Thanks lots for your help, as this lead me to understand few things which i wasn't paying attention to before.
You are absolutely right about the Gen5 M.2, I'm spending 5k-6k for a PC and of course nobody will want to buy a PC and in few months end up with a mobo which cant use next Gen SSDs, My last PC lasted for 7 years and until last year my i7 and GTX Pascal Edition with 1st Gen M.2 were doing well working with 3D programs. But now with Raytracing im left behind and its time to upgrade for a PC which need to last for at least 5-6 years.
Now when it come to having a M.2 Lane sharing bandwidth with the GPU is a
BIG NO for me
, we know actual games do not use all potential of the PCIe 5 x16 bandwidth because they are optimized and if you do buy PC just to play games i dont recommend any Creator Motherboard, a 2.5K pc should do the job. Because the difference of your GPU sharing bandwidth with M.2 and running on x8 instead of x16 its not huge, as per tests done
here its a maximin of 10% performance loss. For actual games its not an issue. (note: for future games in few years it will be an issue)
However when you're a creator and make 3D environments and assets for games you are never running on the optimal performance, as this is last step done when polishing. Usually your scene is always upside down and full of millions polys around you, while for example on optimized game you are running on a scene with 7 million polygons, the original scene can be 20 times bigger or just one high poly asset you're working one can be 100mil polys which is bigger than an optimized game scene. plus you are rendering every few minutes your while environment leading to CPU, GPU and M.2 bottleneck many times per day as each render a GBs of cache are written in cache folders. So its very different than a final game which come optimized with cache ready installed on your Blu-ray.
There will be also an increase in the future of the bandwidth used actually by the Gen5 M.2 and potential increase on the next GPUs either via updates or new GPUs version.
I spent all day yesterday researching all mobos Asus, MSI and Gigabyte with Gen5 M.2 ready and they all steal bandwidth from your GPU if you use an Gen5 M.2 including the expensive Maximus extreme. except one Motherboard which have dedicated 2nd PCIE for your M.2
Godlike
You may say but other Mobos have 2nd PCEI 5 and can be used for M.2 like the case of Z790 Apex. Yes its true but they all still share bandwidth with the 1st PCIE for your GPU even from the 2nd PCIE, that's why Godlike is the only exception
In Regards to the down side of this mobo mentioned in many forums and YouTube videos not supporting IGPU which make it useless for Creators due to media encoding , after looking closely at this its really not true. Nvidia support H.264/HEVC decoding, and H.264/HEVC encoding which are much better than the intel encoder.
I even checked Premier Pro users in few forums and find out people even disable the IGPU to force software use GPU instead as it goes much faster for them. like this comment from
Here:
I found that disabling Intel for video decode works out much better in my case (4090). Results are night and day, I can edit and playback without stutter which makes for smoother workflow and lower times. 13900K just wasn’t cutting it for me here
There is nothing an iGPU can do which GPU cannot, if someone is buying this board to use it without a GPU is like buying a Ferrari and to just walk around with the key.
Godlike is an expensive motherboard for sure i'm not a hardware expert to know exactly how much it cost them to build it. But i will say looking at all the features and expansion it provides as a Creator motherboard roughly £1000 max instead of 1.2K . If we drop all the fancy unnecessary gadgets they can make a similar motherboard for £800.
In the other hand Maximus Extreme its really not worth it.
Conclusion if you're a Creator Godlike is the only way to go as you have no other choices as of today since its the only one supporting next Gen5 SSD without sacrificing your GPU lane, otherwise if you pick up any other mobo you will need to upgrade in few months and will be waste of money.
I am laughing to myself after reading all your comments about those two parts... but anyways, I have my reasons for having building the system, but anyways...