I received my 6700k, for the moment 4.7 at 1.38v. To get 4.8 I would have to go above 1.4 which is too much for my cooling to keep it quiet and reasonable temps (110iGT+2x noctua).
Gigabyte motherboard is not that great for the moment (I hope it's gonna improve with the new bios:/ ). I can run my memory with xmp 3200 CL16, but any changes crash the bios (I have to load optimized settings). I can't change timings or frequency (even with upped mem voltages.
Overclocking processor is also kinda weird. Setting 1.4v in bios gives you under load in windows...1.3V and instant crash lol (I read one review which mentioned the same thing). Changing LLC to high gives v drop only by 0.01V. None of the windows apps can read gigabite voltages, only their app can do it. CPUZ shows something like 1.85v with 1.38 in bios.
Increasing bus speed crashes the system no matter what, dynamic voltage...crashes the system. I think you can run this board only with everything on default
Fan control is still crap for gigabyte. You can setup profile in the windows app but ...you can't save it;] so every time you startup PC they run at like 80-90%. I control Noctua fans with corsair link which is ok but case fans are nightmare. Even if you want to set up fixed rpms, above 70C they will run at 100% because this is how app works. Sometimes fans just speed up out of nothing and then slow down to setup speed. Don't recommend
Even LED lights around sound card when setup to white look more like yellow so don't match the look
had to switch them off.
I would probably go for Hero VIII now when I know it's that bad. Maybe in the future it'll get better.