how much kilowatt does my set up needs to run this mining rig?
it depends on the brand/GPU type, AMD / NVIDIA has a difference on
power consumption.yes maybe
Max 1.6KW will be needed
Unless you want to run inefficient mining rigs, 1.6 kW is a WRONG maximum amount.
If you really want to step out of the amateur "hobby" mining niche you need efficient mining rigs which need to run with a minimum of 13 GPUs per rig. The better the GPU on those rigs the higher the power consumption. For maximum efficiency you would need high powered GPUs that give the best hashrate to power consumption ratios (1080ti will do). To run those, a 1.6kw power consumption surely won't cut it.
Creating so big rig (with so many cards) has some drawback. When your MB hangs or just something goes wrong 13GPUs are not working for you. Second thing - such "sophisticated" motherboards are very expensive. You need to calculate everything...
Our experience shows 6-8 card rigs are the optimal ones.
And choosing nvidia is also questionable. I can agree - nvidia are much stable and little more powerful however much more expensive! Typical RIG (6 cards) should consume from 600W - 1000W - depends on used GPUs

easyMINE