For me need reliable board too. I overclock but always I keep at least 200-300MHz under last stable clock.
I7-5820K i plan to keep on 4.0GHz... i7-3770K i keep overclocked on 4.5GHz but only because he is stable and on 4.8GHz.
When I mean stable that's 12h of Prime95 with AVX instructions and 90% of memory, not like people today work with Haswell AIDA64.
I could run on 5.0GHz AIDA64 I think...
But I suppose I spend my luck for CPU because I had some crazy sample i7-3770K he pass LinX AVX on 4.5GHz with 1170V.
At least 5 want to buy him. He 3 years work on 4.5GHz 1.2V 24/7.
But I hope I will pull something and from i7-5820K. Batch J Malay, memory is QVL with R5E and other ASUS boards.
I really don't know what to do, X99M-WS, Rampage 5 Extreme. If I buy R5E I can say goodbye to USB 3.1 standard.
Because someone who design boards as R5E didn't thought what will happen if someone with CPU 28 lanes install only single graphic card,
Sound card in PCI-Ex1 slot and USB 3.1 Port card.
Graphic card will work same as you install one more graphic in second slot on x8 and maybe something else will not work, Sound card example.
I'm not sure is it possible to USB 3.1 use lanes from PCH in black slot together with sound card in PCI-E x1 and single graphic card in
first slot to work on x16 3.0.
X99-M WS have nice internal USB 3.1 and one little PCI-E x1 for Sound Blaster Z.
But still no date of that board. I like WS board, because I'm not fan of fast changing CPU and board. They only need to provide everything necessary for graphic cards and I'm sick of new chipsets, sockets and CPU with thermal paste and 5% improvements every 10 months and this year people have chance to build 6 core CPU for little cheaper than usually. Who knows what will happen for 2 years maybe Intel decide to ask 500-550$ for 6 cores.