One question guys, someone knows if it should be ok to get one more GPU of type Nvidia Geforce GTX 1070 (gaming version), given that now I have GTX 1070 Titanium? They don't have another Titanium card available here, so I have to get a different one, but closely similar, and I wonder if for using Keras (with TensorFlow backend), will it work fine? They are not exactly the same cards, but similar enough maybe. I want 2 GPUs for Keras.
I tried training with a 1080 and a 2080 ti and I found that I didn't get any speed up from multi-gpu training because the 1080 acted as a bottleneck. So I while I think this would work fine, you would be better served to run a different model on each GPU rather than trying to train across GPUs.