Windows: Press `Win + R`, type `msinfo32`, press `Enter`
Windows: Press `Ctrl + Shift + Esc`, open **Task Manager**, go to **Performance** tab
Windows: Open **Settings** → **System** → **About** (basic device specs)
Windows: Open **Settings** → **System** → **Display** → **Advanced display** (monitor/display info)
Windows: Open **Device Manager** (`Win + X` → **Device Manager**) for CPU/GPU/RAM and drivers
Windows: Press `Win + R`, type `dxdiag`, press `Enter` (DirectX and display/system info)
Windows: Press `Win + R`, type `powercfg.cpl`, press `Enter` (power/processor info varies by system)
macOS: Click **Apple menu** → **About This Mac** (model, processor, memory, graphics)
macOS: Open **System Settings** → **General** → **About** (hardware overview)
macOS: Click **Apple menu** → **System Settings** → **Displays** (display specs)
macOS: Open **Terminal** and run `system_profiler` (full hardware details)
Linux: Open **Terminal** and run `lscpu` (CPU)
Linux: Run `free -h` (RAM)
Linux: Run `lsblk` (storage)
Linux: Run `lspci -v | less` (PCI devices, including GPU)
Linux: Run `lshw -short` (summary hardware)
Linux: Run `inxi -Fxz` (if installed) for quick system report
Use benchmark/spec tools: CPU-Z (CPU/RAM), GPU-Z (GPU), Speccy (Windows), HWiNFO (Windows/Linux)
For full build details: check motherboard model in **Device Manager** (Windows) or `lshw`/`dmidecode` (Linux)
Check installed RAM type/speed (Windows): use Task Manager **Performance** → **Memory** (where available) or Speccy/HWiNFO
Check GPU model/VRAM: Windows **Task Manager** → **Performance** → **GPU**; macOS **About This Mac**; Linux `lspci`/`lshw`/`inxi`