Riserless motherboards are good because they remove the worry of having the sata cable melt down, this is the most common item that usually melts for most miners. So it’s not a bad idea.
You still got the risk of the GPU themselves having some fault such as a shorted capacitor which goes up in smokes, however this is more rare and usually the PSU detects the short and shuts down.
Riserless motherboards add other problems, such as a mining farm requiring additional cooling or a closed case, and these are additional costs. I think it's cheaper to buy quality raisers and a quality power supply.You still got the risk of the GPU themselves having some fault such as a shorted capacitor which goes up in smokes, however this is more rare and usually the PSU detects the short and shuts down.
I was against them in the first place,but just 8 additional fans it is not that big of a power cost to cool it down.I bought it last Sunday and put it to work on Monday,the riserless motherboard,not a single problem so far.I completely have eliminated that saying "I got 99 problems and one bad riser is all of them" and I have also a few free slots in my old motherboard for which I have ordered a Rtx 2060 12 GB to try.
I agree it is more difficult to set up properly such motherboard at the beginning but once you do it is a set and forget thing then.I know for sure if I will build another rig this is the kind of motherboard I will use.
