GPU ram amount for extremely fast rendering

therhythmsoldier_a389d0d881

Is 32 or 64 gpu of ram memory good enough for extremely fast rendering

Daywalker Designs

Iray works best with graphic cards with matched amounts of memory. And unless you're talking about one of the RTX cards with 24 GB RAM, the best option is to get 2 GTX or RTX with 11 GB of RAM.

Zilvergrafix

GPU ram does not do faster rendering, I have 6Gb on my GTX1060 and one scene with a room interior does not render fast even fitted on my video ram (4.2Gb the scene), neither degrading the textures using scripts for half of size does faster too. 

nicstt

GPU RAM only influences speed in that if the scene drops to CPU, it will be slower. If it fits on card, you're good. Presuming you're talking about Iray that is.

3Delight uses CPU (and loves lots of cores), so more RAM there is good; 32 is decent, but 64 would likely be better there, you would have far fewer issues multitasking when lots of RAM. I have 64GB and never get above 54GB used; I multitask, and often have two instances of Studio open. I don't use 3Delight btw.

Padone

Zilvergrafix said:

one scene with a room interior does not render fast even fitted on my video ram

Any PBR engine has troubles when no direct light hits the scene. Interiors are hard to render fast, your best bet there would be using ghost lights. If the scene is to be rendered at night then your best option is to shoot day for night and use tone mapping to fit it. The 1060 is a good card and 6GB vram is good for any scene if you use the scene optimizer.

https://www.daz3d.com/scene-optimizer

https://www.daz3d.com/iray-ghost-light-kit-2

https://www.daz3d.com/forums/discussion/250541/tutorial-shooting-day-for-night

 

 

jmtbank

therhythmsoldier_a389d0d881 said:

Is 32 or 64 gpu of ram memory good enough for extremely fast rendering

The rule of thumb people have hit on previous threads seems to be a minimum of 2 times system memory than GPU (graphics card) memory.  With 3 times being ideal.

Daz hits your system memory limit when it prepares a scene for rendering. The time between clicking render and a few moments before seeing the first pass appear.  Because you may end up going over this part a few times before getting everything right, performance bottle necks here actually take up more of your personal time than most other stages of production.  [edit: not talking animation!]