I presume that the overall power usage would be 30-40 watts x 3, which is 90-120 watts.
Would that really be too much for the motherboard to handle?
Thanks
If that's the case, than no, it wouldn't be to much for the motherboard to handle and you can safely skip powered risers. I was thinking you'd wanna buy a lot more cards thus said with quite certainty that you'd need powered risers.