When Multithreaded PhysX checkbox is enabled, FluidMark creates one thread for each fluid emitter for PhysX CPU and does not use PhysX multicore support. When Multithreaded PhysX checkbox is disabled and Built-in CPU multicore is checked, FluidMark creates only one thread for rendering and PhysX and uses PhysX built-in multicore CPU support: Multicore CPU is better managed (with and without the multithreaded PhysX checkbox). We clearly see the impact of an additional PhysX card. This score is with a GTX 580 alone (actually there is a second GTX 260 but it’s not used for PhysX) and this one is with a GTX 580 (3D) + GTX 260 (PhysX). The additional 3D workload allows to smooth results and above all, makes scores more coherent especially when there is a dedicated PhysX GPU.
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