What processor to buy for Fusion rendering?.

[fprico]

Hi, 

I am between two proecessors the 9900k and the 3900x. I know that the 3900x have 12 cores vs 8, but I don't know how it works in fusion 360 as I don't have any benchmark. Will the 3900x be a lot faster in Fusion rendering?. 

[Beyondforce]

Hi @fprico ,

The render engine takes everything it can get. The number cores don't matter much for F360 only for multi-tasking.

You need to focus mostly on Speed (GHz).

You can check out https://tesreg.com for F360 hardware benchmark. Let me know if you will help with the table.

I have the Core i7-8700K which is one of the best, but you also need to think about your budget as well!

Cheers / Ben

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[TrippyLighting]

For rendering the number of cores does matter because it's multi threaded.

For modeling, while some parts are better than others it mostly does not.

However, if render speed really is a concern, then I'd use cloud points or a faster and more full featured external render engine. Keyshot comes to mind here.

[Beyondforce]

Here is an example:

Intel i7 8700k - 6 Cores, 12 Threads @3.7GHz

ryzen 7 2700x - 8 Cores, 16 Threads @3.7GHz

CPU with more cores/more threads typically will have less GHz and that is due to the heating challenge!

In the benchmark (image below), you can see that more Threads won't give you a better performance in F360 case:

Maybe I'm wrong, but that's what I have found so far 😉

[TrippyLighting]

Is that also valid when comparing across the same manufacturer ?

Lets say for example from the same processor family just with increasing name of cores ?

Intels and AMD's CPU architectures are quite different.

[Beyondforce]

You are right, Intels and AMD's CPU architectures are quite different. Which is also why in this example I have compared between their mid/high-end CPUs.
I'm waiting to test the i9 which will help to answer your question - "Is that also valid when comparing across the same manufacturer?"

If you know someone with an i9, please ask them to contact me 🙂

@fprico - Think about how often you are going to render your model/s and how much time are you going to spend on the small details of the texture. If you don't have a budget issue, then it doesn't matter, just buy the latest best CPU with the best cooling system.
I have the i7-8700k and I'm very happy with it!

[fprico]

Hi,

Thanks for your answer. I don't think fusion 360 render is single threaded, As I think cloud render is the fastest and it suppose they use a lot numbers of cores. Maybe Intel has some features that makes it faster for rendering.

[TrippyLighting]

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@fprico wrote:

. I don't think fusion 360 render is single threaded, 

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Correct, but no one in this thread made that statement 😉

[Beyondforce]

Hey @fprico,

To sum up this chat... I don't believe F360 is optimized for hyperthreading. Which means you need to look for CPU with high speed. My i7-8700k is OC to 4.8GhZ, the i9-9900 can run up to 5.0GhZ without OC.
That means if I switch to the i9, I won't feel much of a difference except in my pocket 😉
But, if you are also using blender, then you should think about hyperthreading because it's optimized for that.

If you are going to do a lot of renderings, then F360 cloud points could be a good solution for you.
Here is a good video about hyperthreading. It can be a bit confusing to understand sometimes 🙂
https://www.youtube.com/watch?v=wnS50lJicXc

p.s
Don't be shy and check out the benchmark table at tesreg.com. You are more than welcome to invite people to test their machine and update the table. This benchmark table is to serve all of us and it will help us to save a lot of time and money!

Cheers guys.

[TrippyLighting]

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@Beyondforce wrote:

But, if you are also using blender, then you should think about hyperthreading because it's optimized for that.

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Blender's builtin Cycles render engine and realtime Eevee render engine can rely heavily on the GPU so a good range graphics card would help in that aspect.

[Beyondforce]

@TrippyLighting,
You are right... but I just want to add an interesting statement from blender:
"Most strikingly so-far is that the performance of CPUs is in a similar range as GPUs, especially when compared to costs of hardware. When shots get more complex, CPUs win the performance battle. That confirms our own experience that fast GPU is great for previewing and lighting work, and fast CPU is great for the production rendering. But… who knows what the future brings."
https://code.blender.org/2016/02/new-cycles-benchmark/

It basically means, it's all about the $$$ 🙂

[fprico]

Hi, 

I think we are talking of different things. I am talking about the fastest for rendering in Fusion. I think the more cores the better in this case 3900x will be faster. I have seen some benchmarks in Cinebench and Corona and 3900x surpass the 9900k considerably. I don't know in Fusion 360.

For modeling I know the faster single core is the best. But also in this case the 3900x is very fast with 4.6 ghz turbo, also the new arquitecture contributes in speed so 4.6ghz could be near in speed to the 9900k.

Regards 

[fprico]

I have seen cinebench result of the 8700k and the 2700 and you are right the 8700k is slightly fast, also you are compearing the 8700k with overclocking. May be thats why its faster in fusion 360 render.

When we compare 9900k and 3900x the 3900x have about 1000 points more in cinebench 15.

[Beyondforce]

Hi @fprico,
Maybe you are right, maybe the 3900x is faster than 8700k and 9900k.
Unfortunately, we cannot rely on Cinebench and Corona in regards to Fusion 360. We must see an actual test that was performed in Fusion 360.
If you go for the 3900x, then please let me know and I will help do the test!

Ben.

[MoshiurRashid]

A core i7 will do it, I guess

[Anonymous]

Hi everybody.
I have Ryzen-3700x at home, and i7-8700 at work.
According to my feelings, the 8700 is faster.
But I can check your test.

[Beyondforce]

Did you check out tesreg.com?

[Anonymous]

Yes.

Tomorrow at work I will do the 8700th test.

[Anonymous]

I checked the performance of the i7-8700 at work.
It turned out that it renders more slowly than the 3700x.

In the photo, the processor is 2700x. It’s just that my 3700x was not on the list.

[Beyondforce]

Do you have the 3700x?