Other characteristics of V100 that may be interesting to people buying GPUs for data centers:

- higher capacity GPU memory. 1080 has 8 GB, V100 has 16 or 32 GB.

- higher bandwidth GPU memory. V100 has HBM2 with a peak of 900 GB/s, 1080 has G5X with a peak of ~300 GB/s.

- ECC support.

- data center certification + warranty

(The geforce warranty covers normal consumer usage, like gaming, and does not cover datacenter use)

- availability of enterprise support contracts.

(If you are buying a ton of GPUs to put in a datacenter, you probably don't want to end up on the normal consumer support line when something goes wrong)

- fast fp64

There are probably others