Yes, Hawaii GPU does not use all its resources
The information that we published yesterday claiming that the AMD Hawaii chip does not use all of its computational resources has been confirmed.
It turns out now that the AMD Radeon R9 290X GPU has 48 computational units that are equal to 3072 stream processors and 192 texture mapping units, but only 44 computational units are used in this GPU. The upcoming AMD Hawaii XTX GPU will have all units enabled for even more performance than the R9 290X.
It is now unclear how the graphics card based on Hawaii XTX will be called. It will likely bear the R9 290XT brand name but at the same time it may belong to a fictitious R10 line. The Hawaii XTX chip will likely be produced on 28 nm technology too.