# \#cpu **URL:** https://discourse.mcneel.com/tag/cpu/280.md [Latest](https://discourse.mcneel.com/latest.md) · [Categories](https://discourse.mcneel.com/categories.md) · [Tags](https://discourse.mcneel.com/tags.md) --- ## [Grasshopper runs slowly and doesn’t use multiple cores](https://discourse.mcneel.com/t/grasshopper-runs-slowly-and-doesn-t-use-multiple-cores/211139)
**Author:** [@Anil\_verma](https://discourse.mcneel.com/u/Anil_verma)\ **Replies:** 9\ **Last updated:** [October 21, 2025, 10:25am UTC](https://discourse.mcneel.com/t/grasshopper-runs-slowly-and-doesn-t-use-multiple-cores/211139 "2025-10-21T10:25:33Z")
Hi everyone, I’m facing a performance issue in Grasshopper: my definitions take a very long time to compute, even though my system shows plenty of unused CPU and RAM. Symptoms: CPU usage stays around 5–10% RAM u… --- ## [V-Ray for Rhino shows full PNG transparency on CPU, but not on GPU](https://discourse.mcneel.com/t/v-ray-for-rhino-shows-full-png-transparency-on-cpu-but-not-on-gpu/207359)
**Author:** [@Bar\_Wolpert](https://discourse.mcneel.com/u/Bar_Wolpert)\ **Replies:** 1\ **Last updated:** [July 22, 2025, 7:45am UTC](https://discourse.mcneel.com/t/v-ray-for-rhino-shows-full-png-transparency-on-cpu-but-not-on-gpu/207359 "2025-07-22T07:45:24Z")
Hello all, I’m trying to render this image, and it’s only fully transparent when using the CPU, which I understand is much weaker. What can I do? Thanks a lot:) ignore that the png is upside-down --- ## [Intel Lunar Lake is Announced](https://discourse.mcneel.com/t/intel-lunar-lake-is-announced/190625)
**Author:** [@bimolicense](https://discourse.mcneel.com/u/bimolicense)\ **Replies:** 1\ **Last updated:** [September 4, 2024, 9:35am UTC](https://discourse.mcneel.com/t/intel-lunar-lake-is-announced/190625 "2024-09-04T09:35:21Z")
Intel Lunar Lake has been officially announced. Another exciting moment for customers to be able to choose from a wider range of products to use between AMD, Intel and Snapdragon. --- ## [CPU Processor Recommendations for Grasshopper](https://discourse.mcneel.com/t/cpu-processor-recommendations-for-grasshopper/91598)
**Author:** [@luisdelaparragalvan](https://discourse.mcneel.com/u/luisdelaparragalvan)\ **Replies:** 8\ **Last updated:** [December 27, 2019, 1:13pm UTC](https://discourse.mcneel.com/t/cpu-processor-recommendations-for-grasshopper/91598 "2019-12-27T13:13:42Z")
Hello all, There a was post in 2012 by David Rutten explaining Rhino and Grasshopper hardware requirements and suggestions: https://www.grasshopper3d.com/forum/topics/hardware-requirements-and-suggestions I would like … --- ## [Technology stack and hardware resources use](https://discourse.mcneel.com/t/technology-stack-and-hardware-resources-use/176631)
**Author:** [@Aditya\_Kaushik](https://discourse.mcneel.com/u/Aditya_Kaushik)\ **Replies:** 1\ **Last updated:** [February 26, 2024, 9:11pm UTC](https://discourse.mcneel.com/t/technology-stack-and-hardware-resources-use/176631 "2024-02-26T21:11:45Z")
Hi With all the various ways to use the Rhino technology stack, I’m trying to understand how to best use these and also best use the hardware usage. Since I’m only looking for using the resources efficiently and not rea… --- ## [Ram and cpu control using Grasshopper](https://discourse.mcneel.com/t/ram-and-cpu-control-using-grasshopper/159140)
