GPU Caps Viewer: a free Windows utility for detailed GPU information and monitoring
GPU Caps Viewer is a Windows utility that reports GPU type, VRAM, OpenGL, Vulkan, OpenCL and CUDA support, and system details, with real-time load, temperature and fan monitoring for NVIDIA and AMD cards, plus stress tests and real-time 3D demos.
GPU Caps Viewer: GPU information, API reporting and stress testing
GPU Caps Viewer is a Windows utility from oZone3D.Net and Geeks3D that identifies graphics hardware, reports supported graphics and compute APIs, and provides real-time 3D demos and stress tests. The current release, version 1.64.4, is distributed as a 7-Zip archive without an installer and runs as a 32-bit application. It can monitor NVIDIA GeForce and AMD Radeon GPUs.
Core functionality
- API and extension reporting: Shows OpenGL, Vulkan, OpenCL and CUDA support levels, along with a list of OpenGL extensions. Each OpenGL extension can be opened on its description page in the OpenGL Extension Registry or NVIDIA's OpenGL specifications.
- Hardware and system information: Reports GPU type, video memory, driver version, and vendor and device IDs, along with CPU type and speed, system memory, operating system and PhysX version. OpenGL capabilities such as texture size and number of texture units are also listed.
- Demos and stress tests: Includes OpenGL and Vulkan real-time 3D demos and a GPU Burner-style stress test. Several stress demos can run at the same time to load the graphics card more heavily.
- Monitoring and reports: Displays GPU core temperature, GPU, memory and MCU load, and fan speed in real time. Full reports can be exported in text and XML formats. A graphics card validation feature uploads hardware data to the oZone3D.Net server and returns a link to a validation page.
Practical applications
- Development: Checks which API versions and extensions a graphics card exposes, which is useful when targeting specific features.
- Technical support: Text and XML reports give an outline of a system's graphics configuration for troubleshooting.
- Stability testing: Stress demos combined with temperature and load readings can help assess cooling and stability, for example after overclocking.
Overview
GPU Caps Viewer is a Freeware software in the category Graphics Applications developed by oZone[3D].Net.
The users of our client application UpdateStar have checked GPU Caps Viewer for updates 63 times during the last month.
The latest version of GPU Caps Viewer is 1.64.4.0, released on 10/08/2026. It was initially added to our database on 10/29/2007.
GPU Caps Viewer runs on the following operating systems: Windows.
Users of GPU Caps Viewer gave it a rating of 4 out of 5 stars.
Pros
- Displays GPU type, video memory amount, and driver version in a quick overview.
- Reports OpenGL, Vulkan, OpenCL and CUDA API support levels for the graphics card.
- Includes real-time OpenGL and Vulkan 3D demos and GPU stress tests.
- Can monitor NVIDIA GeForce and AMD Radeon GPUs, including temperature, load, and fan speed.
- Exports full system reports in text and XML format, useful for support purposes.
Cons
- Monitoring of GPU load and fan speed was documented as supported only for NVIDIA cards in earlier versions.
- The stress tests can push the GPU to high temperatures, so care is needed when running them.
Boris Weber
I am an editor at UpdateStar. I started as a support engineer, and am now specialized in writing about general software topics from a usability and performance angle among others. I telecommute from UpdateStar’s Berlin office, when I am not working remote as a digital nomad for UpdateStar. When I'm not analyzing the latest software updates, you can find me exploring new cities, immersing myself in local cultures, and discovering innovative tech trends across the globe.
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