2013-11-08 22:01, Togan Muftuoglu skrev: > Hi, >>>>>> "Ulrich" == Ulrich Pegelow <[email protected]> writes: > Ulrich> Hi, > Ulrich> let's hope there is a user who has tested the two variants and > can come > Ulrich> up with some first hand experience. Else it will be difficult to > get a > Ulrich> reco. > > Ulrich> As an alternative you could have a look at the many graphic card > Ulrich> benchmarking data available on the net. Of course benchmarking > Ulrich> always is a kind of black art. That said you should specifically > Ulrich> look for GPGPU benchmarking figures rather than the classical > Ulrich> gaming test suites. > > Ulrich> My little bit of experience comes from the phase when I needed to > Ulrich> decide between NVIDIA GTX 660 Ti versus AMD HD7950 (both come at > Ulrich> more or less the same price). I checked both devices physically > Ulrich> with darktable and found the NVIDIA to be a big disappointment > and > Ulrich> the HD7950 to really rock. This was fitting well to almost all > Ulrich> published GPGPU benchmarks: the 660Ti is optimized for gaming > Ulrich> whereas the HD7950 is a monster when it comes to computing. > > I don't have an experience with other cards but I have Asus > HD7950-DC2T-3GD5-V2 and using darktable has become really fun, as all the > previous time taking tasks are now done in a couple of eye blicks. Probably > the 16 GB ram helps also. > > Togan > Thanks for your answer.
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. :-) Then it comes to test I must know witch tests that is relevant for picture work in Dark Table. The only thing I know of Dark Tables hidden life, and hove it works, is that it uses the GPU and Opencl to do the work. Magnus Berg ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
