On: Deep learning box for $1700

[joshu]

It's fine for a single GPU. For multiple GPUs in a deep learning box you want more.

[Toast_ → joshu]

What cpu would you recommend? Would it be better to go with a 2x cpu mobo?

[en4bz → Toast_]

Definitely not since only 1 socket is usually directly attached to the PCIe bus. The best CPU for the money at the moment is most likely an i7 5830K with 40 PCIe lanes. Or you could wait (probably the best idea) for AMD to release it's "threadripper" CPUs tomorrow with 44 lanes and for Intel to release it's new i7/i9 lineup in 2 weeks, also with 44 lanes.

[Toast_ → en4bz]

Cool, thanks for the info.