Blender 4.2.0 Crashes During Cycles Rendering – Seeking Advice

memenov

Hey all,

I'm experiencing crashes in Blender 4.2.0 whenever I use Cycles for rendering. The crashes start as soon as my model becomes more complex with higher geometry. Blender closes without any error messages, which is really frustrating. My PC is generally very stable while gaming, but it crashes consistently during 3D projects, so I have to Ctrl + S constantly to avoid losing progress.

I've learned that Intel recently released a new BIOS update that might address this issue, but I haven't tried it yet. I'd prefer to explore other solutions before updating the BIOS. I've monitored my temps, and they seem normal, never exceeding 85°C.

Today, I also experienced a crash in Substance Painter for the first time, which adds to my concerns. I'm torn between trying the BIOS update, possibly RMA-ing the CPU, or sticking with it since the PC is stable in all other tasks, except for 3D modeling and texturing, which seem to be too much for my system.

My PC Specs:

• Intel Core i9-14900k + 360mm liquid cooler
• Nvidia RTX 4090 FE
• 32GB DDR5 6000MHz (running at 4800MHz out of the box)
• Asus Tuf 1000W PSU

Any ideas on what else I could try?

okidoki

Even if this video card seems to have 24GB of VRAM.. you might simple enable the statusbar statistics to show how much it uses.. because there are different options for the  samplings in viewport and final render possible ( also different possibilities for some modifiers ). You might also have a look in the crash log ( BlenderDocu Troubleshoouting -> Crash ) or enable some more log info via the command line (https://docs.blender.org/manual/en/latest/advanced/command_line/arguments.html#command-line-args)..

sacboi

"The crashes start as soon as my model becomes more complex with higher geometry."

All drivers updated?

and imo 32GB RAM may not be as performant for what you're trying todo?!

memenov

sacboi said:

"The crashes start as soon as my model becomes more complex with higher geometry."

All drivers updated?

and imo 32GB RAM may not be as performant for what you're trying todo?!

All drivers are up to date.

I thought 32GB should be more than enough, as my previous PC had only 16GB of DDR4 RAM and I rarely had any crashes.

memenov

okidoki said:

Even if this video card seems to have 24GB of VRAM.. you might simple enable the statusbar statistics to show how much it uses.. because there are different options for the  samplings in viewport and final render possible ( also different possibilities for some modifiers ). You might also have a look in the crash log (https://docs.blender.org/manual/en/latest/troubleshooting/crash.html) or enable some more log info via the command line (https://docs.blender.org/manual/en/latest/advanced/command_line/arguments.html#command-line-args)..

I will take a look into these later, as I try to reproduce the crash.

(First link not working but I assume its a guide where to find the crashlog?)

I will come back once I have the results.

okidoki

memenov said:

(First link not working but I assume its a guide where to find the crashlog?)

Indeed i simple added the URL in parenthesis but it's better to have spaces or use the link-feature... i edited it.