Maciej Zwierzycki <maciej.zwierzy...@gmail.com> writes: > Welcome Everyone! > > First post/email here. > > I'm considering upgrading my old PC (Phenom 945, with 4GB of RAM) mostly > for the sake of impriving DT's performance. I'm budget limited so it's > going to be a second hand hardware.
See this thread for some feedback about new PC performance: http://thread.gmane.org/gmane.comp.graphics.darktable.user/6320/focus=6349 > One thing to decide is the CPU. See above, the real one thing to decide is the GPU from my experience. > I'm considering either overlclocked i5 (2500k/3570k) or i7 3770 (no > "k"). AS I understand the single-threaded perfromance is about on par > or possibly slightly better for i5 (when overclocked). i7 however has > an edge in multithreaded applications. http://cpuboss.com/cpus/Intel-Core-i7-3770-vs-Intel-Core-i5-3570K Well, both are quad-core processors, and dt can exploit this very well. The i7 is hyperthreaded, i.e. each core can execute two threads, but running two threads will not be twice as fast as executing just one (you may expect around 30% performance improvement at best, but it really depends on the application, I'm not sure what darktable would gain from hyperthreading). So, an educated guess would be "you may gain a little buying an i7, but probably not worth the price". If you're going to overclock, then the benefit of overclocking may indeed be superior (at the risk of damaging your hardware though). > PS. I also have a GeForce GT 520 1GB graphics card with OpenCL support. In general, Nvidia GPU are said to be slower than AMD for OpenCL. In this particular case, comparing my card to this one: http://gpuboss.com/gpus/Radeon-R9-270-vs-GeForce-GT-520-PCIe-x1 floating-point performance 2,304 GFLOPS vs 155.5 GFLOPS My card is a pleasure to use with dt, but it's more than 10 times faster than yours. So I'm not sure this would be enough. I had a previous experience with a cheap nvidia card, and it was actually slower than my CPU. If your current PC can accept more RAM, then you may consider upgrading to 8 GB RAM and a decent graphics card. You'd get decent performance for less than 300 dollars. Changing your CPU won't change much OTOH. -- Matthieu Moy http://www-verimag.imag.fr/~moy/ ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list Darktable-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-users
