I'm running iClone 6 on an Intel Q6600 2.40 GHz Quad Core with 8 GB Ram at the moment without any real difficulties.
What is more important at the moment for iClone 6 is the GPU - some users are having serious problems due to - a) no DX11 and b) not enough Video RAM. I installed an Nvidia GTX 980 a few weeks ago, and it really makes a difference when rendering. It will be moved into my new build just after Christmas, and then I hope that things will be OK for the next few years.:)
Gerry
System: Win 10 Pro (21H2), Asus X99-E WS, CPU i7-5930K -3,5 GHz, 32 GB DDR4 2666-16 RAM, NVidia GTX 1080 Ti GPU - 11 GB VRAM(Driver Studio-536.99), Samsung 850 Pro 512 GB SSD, 6 TB HD storage.