Am 08.11.2013 22:32, schrieb Magnus Berg: > I read in another thread that AMD:s card was much much better on Opencl > than the NVIDIA ones. But that the drivers wasn't stable. And the user > who tell the story that AMD outperformed NVIDIA didn't recommend the AMD > card because of that. But if you can tell that the driver int the Linux > kernel is stable and good I'm more than happy to chose a AMD card. > > The question about graphic memory was based on my total lack of > knowledge in the graphic field. If the pictures and their different > changes made in Dark Table is saved in the GPU memory it must be a good > thing to have lots of memory there, in the same way as it is good with > enough ram. But if the GPU doesn't save pictures and their changes in > memory there can be no use with lots of memory. And it's better to chose > a faster GPU. That's my theory based on no knowledge at all. :-) > The question is what do you want to achieve. I personally want to have a high responsiveness of darktable when it comes to interactive work - I don't care much about the speed of exports as I do them in batch and drink a cup of coffee in the meantime. Fast interactive work means processing of images in the range of only one or two megapixels. So GPU memory does not play a role as long as some minimum requirement is met (guess this is around 1GB or so). That said: as long as your performance expectation is similar to mine you should rather go for a faster GPU than more graphic card memory.
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