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Got a brand new GPU (RTX 4080) to replace a RTX 2070 Super. Thought Blender would render faster but it simply does not work at all. When I switch to GPU rendering (on a defaut cube scene) everything stays gray, not a single path trace is launched.

I tried: -Cuda (Card recognized in the options) -Optix (Card recognized in the options) -Install latest (and previous) drivers, both Studio and Game ready version, none work. -Check / uncheck denoising -Viewport and Render Window (both doesn't work) -Several blender version (from 2.9 - 3.3 to 3.4 to even 3.5 Alpha)

What work: -Eevee -CPU rendering

The Gpu works well as expected on video games and other softwares such as DaVinci Resolve / fusion compositing.

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  • $\begingroup$ You might want to run DDU and fresh install the newest drivers $\endgroup$
    – Allen Simpson
    Dec 10, 2022 at 20:13

3 Answers 3

Reset to default
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FIXED:

Download the drivers through GeForce Experience.

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  • $\begingroup$ Hi @GeoffreyK! You can click the tick next to this (your own) answer, to mark it as accepted. Then others will see it's cleared up. $\endgroup$
    – Robin Betts ♦
    Dec 11, 2022 at 12:31
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I just had to deal with the same problem after updating my recent RTX 4080 driver. I tried waiting through the Cycles "kernel initialization" (a few minutes) in a default Blender scene. Works like a charm.

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You should try different graphics Driver which matches your new card.

Sometimes older version of drivers may not give you fast result.

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