I'm guessing what you're saying is: If the only difference between the W9000 and 7970 is drivers, then someone would've soft-modded the 7970 to run at W9000 speeds.
The fact that the above has not happened yet doesn't prove anything. The W9000 runs identically--and I mean +/- one FPS--to the 7970 in gaming. Clearly the W9000 performs multiples better in professional tasks, but if there were substantive differences in the hardware itself, wouldn't the gaming benchmarks differ? ATI was thoroughly embarrassed when their previous models were soft-modded and performed at the same level as their pro cards. What's more likely: They changed the way they make the cards or that they just got smarter at preventing soft-modding?
As we saw with Glide, CUDA, and [soon] Mantle, software designed to take advantage of different aspects of the hardware can make things run multiples better. Even apps ported from CUDA to OpenGL have ridiculously better performance in Nvidia Vs AMD. This is all software.
I am highly skeptical of the real differences between the hardware, nothing I've seen posted here and elsewhere does anything to change my mind. This could easily all be smoke and mirrors done with drivers and by the way: They've done it before.
CUDA 6 released. OpenCL falls even farther behind. Not that it matters much here. NO CUDA FOR YOU!
http://www.anandtech.com/show/7515/nvidia-announces-cuda-6-unified-memory-for-cuda
Based on that article, CUDA 6 seemed to be mostly for developer convenience rather than performance improving.
True but developer convenience is not unimportant.
[G5]Hydra;18358608 said:Just out of curiosity what about a GPU determines how the OS decides what it is under OSX? The device ID, chipset specifically ?
Also the D300 is an R9 270X and the D700 is an R280X (7970)? What is the D500? An R280 with 512 Stream Processors disabled? It has the 384-bit memory bus etc.
CUDA 6 released. OpenCL falls even farther behind. Not that it matters much here. NO CUDA FOR YOU!
http://www.anandtech.com/show/7515/nvidia-announces-cuda-6-unified-memory-for-cuda
Aren't the new R9 parts just 7xxx series GPUs binned for higher clocks?
The nMP is likely based on R9 silicon,
but based on rated TFlop performance, the nMP GPUs are definitely running at lower core clocks
Technically, no. A subset, but there are new variants that have the Audio DSP in them. Additionally, the Hawaii parts are new graphics cofinguration. For the rest, the graphics pipeline doesn't have major or minor changes but most of the "X" models aren't the same. Likewise the "X" models with the audio subset clipped off technically are different from old models that didn't have it at all.
Parts of the layout are likely tweaked slightly also to help with speed bumps, but it is not a redesign or major upgrade. (again the Hawaii gets an improved PowerTune management but the others, from reports, are still the same. )
I believe you're incorrect the R9 270/280 cores are just binned or slight mods to previous Pitcairn/Tahiti chips. Only the 290x is Hawaii (which includes the audio features) and it's definitely not the basis for any of the nMP parts so I didn't include it in the table.