Hello Furry-Ball community!
I have some problems with rendering. If I render my model with "1" pressed (non-Subviv-mode) - everything looks just fine.
But if I press "3" to turn the Sudivisions-Mode on - you will see some black artefacts at the model. The material I use is a FurryBall material and also the lighting. Don't really know what to do, please help me!

CPU: i5 4670
GPU: Geforce GTX970
RAM: 8Gb
Maya 2016
FurryBall RT

Isn't there 2 geometries so close together? It looks that it became more closer with subdiv. 3.

You can try to modify this, or try to play with NEAR and FAR plane on camera.

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Jan

Unfortunately it didn't help, but I found out the reason - actualy problems begin not by subdiv. mode, but by BumpMap adding! After I just press "File" as a source for BumpMap - these artefacts appear again. Any idea?

Try to display normal pass and uv pass to check it is ok.
You can send to us your scene.
Also from your post isn't know whether you solved your problem with subdivision, whether your problem occurred with subdivision or without it, which texture do you use or whether you use only empty file node etc.