Shot at iso 200, you shouldn't have too much noise. I'm not shure where it's coming from.
I did notice a haylo around the rocks from oversharpening or using too big of a radius sharpening. It could be coming from that.
There is no reason you can't have the best of both worlds.............sharp and noise free. Sharpening can increase noise. What happens is you sharpen the grains of noise and make them more noticable. If you sharpen with one of the smart sharpening techniques it will reduce the noise seen. ( high pass sharpening, or edge sharpening are a couple).
I also think the sky in the second one is a little over done. Looks too blue to me anyway.
I did a quick edit .......................i added some saturation to the sky only----some contrast to the snow and rocks---and sharpened with edge sharpening (The haylo is still there because you already sharpened it, but if you start over and use edge sharpening, it won't be there anymore.)
