# Vulkan and opencl slower on windows than linux **URL:** \ **Category:** Vulkan\ **Created:** [June 19, 2025, 8:36pm UTC](https://forums.developer.nvidia.com/t/vulkan-and-opencl-slower-on-windows-than-linux/336642 "2025-06-19T20:36:17Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![patrickhwood](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@patrickhwood](https://forums.developer.nvidia.com/u/patrickhwood)\ **Post date:** [June 19, 2025, 8:36pm UTC](https://forums.developer.nvidia.com/t/vulkan-and-opencl-slower-on-windows-than-linux/336642/1 "2025-06-19T20:36:17Z")
I’ve noticed on my dual-boot 5090 system, vulkan and opencl are slower on windows than linux with the geekbench benchmark. 5090 windows: Vulkan: 257122 [Alienware Alienware Area-51 AAT2250 - Geekbench](https://browser.geekbench.com/v6/compute/4264139) OpenCL: 369996 [Alienware Alienware Area-51 AAT2250 - Geekbench](https://browser.geekbench.com/v6/compute/4264165) 5090 linux: Vulkan: 289813 [Alienware Alienware Area-51 AAT2250 - Geekbench](https://browser.geekbench.com/v6/compute/4264206) OpenCL: 450564 [Alienware Alienware Area-51 AAT2250 - Geekbench](https://browser.geekbench.com/v6/compute/4264209) I’ve noticed similar disparities with some of our custom OpenGL code as well. Any ideas what’s going on here? The vulkan times aren’t too far off (just less than 10%) but the opencl difference it pretty big. ---
**Author:** ![patrickhwood](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@patrickhwood](https://forums.developer.nvidia.com/u/patrickhwood)\ **Post date:** [June 19, 2025, 9:56pm UTC](https://forums.developer.nvidia.com/t/vulkan-and-opencl-slower-on-windows-than-linux/336642/2 "2025-06-19T21:56:13Z")
Same thing with an RTX 4090, on a dual boot Alienware Aurora R15: 4090 windows: Vulkan: 253740 OpenCL: 326621 [Alienware Alienware Aurora R15 - Geekbench](https://browser.geekbench.com/v6/compute/4341635) 4090 linux: Vulkan: 336294 [Alienware Alienware Aurora R15 - Geekbench](https://browser.geekbench.com/v6/compute/4264189) OpenCL: 379062 [Alienware Alienware Aurora R15 - Geekbench](https://browser.geekbench.com/v6/compute/4264194) ---
**Author:** ![Sora](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/sora/32/16923_2.png) [@Sora](https://forums.developer.nvidia.com/u/Sora)\ **Post date:** [June 26, 2025, 1:47am UTC](https://forums.developer.nvidia.com/t/vulkan-and-opencl-slower-on-windows-than-linux/336642/3 "2025-06-26T01:47:07Z")
on linux you’re not fighting with the dxgkern for hardware time.