**Author:** [@Anil\_verma](https://discourse.mcneel.com/u/Anil_verma)\ **Replies:** 0\ **Last updated:** [April 29, 2023, 5:21pm UTC](https://discourse.mcneel.com/t/ram-and-cpu-control-using-grasshopper/159140 "2023-04-29T17:21:13Z")
@DavidRutten Hello sir, Is there any way that can control system RAM and CPU usage while running Grasshopper script, Because most of the time it says “not responding”. May be in my script has some problem in logic or… --- ## [GPU Nvidia Quadro M2000m](https://discourse.mcneel.com/t/gpu-nvidia-quadro-m2000m/151272)
**Author:** [@Marta\_Nicau\_Castanho](https://discourse.mcneel.com/u/Marta_Nicau_Castanho)\ **Replies:** 11\ **Last updated:** [November 29, 2022, 5:32am UTC](https://discourse.mcneel.com/t/gpu-nvidia-quadro-m2000m/151272 "2022-11-29T05:32:48Z")
Hi all! With Windows 11 (not updated to the latest version, because it disables all my .exe programs) and an Nvidia Quadro M2000m, I’m having problems making the GPU work with Rhino7. I’ve already changed the graphic se… --- ## [MacOs - Rhino WIP - CPU usage](https://discourse.mcneel.com/t/macos-rhino-wip-cpu-usage/150334)
**Author:** [@christophk](https://discourse.mcneel.com/u/christophk)\ **Replies:** 2\ **Last updated:** [November 9, 2022, 10:45am UTC](https://discourse.mcneel.com/t/macos-rhino-wip-cpu-usage/150334 "2022-11-09T10:45:55Z")
Hi Forum I work a lot with drawings. I sometimes am importing vectorised PDF files into Rhino with many many lines and information in it. I then want to scale them in Rhino. This process takes a long time, can be 15-… --- ## [Running Grasshopper solver on separate machine](https://discourse.mcneel.com/t/running-grasshopper-solver-on-separate-machine/147162)
**Author:** [@feklee](https://discourse.mcneel.com/u/feklee)\ **Replies:** 1\ **Last updated:** [August 30, 2022, 5:41am UTC](https://discourse.mcneel.com/t/running-grasshopper-solver-on-separate-machine/147162 "2022-08-30T05:41:56Z")
For a temporary project, I need a lot of CPU power to solve some big computations. So I would like to run them on an external machine, preferably connected via network. This is not possible, right? (of course, I could w… --- ## [Rhino 7 creating meshes when in shaded view](https://discourse.mcneel.com/t/rhino-7-creating-meshes-when-in-shaded-view/143294)
**Author:** [@Nelsot](https://discourse.mcneel.com/u/Nelsot)\ **Replies:** 3\ **Last updated:** [June 7, 2022, 2:35pm UTC](https://discourse.mcneel.com/t/rhino-7-creating-meshes-when-in-shaded-view/143294 "2022-06-07T14:35:12Z")
Hello, I experienced a crash on a large file I am working on as practice. ever since, the file has become unusable, even earlier versions. everytime I make an edit or even move the display rhino is remaking all the mesh… --- ## [CPU for Rhino 7 for Windows](https://discourse.mcneel.com/t/cpu-for-rhino-7-for-windows/134931)
**Author:** [@user2309](https://discourse.mcneel.com/u/user2309)\ **Replies:** 11\ **Last updated:** [December 14, 2021, 5:59am UTC](https://discourse.mcneel.com/t/cpu-for-rhino-7-for-windows/134931 "2021-12-14T05:59:07Z")
Hello, I just changed the CPU and some other parts on my PC and Rhino 7 got really slow when making a model with many small parts, doing Flow command, creating mesh from NURBS, exploding and joining a model with many sm… --- ## [AMD CPUs artificially slowed down in Rhino?](https://discourse.mcneel.com/t/amd-cpus-artificially-slowed-down-in-rhino/109170)
