I can´t deny it takes a lot of experience and knowledge to create such a tool.
But sorry I don´t think Unwinder is working for nvidia or ATI lol, sorry no !!!
Go visit guru3d forums, you can talk to the Creator of Rivatuner directly there in the forums.
It seems that Guru of 3D is having some technical difficulties atm, this is list of links that work:

http://www.softpedia.com/get/Tweak/Video-Tweak/RivaTuner.shtml
http://www.majorgeeks.com/download737.html
http://www.versiontracker.com/dyn/moreinfo/win/41277

How comes this tool can detect unknown features...
...and even features of products that don't yet exist on the market ?
Either it's not written by guru3d.com staff and/or guru3d.com is owned by AMD/ATI and/or Nvidia. 
It's not that you can "discover", "find out", "guess" GPUs/chipset and hardware features. Whoever really is behind Rivatuner and writes the code must be someone among AMD/ATI and Nvidia developers and drivers coders in the first place. The is no guess trick and reverse engineering is not an option, guessing is not an option. You can't just find things out by chance, you need some proper detailed documentation directly from the manufacturer in order to write any tweaking application. 
It's amazing that Companies like Nvidia and ATI can get away with this an no one seems to notice nowadays, I mean.. recently there was a lot of fuss about some websites that was found out to be controlled and owned by some Sony employees and wanted to look amateurish, yet no one notices that tweaking applications like Rivatuner (and others.. like the various modified/modded Nvidia and ATI drivers available online...) can't be assembled by an amateur programmer and not even a pro if he/she doesn't have the proper official documentation directly from the manufacturer, at the very least. 
It's pretty clear that by releasing a tweaking application that is able to tweak not yet released hardware and has the ability to tweak unknown to the public hardware features, then it must be written or at the very least deeply co-written by employees of AMD/ATI and Nvidia directly. 
Without proper documentation you can be even the smartest designer or coder on planet Earth but you wan't be able to achieve anything serious.
"This is vthe alue card with..."

How did your 'v' jump 4 places back ? Reminds me of a bash quote.
Getting tired of constant paper rubbish.

DAAMIT we wanna see the card in action and some becnhies!
I can´t deny it takes a lot of experience and knowledge to create such a tool.
But sorry I don´t think Unwinder is working for nvidia or ATI lol, sorry no !!!
Go visit guru3d forums, you can talk to the Creator of Rivatuner directly there in the forums.
It seems that Guru of 3D is having some technical difficulties atm, this is list of links that work:

http://www.softpedia.com/get/Tweak/Video-Tweak/RivaTuner.shtml
http://www.majorgeeks.com/download737.html
http://www.versiontracker.com/dyn/moreinfo/win/41277

...and even features of products that don't yet exist on the market ?
Either it's not written by guru3d.com staff and/or guru3d.com is owned by AMD/ATI and/or Nvidia. 
It's not that you can "discover", "find out", "guess" GPUs/chipset and hardware features. Whoever really is behind Rivatuner and writes the code must be someone among AMD/ATI and Nvidia developers and drivers coders in the first place. The is no guess trick and reverse engineering is not an option, guessing is not an option. You can't just find things out by chance, you need some proper detailed documentation directly from the manufacturer in order to write any tweaking application. 
It's amazing that Companies like Nvidia and ATI can get away with this an no one seems to notice nowadays, I mean.. recently there was a lot of fuss about some websites that was found out to be controlled and owned by some Sony employees and wanted to look amateurish, yet no one notices that tweaking applications like Rivatuner (and others.. like the various modified/modded Nvidia and ATI drivers available online...) can't be assembled by an amateur programmer and not even a pro if he/she doesn't have the proper official documentation directly from the manufacturer, at the very least. 
It's pretty clear that by releasing a tweaking application that is able to tweak not yet released hardware and has the ability to tweak unknown to the public hardware features, then it must be written or at the very least deeply co-written by employees of AMD/ATI and Nvidia directly. 
Without proper documentation you can be even the smartest designer or coder on planet Earth but you wan't be able to achieve anything serious.
This sounds like an OEM win to me. You have to ask yourself, "where is the money, from the average consumer or from OEM?"