Will GPU matter in 3Delight? Compare to Iray
I heard iRay uses more GPU than 3Delight.
It might depend on settings, such as 1, 2, 3, 4 mode, and what nodes.
But, I want to decide my GTX 750 ti 2GB, and deal with what it can do.
Not the best card, but will 3Delight (since iRay is more intensive) be slow?
Im going to use 1 to 2 genesis 3 models, a black background 2 simple primitives, and 1 prop.
will 15 minutes of animation be looong?
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3Delight does not use GPU, it only uses your computer's CPU.
How should I ensure that my 3Delight renders are photorealistic, fast, or acceptable?
With just the CPU...
RAM?
processor?
Yes, a faster processor will improve speed.
Also the number of cores does help. An 8 core will render faster than a 4 core processor, even if they have the same clock speed.
More RAM will improve speed...to a point. With 3Delight, virtual memory is used if you run low on actual RAM. So if there is enough RAM to hold the scene, the texture maps and the render process, there isn't really much of a boost...but if there isn't then yes, bumping up the amount will speed up things. For a moderate scene (one fully clothed character, hair, some props and 'scene' meshes) that's usually somewhere between 8 and 16 GB. Larger, more complex scenes or scenes with a lot of things like trees, will need more. In most cases, 32 GB is more than enough.
Now while it's true that 3Delight does not use a GPU to accelerate rendering, not having one and relying on an on board/built in video card can slow down a render...especially with 8GB of RAM or less. Because on board solutions share/reserve system RAM, it can cause the render to start using virtual memory, which is usually a disk drive (yeah, an SSD for the OS/swap space can be almost as fast as RAM, but it's not quite the same), thereby slowing it down.