I've read up on Barefeats and MacPerformanceGuide as well as a few other sites but the one combo I can't seem to find data on is upgrading the base nMP 4C to a 6C but keeping the D300s. Does anyone have data on whether the D500's are worth it for Photoshop/Lightroom? The reason I ask is if you take BF data the CTO iMac is faster than the 4c nMP at most PS and LR tasks but the 6c/D500 beats it outright. Question remains if it the CPU or the better GPU's that push it past the 4c nMP/iMac in benchmarks? Any guidance would be appreciated.