For those who don't know people have been modding FSR into almost any game that has a render scale option however certain anti cheats don't like to run extra dll's in the game folders. There are also certain engines that don't work properly.
You can either do it yourself or you can download the installer tool people made which was created by NIMEZ here is a link to up to date thread. You can install it on Terrascale GPU's even.
https://forums.guru3d.com/threads/mod-nimez-radeon-software-21-6-2-incl-gcn-legacy-pack-whql.436611/
Actually now that I think about it I did install windows 11 then reverted back to 10 and I assume DDU just didn't fix something that messed up when downgrading.
I actually just reinstalled AMD 21.6.1 then installed 21.6.2 over it again and now it seems to detect clocks & core count properly weirdly enough.
In the past i tried DDU and then 21.6.2 and it didn't work. I don't know if this is an issue isolated to me.
I don't have that option under advanced.
I am on Windows 10 dev build 21390 however it detected my old 380 fine.
https://i.gyazo.com/a058af5147ae3f36c444216dd6739636.mp4
Both 2.40 and 2.40.2 show same result.
edit: update fixed after reinstalling older driver than installing new. DDU seemed to miss some tags. Issue probably arose when I reverted back to W10 from w11.
Actually it would run fine on a 750w PSU. the card would use roughly 500W and possibly even less if it uses HBM.
The 6900xt is 300w and chiplets for GPU are really efficient because u don't have to have the ram twice the power and the die's can actually be a bit smalelr each using less pwwoer...
Its less Flops than my R9 380 which has about 3,584 GFlops but if it has the rumored HBM it will have faster memory bandwidth and its also based on Vega Arch so its probabably a bit faster.