LOL and good luck finding the (even half) finished Linux OSS drivers for that HD7750 - HD7970 series AKA "Southern Islands" as of today, after a whole Year of waiting...
http://www.x.org/wiki/RadeonFeature
lots of WIP and TODO's and few worthwhile DONE's in there, and lets forget that AMD's Linux "compute" code is lets say to be kind "rather lacking" even now

so now that AMD moved over to Linux ARM servers big time they should probably get their long standing most experienced Linux Kernel Development Lab Research Center in Germany team on that right away as theres clearly lots of work needed
http://www.xbitlabs.com/i...012-11/amd_osrc_staff.jpg ....Ohh wait, non sequitur does not compute.
Not to mention where the hell your idea that a power sucking "Southern Islands" gfx chip would ever be used in any mobile low power platform any time soon if ever... came from, even at ANY under clocked rate and so massively reducing its throughput Perf/W ratio far below any current ARM gfx clustered vendors offering.
and remember AMD's got to run over PCI-E v1 by default, or PCI-E v2 (there is No AMD PCI-E v3 code option in there) if you remember to manually set the custom beta option on linux boot today, ARM gfx go directly over cortex "AMBA3 or 4" Open Specifications mostly today and theres lots of interesting new optimized code additions there that are only now turning up in the x86 code base, simply put the whole ARM collective are added value to the core Linux and driving innovative change on all front's today so no worry's there.
even an Omega Homo rhodesiensis would know thats crazy never mind an alpha Neanderthal caveman.
LOL someone didn't like/understand that :grin:, so make a comment and put your opposing case, they call it a message board for a reason.. so you can talk and discuss opposing facts as you see it, then change your mind when you see the light, or close your mind when you are of the Luddite mind set opposed to change, as your happy as you are (with AMD/PowerVR) as the case may be.
but ill give you the fact its got the number "6" and the word's "High-Performance" and "Cluster" in there so it must be better right as PR say so, saving you the trouble of learning something new and actually confirming it's validity for your self, PR's job done, next in the Que...