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CPU or GPU for rendering?

Anonymous
Not applicable
hello,
i'm in the search for new notebook up to price 700 eur, and i have a dilemma which one to buy.
so, I have few questions:
1st: is it more important to have more cpu cores or better gpu for faster rendering in archicad, artlantis, lumion etc.
2nd: some i7 cpu comes with only 2cores and others with 4 cores. is there significant difference?
3rd: how important is number of threads, because i saw AMD cpus with 4 cores and 4 threads, unlike the i7 which has 4 cores and 8 threads

Thank You very much!
14 REPLIES 14

Laszlo Nagy
Community Admin
Community Admin
1. As far as I know CPU is what is being used by most current rendering applications. Some applications start to appear that use the GPU or GPUs but there is only OctaneRender currently (that I know about) that is using GPUs:

http://archicad-talk.graphisoft.com/viewtopic.php?t=41417

So for ArchiCAD, Artlantis etc. CPU is more important.

2. A 4-core processor is better than a 2-core processor as it can handle 4 processing threads instead of 2.

3. Number of threads is what really counts. Intel has Hyperthreading which means that 1 physical core can run two processing threads in it. A 4-core 8-thread processor is better than a 4-core 4-thread processor. From the application's standpoint the former can process 8 threads for ArchiCAD or the rendering application, while the latter can process only 4 threads.
Even in Graphisoft's pages they say they recommend as many cores as possible:

http://www.graphisoft.hu/support/system_requirements/
Note: Processors with 4-8+ cores are recommended to fully exploit ArchiCAD 17's performance capabilities.
In the last several releases Graphisoft has made great efforts to fully utilize multi-core processors and get as much performance out of them as possible. This is especially true with AC17 where they specifically say 4-8+ cores is really recommended. Previous they only said you should use multi-core processors, which means at least 2 cores.
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Steve Jepson
Advisor
and what about now. Can ArtLantis 6 use GPU graphics card?

ArchiCAD 25 5010 USA - Windows 10 Pro 64x - Dell 7720 64 GB 2400MHz ECC - Xeon E3 1535M v6 4.20GHz - (2) 1TB M.2 PCIe Class 50 SSD's - 17.3" UHD IPS (3840x2160) - Nvidia Quadro P5000 16GB GDDR5 - Maxwell Studio/Render 5.2.1.49- Multilight 2 - Adobe Acrobat Pro

Nuge
Advocate
Try Octane for archicad

http://home.otoy.com/render/octane-render/


Nuge
AC25 i9 11900K / 128G ram / GTX 3090 / Enscape

Steve Jepson
Advisor
I want to know if Artlantis 6 can use GPU processing. That was not clear from what I was able to find on their website.

I don't think I need Octane. I have Maxwell Studio/Render 3.1,an older version of Artlantis Render, and of course CineRender in ArchiCAD.

ArchiCAD 25 5010 USA - Windows 10 Pro 64x - Dell 7720 64 GB 2400MHz ECC - Xeon E3 1535M v6 4.20GHz - (2) 1TB M.2 PCIe Class 50 SSD's - 17.3" UHD IPS (3840x2160) - Nvidia Quadro P5000 16GB GDDR5 - Maxwell Studio/Render 5.2.1.49- Multilight 2 - Adobe Acrobat Pro

Laszlo Nagy
Community Admin
Community Admin
I don't think Artlantis 6 uses GPU for rendering.

http://artlantis.com/en/features

If it did they would be widely publicizing it as it would be much much faster than CPU-based rendering:

http://www.gpurendering.com/technology/gpuVsCpuRendering.html
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Get Archicad Tips at https://twitter.com/laszlonagy
AMD Ryzen 1700X CPU, 48 GB RAM, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), WIN10 PRO ENG, AC20-AC25
Loving Archicad since 1995

Steve Jepson
Advisor
laszlonagy wrote:
I don't think Artlantis 6 uses GPU for rendering.

http://artlantis.com/en/features

If it did they would be widely publicizing it as it would be much much faster than CPU-based rendering:

http://www.gpurendering.com/technology/gpuVsCpuRendering.html
https://www.youtube.com/watch?v=6VHzONYfgUg

ArchiCAD 25 5010 USA - Windows 10 Pro 64x - Dell 7720 64 GB 2400MHz ECC - Xeon E3 1535M v6 4.20GHz - (2) 1TB M.2 PCIe Class 50 SSD's - 17.3" UHD IPS (3840x2160) - Nvidia Quadro P5000 16GB GDDR5 - Maxwell Studio/Render 5.2.1.49- Multilight 2 - Adobe Acrobat Pro

