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Sidebar Diagnostics 3.6.3 is a lightweight Windows utility designed to add a slim, always-visible panel to the desktop edge that continuously reports live hardware diagnostic data such as CPU load per core, RAM consumption, GPU temperature, fan speeds, storage activity and network throughput without overlapping work windows. Originally released in four successive versions, the open-source tool has evolved from a basic gadget into a fully customizable monitoring dashboard that gamers, over-clockers, system builders and IT support staff rely on to spot thermal throttling, memory leaks or failing drives before performance degrades or crashes occur. Users can dock the bar to any screen side, choose between horizontal or vertical layout, set custom color themes, decide which sensors appear, and configure warning thresholds that flash or change bar colors when values exceed safe limits; the panel can also be set to auto-hide or remain on top of full-screen applications. Because it reads data from Windows Performance Counters, LibreHardwareMonitor and GPU drivers, the program presents accurate real-time readings with negligible CPU overhead, making it suitable for recording benchmarks, streaming sessions, or running production servers. The software belongs to the Hardware Monitoring category and is maintained by its original developer under the same name. Sidebar Diagnostics is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, ensuring the latest version is always fetched and supporting batch installation alongside other applications.
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