Yes. 1080 Ti do not scale linearly, but in most of the benchmarks I’ve seen, two 1080 Ti are at least 1.75x faster than one when doing multi-GPU training. 1.75

Yes. 1080 Ti do not scale linearly, but in most of the benchmarks I’ve seen, two 1080 Ti are at least 1.75x faster than one when doing multi-GPU training. 1.75 / 1.36 (speed up of 2080 Ti over a single 1080 Ti) = 1.28. So expect 2x 1080 Ti to be about 30% faster. You can see how multi-GPU training works with Titan V benchmarks in the link below. 1080 Ti have similar scaling profile. https://deeptalk.lambdalabs.com/t/benchmarking-the-titan-v-volta-gpu-with-tensorflow/108 https://deeptalk.lambdalabs.com/t/benchmarking-the-titan-v-v...