Steve Jepson
Advisor
laszlonagy wrote:
I don't think Artlantis 6 uses GPU for rendering.

http://artlantis.com/en/features

If it did they would be widely publicizing it as it would be much much faster than CPU-based rendering:

http://www.gpurendering.com/technology/gpuVsCpuRendering.html
https://www.youtube.com/watch?v=6VHzONYfgUg

http://blenderartists.org/forum/showthread.php?346401-Maxwell-Render-on-GPU-(CUDA)

ArchiCAD 25 5010 USA - Windows 10 Pro 64x - Dell 7720 64 GB 2400MHz ECC - Xeon E3 1535M v6 4.20GHz - (2) 1TB M.2 PCIe Class 50 SSD's - 17.3" UHD IPS (3840x2160) - Nvidia Quadro P5000 16GB GDDR5 - Maxwell Studio/Render 5.2.1.49- Multilight 2 - Adobe Acrobat Pro

Anonymous
Not applicable
I was wondering if there was a way to utilize my GPU for 3D view?
I have fiddled around with the Nvidia control panel and all that. But still, Archicad uses 0% of my GPU

I have a GeForce 870m and it has openGL 4.5 ( thats why I baught it. I thought it would help.)

Karl Ottenstein
Moderator
spacant wrote:
But still, Archicad uses 0% of my GPU
AFAIK, only BIMx uses the GPU. ArchiCAD itself does not:

http://helpcenter.graphisoft.com/technotes/setup/hardware-compatibility/recommended-hardware-for-gra...
One of the forum moderators   •   AC 25 USA and earlier   •   MacOS 11.6.7, iMac Pro

Anonymous
Not applicable
From what I can see, and from carefully selecting my GPU to run on artlantis in windows;

http://www.artlantis.com/en/support/faq/questions/show/1215

This link suggests that Artlantis 6 must use the GPU.

Laszlo Nagy
Community Admin
Community Admin
That link shows you only how to use the Dedicated GPU (NVidia or AMD card) instead of the integrated GPU (GPU on the Intel CPU - much less performance).
This does not mean that Artlantis is using the GPU instead of the CPU for rendering.

The application uses the GPU all the time to display stuff in 3D while you edit materials, change viewpoint, place lights, etc. That does not mean that it is using the GPU specifically when creating the Rendered image.
The application must be specifically written to use the GPU instead of the CPU. This usually results in "real-time" rendering.

For example, OctaneRender is using the GPU for rendering. Look what its wikipedia page says:

https://en.wikipedia.org/wiki/Octane_Render
Octane Render is a real-time 3D unbiased rendering application that was started by the New Zealand-based company Refractive Software, Ltd and OTOY took over on March 2012. The first non-beta stable version, v1.0, was released on 28 November 2012 and later versions of Octane Render continue to be deployed as a Web release software. It is the first commercially available unbiased renderer to work exclusively on the GPU (Graphics Processing Unit) and has the ability to work in real time. This allows users to modify materials, lighting and render settings “on the fly” because the rendering viewport updates immediately whenever a change is made. Octane Render runs exclusively on Nvidia's CUDA technology (which restricts it to running on video cards from Nvidia) although Octane Render 3.0 is planned to remove this restriction.
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AMD Ryzen 1700X CPU, 48 GB RAM, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
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Loving Archicad since 1995

Anonymous
Not applicable
I feel like I wasted all that money on a top-spec graphics card.
I had a look at Octane, and while I love integration in ArchiCAD, I am not so keen on the interface or workflow.
Oh well, Artlantis really needs GPU-base. Now.

Steve Jepson
Advisor
Maxwell Render 4 - coming very soon will render with GPU. Upgrades are for sale now.

ArchiCAD 25 5010 USA - Windows 10 Pro 64x - Dell 7720 64 GB 2400MHz ECC - Xeon E3 1535M v6 4.20GHz - (2) 1TB M.2 PCIe Class 50 SSD's - 17.3" UHD IPS (3840x2160) - Nvidia Quadro P5000 16GB GDDR5 - Maxwell Studio/Render 5.2.1.49- Multilight 2 - Adobe Acrobat Pro

alemanda
Participant
Lumion uses gpu so if you're going to use lumion you must have a fast Nvdia Gtx card.
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