Various optimizations in 256³ boxes including nongravitational source terms, shown at selected times (code units) chosen to highlight the dominant stages of the dynamics. Top row (turbulence + cooling): midplane slice of the instantaneous, normalized radiative cooling rate in a run initialized with turbulent ICs and evolved with driven turbulence plus heating/cooling; cooling is initially diffuse but rapidly localizes into a filamentary network coincident with compressive structures. Middle and bottom rows (forced turbulence): volume rendering and projection of density from the driven-turbulence run, illustrating the growth of a high-contrast density web maintained by the interplay of stochastic forcing and thermal instability. Three-dimensional volume renderings and animations are available at doi:10.5281/zenodo.22731680 and https://github.com/bhorowitz/DiffHydro_public/.