for 64-bit version of Windows. The release notes didn't mention support for 32-bit Windows, so I think this is the end. 

[UCyborg]

I wonder how much effort it actually takes to provide 32-bit builds. Is it just the compilation part or are there also significant chunks of processor specific code?

Graphics cards with 2 GB of video RAM were already common in low-mid price range 5 years ago. So that takes the half of the 32-bit addressable space, so one can use 2 GB RAM max. 4 GB card would take that number down to zero. 

Then there's PAE, which, AFAIK, on today's Windows can only be utilized by unofficial patches to the kernel (assuming drivers in use on the particular system aren't buggy).

[halohalo]

It is necessary to fix security vulnerabilities in nvlddmkm.sys, and make sure the driver works on Windows 7, 8.1, 10 (1507~1709).

 

Besides, the release notes mention that NVIDIA display driver constrains Total Available Graphics memory to just below 4 GB for GeForce GPUs with 2.75 GB or less of video memory.

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