> Could you show a link to MIPS desktops? It's new to me.

http://en.wikipedia.org/wiki/Loongson#Loongson-based_systems
http://en.wikipedia.org/wiki/Lemote#Desktop_computers
http://en.wikipedia.org/wiki/Lemote#Fuloong_2_series_of_small_desktop_computers

> Does MIPS nowdays have SIMD?

http://en.wikipedia.org/wiki/MDMX
http://imgtec.com/mips/architectures/simd/
http://www.linleygroup.com/newsletters/newsletter_detail.php?num=4918
http://www.google.com/search?q=loongsimd
http://en.wikipedia.org/wiki/Media_Extension_Unit

> How about SPARC?

http://en.wikipedia.org/wiki/Visual_Instruction_Set
http://www.google.com/search?q=simd+%22hpc-ace%22

> What's the state of RadeonHD or Nvidia support on those?

I guess that's more a question of operating system support than of CPU ISA.


Edit: added LoongSIMD
Edit2: added MXU

[ Edited by Andreas_Wolf 12.01.2016 - 11:43 ]