**Author:** [@hitenter](https://discourse.mcneel.com/u/hitenter)\ **Replies:** 6\ **Last updated:** [September 23, 2020, 6:36pm UTC](https://discourse.mcneel.com/t/amd-cpus-artificially-slowed-down-in-rhino/109170 "2020-09-23T18:36:52Z")
The availability of OptiX in the latest WIP made me do a few tests. I just wanted to compare if the performance gains of OptiX over CUDA in RhinoCycles are inline with the gains that the big brother BlenderCycles is able… --- ## [Hardware requirements for a decent system for rendering with vray](https://discourse.mcneel.com/t/hardware-requirements-for-a-decent-system-for-rendering-with-vray/108375)
**Author:** [@guntergrass](https://discourse.mcneel.com/u/guntergrass)\ **Replies:** 8\ **Last updated:** [September 10, 2020, 5:41am UTC](https://discourse.mcneel.com/t/hardware-requirements-for-a-decent-system-for-rendering-with-vray/108375 "2020-09-10T05:41:59Z")
Hello all, My office is looking to purchase a computer dedicated for rendering in house using Rhino and Vray in windows. To avoid raising thre how long is a piece of string question, we would like a solid machine, somew… --- ## [CPU and GPU upgrade suggestions](https://discourse.mcneel.com/t/cpu-and-gpu-upgrade-suggestions/103627)
**Author:** [@huet.marcantoine](https://discourse.mcneel.com/u/huet.marcantoine)\ **Replies:** 16\ **Last updated:** [June 17, 2020, 1:54am UTC](https://discourse.mcneel.com/t/cpu-and-gpu-upgrade-suggestions/103627 "2020-06-17T01:54:04Z")
Hi! My employee has a Lenovo P520 with these specs : Xeon E5-1620v4 (4 cores/8 threads, 3.5 GHz - 3.8 GHz) 32 go DDR4 Quadro M2000 (770 CUDA Cores, 4 go) 490W power supply She uses Rhino 6 with Vray (GPU rendering… --- ## [A CPU summary finally? CPU Holomark scores! Now with GPUs!](https://discourse.mcneel.com/t/a-cpu-summary-finally-cpu-holomark-scores-now-with-gpus/92028)
**Author:** [@nicholasm785](https://discourse.mcneel.com/u/nicholasm785)\ **Replies:** 5\ **Last updated:** [November 18, 2019, 12:58am UTC](https://discourse.mcneel.com/t/a-cpu-summary-finally-cpu-holomark-scores-now-with-gpus/92028 "2019-11-18T00:58:03Z")
A CPU summary finally??? CPU Holomark scores Now with GPUs Rhino 6, all done on 64bit version. Okay so it has been asked for a while, so I thought hey why not do it. There is a lot of people than want to know what dif… --- ## [A bug in my PC configuration](https://discourse.mcneel.com/t/a-bug-in-my-pc-configuration/77179)
**Author:** [@Jonish](https://discourse.mcneel.com/u/Jonish)\ **Replies:** 8\ **Last updated:** [January 11, 2019, 6:10pm UTC](https://discourse.mcneel.com/t/a-bug-in-my-pc-configuration/77179 "2019-01-11T18:10:53Z")
Hello everyone, I was wondering if you would be able to help me find a potential problem with my PC configuration. I have invested in i7 8700K and RTX 2070 and yet my results in Holomark are deeply disappointing, boost … --- ## [Crystal Maker Test Gems with .IOR in Thea Render](https://discourse.mcneel.com/t/crystal-maker-test-gems-with-ior-in-thea-render/35553)
**Author:** [@Thomas\_Helzle](https://discourse.mcneel.com/u/Thomas_Helzle)\ **Replies:** 2\ **Last updated:** [August 3, 2016, 3:51pm UTC](https://discourse.mcneel.com/t/crystal-maker-test-gems-with-ior-in-thea-render/35553 "2016-08-03T15:51:05Z")
Hey, I did a test in Thea Render with @DavidRutten 's “Crystal Maker” Grasshopper tool: I used a tiny 0.01 Edge Softening for some subtle edge-highlights and all the materials are lab-measured gems using .ior files fo…