NWinfo

Hardware information utility for Windows

---

Project maintained by a1ive Hosted on GitHub Pages — Theme by mattgraham

NWinfo

NWinfo is a Win32 program for collecting system and hardware information.

Features

• Retrieves detailed information about SMBIOS, CPUID, S.M.A.R.T., PCI, EDID, and more.
• Supports exporting in JSON, YAML, and HTML formats.
• Gathers information directly without relying on WMI.

Download

• Source code: https://github.com/a1ive/nwinfo
• Latest release: GitHub Releases
• Nightly build: Direct link
• Libraries: Direct link
• Github actions: GitHub Actions

GUI (gnwinfo)

OS Support

Windows 7 and later

Language Support

• English
• Chinese (Simplified)
• Chinese (Traditional)
• French
• German
• Greek
• Italian
• Japanese
• Korean
• Polish
• Portuguese (Brazil)
• Slovenian
• Spanish
• Swedish
• Turkish

Command-Line Options

• /debug
  Print debug information to stdout.

CLI (nwinfo)

OS Support

Windows XP and later

Usage

.\nwinfo.exe OPTIONS

Example Commands

.\nwinfo.exe --format=json --output=report.json --cp=UTF8 --sys --disk

Exports system and disk information to report.json in JSON format.

.\nwinfo.exe --pci=03

Prints information about all PCI devices in the class code 03 (Display Controllers).

.\nwinfo.exe --format=html --output=report.html --net=active,phys,ipv4

Exports active physical network interfaces with IPv4 addresses to report.html in HTML format.

General Options

• --format=FORMAT
  Specify output format.
  FORMAT can be YAML (default), JSON, LUA, TREE, or HTML.
• --output=FILE
  Write to FILE instead of printing to the screen.
• --cp=CODEPAGE
  Set the code page of output text.
  CODEPAGE can be ANSI or UTF8.
• --human
  Display numbers in a human-readable format.
• --temp-unit=UNIT
  Specify the temperature unit.
  UNIT can be C (Celsius, default), F (Fahrenheit), or K (Kelvin).
• --bin=FORMAT
  Specify binary format.
  FORMAT can be NONE (default), BASE64, or HEX.
• --debug
  Print debug information to stdout.
• --hide-sensitive
  Hide sensitive data (MAC & S/N).
• --driver=NAME
  Specify the driver name.
  Available drivers are CPUZ162, NwHwIo, and PawnIO.
  Use NONE to disable driver usage.
  By default, the program searches for and loads drivers in the order shown above. See Supported Drivers for details.

Hardware Details

• --cpu[=FILE]
  Print CPUID info.
  A driver is required to access sensors, such as temperature sensors.
  Intel, AMD, and VIA/Zhaoxin CPUs are supported.
  FILE specifies the filename of the CPUID dump.
• --net[=FLAG,...]
  Print network info.
  • GUID
    Specify the GUID of the network interface, e.g., {B16B00B5-CAFE-BEEF-DEAD-001453AD0529}.
  • FLAGS
ACTIVE Exclude inactive network interfaces.
    PHYS Exclude virtual network interfaces.
    ETH Include Ethernet network interfaces.
    WLAN Include IEEE 802.11 wireless addresses.
    IPV4 Show IPv4 addresses only.
    IPV6 Show IPv6 addresses only.
• --board
  Print mainboard info.
• --acpi[=SGN]
  Print ACPI info.
  A driver is required to access some ACPI tables.
  SGN specifies the ACPI table signature, e.g., FACP (Fixed ACPI Description Table).
• --smbios[=TYPE,...]
  Print SMBIOS info.
  TYPE specifies the SMBIOS structure types, e.g., 2 or 2,4,17.
• --disk[=FLAG,..]
  Print disk info.
  • PATH
    Specify the disk path, e.g., \\.\PhysicalDrive0 or \\.\CdRom0.
  • FLAGS
NO-SMART Do not print disk S.M.A.R.T. info.
    NO-VOL Do not print volume info.
    PHYS Exclude virtual drives.
    CD Include CD-ROM devices.
    HD Include hard drives.
    NVME Include NVMe devices.
    SATA Include SATA devices.
    SCSI Include SCSI devices.
    SAS Include SAS devices.
    USB Include USB devices.
• --smart=FLAG,...
  Specify S.M.A.R.T. features.
  Features enabled by default:
  WMI, ADATA, HIDENOSMART, ATA, SAT, SUNPLUS, IODATA, LOGITEC,
  PROLIFIC, USBJMICRON, CYPRESS, JMICRON, ASMEDIA, REALTEK,
  MEGARAID, VROC, HIDERAID, and CSMIAUTO.
  Use DEFAULT to specify the above features.
  Other features are ADVANCED, HD204UI, MEMORY, RTK9220DP,
  ASM1352R, AMDRC2, NOCSMI, and CSMIRAID.
• --display[=FILE]
  Print EDID info.
  FILE specifies the filename of the EDID dump.
• --pci[=CLASS,..]
  Print PCI info.
  CLASS specifies PCI device class codes, e.g., 0c05 or 03,0c05.
• --spd[=FILE]
  Print DIMM SPD info.
  A driver is required to access SPD data.
  :warning: This option may damage the hardware.
  FILE specifies the filename of the SPD dump.
• --usb
  Print USB info.
• --battery
  Print battery info.
• --uefi[=FLAG,..]
  Print UEFI info.
  • FLAGS
MENU Print UEFI boot menus.
    VARS List all UEFI variables.
• --audio
  Print audio devices.
• --gpu
  Print GPU utilization and sensors (e.g. temperature).
  GPU drivers are required to access this information.
  NVIDIA (NVAPI), AMD (ADL2), and Intel (IGCL) are supported.
• --device[=TYPE]
  Print device tree.
  TYPE specifies the device type, e.g., ACPI, SWD, PCI, or USB.
• --sensors[=SRC,..]
  Print sensor readings.
  SRC specifies the sensor provider.
  Available providers are:
  LHM, HWINFO, GPU-Z,
  CPU, DIMM, GPU, SMART, DISK, NET, IMC, INTEL, and ZEN.

