# gpu usage very low - why? **URL:** \ **Category:** Issues\ **Created:** [June 12, 2023, 7:13pm UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415 "2023-06-12T19:13:09Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![paul\_mowbray1](https://avatars.discourse-cdn.com/v4/letter/p/ea5d25/32.png) [@paul\_mowbray1](https://forums.chaos.com/u/paul_mowbray1)\ **Post date:** [June 12, 2023, 7:13pm UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/1 "2023-06-12T19:13:09Z")
Hi using the vray benchmark scene, I am only getting 4-5% GPU usage after the first 2-4 seconds of the render , using RTX what gives? using a 4090 my rtx score is ~ 5717 ![vrays-rtx.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/5/c/5cb55bc0726d0e16b4e3bb4d9753f266d2773380.jpeg) ![gpu-usage.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/d/8/d8aeb6a4c6c4369ae3f236537aeced6fb743a71d.jpeg) kind regards Harv ---
**Author:** ![vladimir\_krastev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/vladimir_krastev/32/42177_2.png) [@vladimir\_krastev](https://forums.chaos.com/u/vladimir_krastev)\ **Post date:** [June 13, 2023, 2:20pm UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/2 "2023-06-13T14:20:13Z")
Hi, thanks for posting. What host platform do you use (for example 3dsMax)? Your result seems normal according to the [V-Ray Benchmark statistics](https://benchmark.chaos.com/v5/vray-gpu-rtx?gpu=4090%3B1&index=1&ordering=desc&by=avg&my-scores-only=false) for a single RTX 4090. Please test you video card with dedicated performance testing software. The Task Manager is not a reliable diagnostics tool for GPU. If you find your V-Ray GPU performing slow, please share a bit more info about this. ---
**Author:** ![paul\_mowbray1](https://avatars.discourse-cdn.com/v4/letter/p/ea5d25/32.png) [@paul\_mowbray1](https://forums.chaos.com/u/paul_mowbray1)\ **Post date:** [June 13, 2023, 2:41pm UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/3 "2023-06-13T14:41:03Z")
Hi, thanks for the reply I agree the benchmarks are fine, was just wondering why the GPU utilisation was soo low? I’m using 3ds max. I’m doing a comparison with blender and vray scenes, and blender GPU utilisation hits 80-90 consistently, where as my Vray scene is under 20% again , this is all through windows task manager I will get IT to install GPU-Z , and I will monitor with that and report back ---
**Author:** ![vladimir\_krastev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/vladimir_krastev/32/42177_2.png) [@vladimir\_krastev](https://forums.chaos.com/u/vladimir_krastev)\ **Post date:** [June 13, 2023, 2:51pm UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/4 "2023-06-13T14:51:06Z")
Hi, since V-Ray Benchmark shows normal results then your system is fine. If you have issues using V-Ray GPU these are most likely related to something in the scene. You could also be running out of video memory. ---
**Author:** ![paul\_mowbray1](https://avatars.discourse-cdn.com/v4/letter/p/ea5d25/32.png) [@paul\_mowbray1](https://forums.chaos.com/u/paul_mowbray1)\ **Post date:** [June 13, 2023, 2:59pm UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/5 "2023-06-13T14:59:31Z")
hi β€œstats” tab says~13gb used of ~24gb I will try with over ride material too, just to check just as a quick question, if everything is fine in scenes, what should GPU utilisation be running at, have u a example scene where it runs high? ---
**Author:** ![vladimir\_krastev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/vladimir_krastev/32/42177_2.png) [@vladimir\_krastev](https://forums.chaos.com/u/vladimir_krastev)\ **Post date:** [June 14, 2023, 2:06pm UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/6 "2023-06-14T14:06:33Z")
Where do you monitor the GPU utilisation? Any scene should be fully utilising the GPU. Try to import Cosmos assets and a hdri lighting and test. Make sure the test scene renders for a bit more time, not just a few seconds. ---
**Author:** ![paul\_mowbray1](https://avatars.discourse-cdn.com/v4/letter/p/ea5d25/32.png) [@paul\_mowbray1](https://forums.chaos.com/u/paul_mowbray1)\ **Post date:** [June 15, 2023, 9:22am UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/7 "2023-06-15T09:22:32Z")
hi iv downloaded GPU-z , GPU load is showing close to full load πŸ™‚ ---
**Author:** ![vladimir\_krastev](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/vladimir_krastev/32/42177_2.png) [@vladimir\_krastev](https://forums.chaos.com/u/vladimir_krastev)\ **Post date:** [June 15, 2023, 10:51am UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/8 "2023-06-15T10:51:47Z")
There you have it πŸ˜„ ---
**Author:** ![paul\_mowbray1](https://avatars.discourse-cdn.com/v4/letter/p/ea5d25/32.png) [@paul\_mowbray1](https://forums.chaos.com/u/paul_mowbray1)\ **Post date:** [June 15, 2023, 12:07pm UTC](https://forums.chaos.com/t/gpu-usage-very-low-why/115415/9 "2023-06-15T12:07:38Z")
indeed!! πŸ™‚