20 votes

Why/how does tile size effect performance?

The difference and why there are different optimal bucket sizes comes from the size and design of on chip cache/memory of cpu or gpu. The gpu has a massive amount of cores. But they are dumb and ...
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20 votes
Accepted

Blender 2.78 with Windows 10 lags when interacting with the UI

I found the solution, right click on the blender shortcut>Run with Graphics Processor>Integrated Graphics. It should run smooth when you do that. No need to roll back any graphics drivers, just use ...
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  • 216
17 votes

Which Mac is suitable for Blender 2.8?

Since hardware questions and computer recommendations are considered off topic here, and this is a frequent topic that often comes up in new questions, here is a somewhat canonical answer that ...
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  • 1,150
13 votes

Why can't I use GPU rendering in Blender?

Blender Cycles relies on GPU compute languages like CUDA or more recently OpenCL. CUDA is exclusive to Nvidia and while OpenCL is technically cross platform, in practice AMD's implementation is the ...
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  • 1,620
12 votes

Blender 2.78 with Windows 10 lags when interacting with the UI

I don't have enough reputation to comment on Sam's post, but he's right. I wanted to stream a game last night and downloaded Nvidia's Geforce Experience for Shadowplay (which updated a driver). Opened ...
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  • 121
12 votes

Why can't I use GPU rendering in Blender?

I'm quite surprised at the amount of false information here. First off Intel does indeed support OpenCL, as far as I can see up to 2.1. Not only this, but I have actual field experience with ...
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  • 250
11 votes
Accepted

Does Blender support dual-GPU rendering if the two GPUs aren't the same?

You can, as long they are from the same brand (AMD, or NVidia) you should be able to use them simultaneously to render in Blender Cycles. If you keep them out of any proprietary GPU pairing ...
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9 votes

Blender 2.8 Beta: No compatible GPUs found on iMac (2018)

There is no OpenCL support for Blender 2.80 BETA on macOS and it likely won't come back in 2.80 RC or Final. Hi, There was a growing payload of bugs in Cycles related on OpenCL on macOS ...
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  • 6,525
8 votes

nVidia driver causes flickering viewport background

After about a year with the same issue, I found a solution: use Blender in REAL fullscreen mode. By that, I mean, do not use it with maximized window, go to Window > Toggle Window Fullscreen. This ...
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6 votes

Blender 2.78 with Windows 10 lags when interacting with the UI

Have the same computer specs on a Dell 7559. Had the same problem when I updated the NVidia drivers to the recent Geforce Experience ver 376.09. I finally uninstalled this driver and went back to the ...
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  • 61
6 votes

How to write a small program to use the Crayola Easy Animation Studio with Blender?

The mannequin in the package is simply a few bits of plastic that clip together, there are no electronics in it. The included app that does the animation takes a photo of the mannequin and detects the ...
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  • 53.8k
6 votes

Why can't I use GPU rendering in Blender?

The GPU option doesn't show because you don't have a supported dedicated GPU. Intel HD graphics is an integrated graphics solution, which realistically won't work with Blender. Ivy Bridge is the name ...
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  • 1,530
5 votes

CUDA error: Out of memory in cuMemAlloc(&device_pointer, size)

There are two options. First: Your scene render is bigger then your GTX 960 memory. Solution: Change render to CPU. Second: You have active 'render preview mode' and 'final render' at once. ...
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  • 17.1k
5 votes

Video editing in mediocre hardware

Proxy feature is designed for that purpose, make it easier to edit heavy video sequences. Generate 25% proxies of your strips, use those for editing (by choosing them as ...
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  • 3,357
5 votes

Why/how does tile size effect performance?

One thing not mentioned that is important for efficiency on multi-core hyperthreaded machines is the time cost of "tile stragglers." My machine has 12 cores and will spawn 24 rendering threads which ...
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5 votes

GPU not showing up in Blender?

You need to install nvidia-cuda-toolkit because blender uses this toolkit in order to drive your nvidia card. apt-get install nvidia-cuda-toolkit You should also ...
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5 votes

eGPU Vega 56 (Blackmagic) Mac + cycles problem

You won't be able to use GPU rendering with Cycles. Apple has deprecated OpenCL for macOS 10.14 and future releases. Since macOS won't have any updates for the OpenCL compiler and therefore no bug ...
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4 votes
Accepted

Accessing the RMB feature on a Mac laptop

Yeah, it must be selected. To select it with no RMB, you must change your user settings. Now go to the "Input" tab and change to LEFT for select
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  • 2,246
4 votes
Accepted

Is it possible to both GPU and CPU render in the same Blender instance?

Kinda but it's not recommended. You could have 2 instances blender open and set one to cpu and the other to gpu. By turning on placeholder under the render tab you ...
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  • 347
4 votes

Can mining rig be used for blender rendering?

I went out and purchased a P106-90 video card for about $70. The card showed up properly on windows 10 and automatically installed the drivers. Blender automatically detected the card And it cut ...
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  • 1,193
4 votes
Accepted

Are mining systems suitable for use as a render farm?

Judging from Blenchmark, yes. I realize that it has been closed down for a while so its results should be taken with a grain of salt, but I don't think they're completely irrelevant. The mobo you ...
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  • 4,667
4 votes
Accepted

A graphics card and driver with support for OpenGL 3.3 or higher is required error

Unfortunately your graphics card doesn't fulfill the minimum requirements of Blender 2.8. The Radeon HD 6530D has the old Terascale 2 architecture and GCN first generation or newer is required. You ...
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4 votes
Accepted

Switching from Mac to PC - Questions regarding GPU-rendering

(1) Should I render with the CPU or GPU? If you have a powerful GPU with enough memory to handle the scene, it is preferable to use the GPU or a combination of CPU and GPU. The NVIDIA GeForce RTX ...
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3 votes

Geforce Gtx1070 - Supported or not?

Yes, Blender 2.78 and above versions all have support for Pascal architecture (10 series)
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3 votes

Can mining rig be used for blender rendering?

If the GPUs supports either CUDA or OpenCL it will most likely work. Check https://docs.blender.org/manual/en/dev/render/cycles/gpu_rendering.html for more info about Blender/Cycles GPU rendering.
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3 votes
Accepted

How to limit VRAM usage for Blender?

Q: Is there a way to limit the amount of VRAM blender uses? A: NO Example: if your scene need 2GB of VRAM, Blender need 2GB VRAM for render this scene. No other way. Imagine, you want to pour 2l ...
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  • 2,112
3 votes

What is fastest, rendering on a CPU or a GPU?

Rendering is an extremely complicated process, thus the actual rendertime of a given scene depends on vastly more things than the actual hardware. Things such as scene size, shader complexity, and ...
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  • 24.4k
3 votes

How to speed up when blender has suddenly slowed down?

Yes, this is normal. The fact that the CPU utilization was so low tells me that your daughter has probably 'baked'[1] the simulation to a disk cache so most of the 'work' will be showing up in the ...
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  • 131
3 votes
Accepted

Can rtx graphics cards run cycles renders in realtime?

Cycles is not a real-time renderer. It is possible to have very fast Cycles preview that could be called 'real-time' with high end graphics cards or/and extremely simple scenes, however if you need ...
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