Zen will have 2x128bit vector units. That should result in roughly half the FLOPS for the same core count. http://www.anandtech.com/show/10591/amd-zen-microarc

Zen will have 2x128bit vector units. That should result in roughly half the FLOPS for the same core count. http://www.anandtech.com/show/10591/amd-zen-microarchiture-part-2-extracting-instructionlevel-parallelism/2 http://www.anandtech.com/show/10591/amd-zen-microarchiture-p... (slide 2 on this page)