If the fan does not start during playing a heavy game or high GPU load then you can have a faulty fan or another issue. This does improve your GPU thermals when the card is idle or when the GPU load is low.
In some graphics cards, you can also disable the semi-passive cooling mode and switch to active fan cooling mode via bundled graphics card software or utility for fans to spin all the time.
Note: In semi-passive cooling mode, the fan may spin during powering on the PC and then stops during idle or low workload situations. However, if the fan is not spinning under high GPU load or when running heavy games then it is something to be worried about, and have to identify the real cause of it. So, in this case, there is nothing to worry about as it is a built-in feature of the card, which is incorporated to provide cool and quiet operation.
Some of the prominent examples of such graphics cards include the Gigabyte Gaming series (3D Active Fan technology), Asus ROG Strix series, MSI GAMING X, ARMOR series (ZeroFrozr technology) cards, etc. Usually, this temperature limit is around 60☌ for most of such cards. This is because some graphics cards come with semi-passive cooling mode, where the fans stop spinning during idle or in low load conditions unless certain temperature threshold limit is reached, and they start automatically when the load on the GPU increases or the factory specified temperature threshold limit is crossed. Without getting into any panic mode, first, you have to check that whether the fans of your graphics card are not spinning at all or they are spinning when playing a game or during a GPU intensive workload. Below mentioned guide applies to both NVIDIA and AMD graphics cards. In most of the cases, the GPU works when fan not spinning, but you can face some issues where both fan and GPU are not working, or when fans are working but GPU is not working. Here are the various reasons and their solutions for the ‘graphics card not spinning’ problem. So, here I am going to list down list almost every possible cause for GPU fans not spinning problems along with their solutions. Some of them are related to hardware or software fault, and some of them can be due to some misunderstanding by the users. There can be several reasons or causes that may result in a graphics card fan not to spin. So, identifying the cause of this ‘fan not spinning problem’ should be your first priority, so that you can take appropriate steps to fix it. In some of the serious cases, overheating may result in damage to some of the graphics card components. If your fan fails to spin at high load then your GPU and even VRAM & VRM will overheat and can throttle down to lower speeds or frequencies card, and in extreme cases, the card can shut down to prevent itself from any damage. The use of AI Neuronal Network technology in OptiX 5.0 to enhance the process of denoising and cebas' engineering work on finalRender's trueHybrid™ technology offers a bright future towards higher quality photo-realistic images in much lesser time.A fan is an active cooling component of a graphics card and if it is not spinning at all or not spinning properly, then it is a serious issue that should be resolved as quickly as possible. Our very first integration tests revealed right from the start that NVIDIA has created an exceptional piece of software engineering by combining the power of AI and their powerful GPU hardware to surmount what has bothered every single GPU software developer for years - Noise in the image. This image shows the OptiX AI-Denoiser running in finalRender at 100 samples after only 45 seconds of rendering. Users can expect ongoing innovative updates as finalRender progresses. Our new finalRender's latest addition is the NVIDIA's OptiX 5.0 AI Denoiser feature.
Following the launch of our latest finalRender trueHybrid™, cebas' mission as always, is dedicated to getting the most sophisticated renderer into the hands of the artists affordably by incorporating latest NVIDIA GPU technology combined with cebas CPU enhancements, to achieve a powerful as well as an unique mix of processing power. Cebas Visual Technology, founded in Heidelberg, Germany and headquartered in Victoria, BC Canada, has been developing 3dsMax plugins for visual technology since 1988.