iMac 5K vs Mac Pro: Cinebench

iMac 5K 4.0 GHz, 32GB, 1TB SSD, AMD Radeon R9 M295X 4GB GDDR5 -versus-
2013 Mac Pro 3.3 GHz 8-core, 64GB, 1TB SSD, D700

The two machines tested here are the fastest possible models for this type of work (as of late 2014).

Cinebench R15 OpenGL

The 2013 Mac Pro with its dual D700 GPUs falls well short of the iMac.

Cinebench OpenGL (GPU performaence)
iMac 5K 4 GHz Radeon M295X vs 2013 Mac Pro 3.3 GHz 8-core D700

View Apple Mac Pro Upgrades at OWC

Cinebench R15 CPU

The 8 CPU cores of the 2013 Mac Pro are indeed much more capable than the faster but only 4 cores of the iMac 5K.

Cinebench CPU
iMac 5K 4 GHz Radeon M295X vs 2013 Mac Pro 3.3 GHz 8-core D700

View Apple Mac Pro Upgrades at OWC