I just ordered 64gb 2666mhz ram to upgrade the 16gb 2133mhz i have currently and i wonder how much of a impact those 64gb will have in the render time with my setup :
Cpu - i5-7600
Board - Gygabite b250m-ds3h
Graphic card - zotac1060 6gb
OS-W10
You really ask this when you alrerady ordered it ??
If you rendered on the CPU and the scene and the result fitted into the RAM: nothing.
If it wasn’t fitting then there will be no more swapping. So if you had a HDD the it will get faster; if a SDD also faster but the difference might be not this big than with HDD.
If you rendered on GPU and the scene fitted into the RAM: nothing.
If you do noe use bigger scenes and the data sent to the GPU doesn’t fit into the VRAM. It does not even work.
According higher MHz ?? Depends on the amount of data which as to be transported… but do not expect some speed up factor of 2666/2133=1.25…
Anyway:
Just make some benchmark now… and after you get them…
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My question was just to understand better how much improvement i would have because from what i researched and someone experienced on the 3D area told me , having more ram would help . I just wanted to have a better understanding of the improvement that those extra 48gb would give
And i tried to answer some… but just wondered about your order of sequence… since you already followed…
But on what context…
It has around rendering , that having more ram would help with render
It already has been answered, but yes, when rendering on the CPU it could be faster when previously the scene didn’t fit in memory.
For GPU rendering it does nothing .
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Upgrading from RAM 16gb to 64gb gives you extra memory for your work.
I don’t think the direct speedup for rendering is significant. 
Rendering using GPUs is not directly related to RAM capacity.
However, some image information uses shared GPU memory and this uses RAM.
For direct speedup and stable processing, the GPU’s VRAM is required, but this does not scale.
This is only possible if the GPU is replaced.
I only use the gpu for rendering in cycles since cpu is very slow , so it means that wont make much difference at all
So on my case if i wanted to have faster render times i would have to upgrade my gpu only ?
Upgrading your GPU to a 3000 or 4000 series would cut render times for sure.
But also, RAM matters. Don’t buy a card with less than 16 Gb of VRAM.
Fast rendering requires GPU upgrades and a model with sufficient VRAM.
In addition, scenes beyond the GPU’s VRAM cannot be handled by the GPU.
And as the GPU’s performance increases, CPU, RAM, etc. are needed to match the GPU’s speed.
You may need more than just GPU upgrades.
※ If you are using it while maintaining your current system, you will need to select the right GPU, and it may not be much different from the model you are using.
RAM upgrades are not a bad choice.
16gb is a capacity that may be insufficient. 
If you currently render using the GPU and especially that 1060 6GB card, then the upgrade of your system RAM will pretty much have zero impact at all.
If CPU rendering, then the only impact it would have is if you were running out of system RAM while rendering or doing anything else.
Given how old the 1060 now is, any new/later GPU would have a big impact. If Eevee maybe not as great, but still fairly significant depending on a few of things.
For Cycles, a recent RTX 4060 or 4070, would be over 10 times faster.
TLDR: nothing.
Which graphic for cheap and updated would be a nice combo with this cpu i got and handle the power from my PSU which is a 450w XFX TS 80% bronze ?
This depends what you mean by cheap and how much faster you want to be…
If you have look at (for example):
a GTX 1060 is at 10.000 points
a RTX 4060 is at 20.000 points and about ~300 $ or EUR
But you have to compare the other features too… (power, VRAM) the 16GB version is about 450$
450W will not be enough power to run your PC with a modern graphics card.
You need to read up on computer parts and 3d in general.
All this random questioning is pointless as all answers have been given already and lknks provided.
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Yepp…
at some point an upgrade is simply useless if someone does not already have 
or get some (working !) parts very very ( very very very 
) cheap…
I mean i get what you all are saying and thank you for clarifying my questions , i dont mind upgrading the PC little by little . I just dont wanna invest alot on it , when its possible to make good blender projects with average machines 
I also have a lot of fun with my computer which only does have 8GB and no extra graphics card… because this less power consuming machine is my almost-all-day-on-working-horse and so i do a lot with this machine because simply mostly when i got some inspiration or maye give some hint/suggestions/solution here on BA i’m already sitting in front of this machine.
But sometimes i use my slightly more powefull machine which does in fact use almost use three times the power when “just doing things” and even more when “working-very-hard”…
Of course if i would do a big upgrade then i also (w/c)ould have more fun…
But be carefull when doing this… You should plan ahead and check for all compatibility issues that may arise.
I have a few stories in this subject, and I’ve learned it the hard (and expensive) way.
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