Setting aside the dual GPU issue, the Firepro GPUs in the current Mac Pro are just pathetically slow. The mobile GTX1060 will annihilate dual D700s in any reaso

Setting aside the dual GPU issue, the Firepro GPUs in the current Mac Pro are just pathetically slow. The mobile GTX1060 will annihilate dual D700s in any reasonable benchmark suite. They were underwhelming in 2013 and they're downright embarrassing in 2017. A four pound ultrabook should not have better GPU performance than a $7000 "professional workstation". The Mac Pro chassis has more than enough thermal performance to cope with a pair of modern GPUs, but Apple have been utterly complacent about upgrades.