Guys im experiencing severe VIEWPORT SLOWDOWNS in editmode and sculpt mode when sculpting on a mesh thats under 1mil polygons,on a gtx650 1Gb gpu(other specs are i72600 3.4Ghz,16GB DDR4 and blender installed on an SSD.)im using blender 2.9a right now. So im planning on buying a used or a new gpu thats around $150 price range to fix this issue. My current choices are GTX 1650 4GB or the RX 570 8GB. I have been looking for a while in the internet and only found rendering benchmarks.this doesnt help me much because,I want sculpting and viewport performance enhanced, without much lag.Its annoying when you do a simple grab ,only to the see the results after 3-5 secs. people are saying cuda is better for rendering. Im wondering how thats related to the viewport performance.Although openGL has received improvements there is a no benchmarks for viewport performance between the two. Can somebody explain this and help me make a good choice please?. thanks in advance.
P.S is it worth to consider the upgrade from rx570 to 580?
Should i consider the gtx 1060 3GB or the 6GB?
How would having more VRAM help in blender?
Well! For view-port you need both CPU and GPU if using Cycles. With EEVEE CPU is key for display refresh rate… The GPU is more rendering oriented and for Cycles as I experienced… The RAM is also a factor, DDR4 is faster than previous generations… and finally your display is also involved with its refreshment rate 1ms if possible… Depending on the size of your scene, the number of objects, textures, lighting there is a limit to what you can display in real time, either still or animated. Finally if you need to manage large and complex scenery, lots of vertices/faces then you need higher end hardware…
Hi.
I recommend that you get a good hardware monitor software (CPU, RAM and GPU) and check for yourself where the bottleneck occurs while you perform slow actions in Blender.
The performance issues in Edit and Sculpt mode are probably known to developers, and not your hardware issue. In any case, it is very likely that most of them are related to CPU, not GPU. Developers are currently working to improve performance.
Probably to work in Solid mode your GPU is not so bad. But for rendering in Eevee and Cycles at least 4GB vRAM is currently recommended. Eevee developer recommends that you get a GPU with as much vRAM as you can (GTX 1060 6GB is good). I recommend nvidia before AMD. But by this I don’t mean that you will get improvements working with Edit and Sculpt mode, but you could have future problems to render with that GPU.
If this is a typo and you really meant GPU, that if it is correct for Eevee.
Anyway the problems in Edit and Sculpt mode are due to own blender limitations, or because the user has a slow CPU (or not enough system RAM).
I would start with finding ways within your projects to use your computer resources efficiently.
If you have large scenes for example, can you make better use of layers so you are not unnecessarily processing many objects every time you drag the mouse?
Use multiple scenes.
Or can you make better use of various duplication methods?
Check the simplify box.
Better use of modifiers.
The list goes on and on.
Any budget upgrades will only provide limited relief until you reach your next bottleneck. I use a 10 year old i5 2nd gen with 12G ddr3 RAM and no GPU and rarely lags unless I get lazy with my project structure. Working more efficiently can solve many problems if you don’t have a big budget
everyone ,this post is about sculpting high poly models over 1mil polygons and viewport performance.not about rendering… and i am a game character artist so im not dealing with a lot of objects at once. that being said im thankful for your answers and will be looking for the right answer for my question.thank you
Hey, sorry bro. Hope I didn’t offend you or something. 980Ti is none-too-shabby for display purposes too, and if you ever needed to render something in Cycles/E-Cycles, it has got your back like a mofo. Whatever.