System Information

• --sys
  Print system info.
• --shares
  Print mapped network drives and shared folders.
• --public-ip
  Print public IP address.
• --product-policy[=NAME]
  Print ProductPolicy.
  NAME specifies the product policy name.
• --font
  Print installed fonts.

PowerShell Script for System Diagnostics

hw_report.ps1 is a PowerShell script that generates and displays a detailed hardware and system report using nwinfo.

You might need to temporarily allow script execution by running the following command:

Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass

Supported Hardware

CPU

Vendor	CPUID	Temperature	Voltage	Power	Clock
Intel	✅	✅	✅	✅	✅
AMD	✅	✅	✅	✅	✅
VIA / Zhaoxin	✅	✅	❌	❌	❌

GPU / NPU

Vendor	API	GPU Usage	VRAM	Temperature	Power	Frequency	Voltage	Fan Speed
NVIDIA	NVAPI	✅	✅	✅	✅	✅	✅	✅
AMD	ADL2	✅	✅	✅	✅	✅	✅	✅
Intel	IGCL	✅	✅	✅	✅	✅	✅	✅
Generic NPU	DXCore	✅	✅	❌	❌	❌	❌	❌
Generic GPU	D3D	✅	✅	✅	✅	❌	❌	⚠️

Notes:

• VRAM refers to the dedicated video memory only.
• Frequency refers to the GPU core frequency.
• Power refers to the board power draw.

Memory Module SPD / IMC

• SMBus: Intel PCH, PIIX4 / AMD SB / Hygon
• Memory Module: SDR, DDR, DDR2, DDR3, DDR4, DDR5
• Thermal Sensor: DDR4, DDR5
• IMC: Intel Core 2nd Gen and later / AMD Zen and later

HDD / SSD S.M.A.R.T.

NWinfo uses libcdi to access S.M.A.R.T. data.

libcdi is a dynamic library based on CrystalDiskInfo.

Note: NVMe requires Windows 10 or later.

Supported Drivers

The program searches for and loads drivers in the following order: CPUZ162 -> NwHwIo -> PawnIO.

Driver	Bundled	CPU Sensor	SPD	IMC
PawnIO	✅Full	✅	✅	✅
NwHwIo	✅Lite	✅	✅	✅
CPUZ162	❌	✅	✅	✅

Note: The program can still run normally without a driver, but some hardware information may not be accessible.

PawnIO Driver Installation

PawnIO driver requires Windows (x64) 10 1809 or later.

Install the PawnIO driver silently using the following command:

.\PawnIOSetup.exe -install -silent

Uninstall the PawnIO driver silently using the following command:

.\PawnIOSetup.exe -uninstall -silent

Delete the PawnIO driver from the Windows DriverStore:

REM Find the <OEMXXX.inf> name of the PawnIO driver
pnputil /enum-drivers
REM Delete the driver (replace oemXXX.inf with the name identified in the previous step)
pnputil /delete-driver <oemXXX.inf> /uninstall

File List

This section describes all files included in the final release package.

File Name	Category	Description
nwinfo.exe	Executable	Main executable (x64)
nwinfox86.exe	Executable	Main executable (x86)
gnwinfo.exe	Executable	GUI executable (x64)
gnwinfox86.exe	Executable	GUI executable (x86)
libcdi.dll	Library	S.M.A.R.T. data access library (x64)
libcdix86.dll	Library	S.M.A.R.T. data access library (x86)
hw_report.ps1	Script	Example PowerShell script
gnwinfo.ini	Configuration	Configuration file for the GUI
pci.ids	Database	PCI database
usb.ids	Database	USB database
pnp.ids	Database	PnP (monitor) vendor database
jep106.ids	Database	JEDEC memory module vendor database
PawnIOSetup.exe	Driver	PawnIO driver installer (x64)
IntelMCHBAR.bin	PawnIO Module	Intel MCHBAR module for the PawnIO driver
IntelMSR.bin	PawnIO Module	Intel MSR module for the PawnIO driver
AMDFamily0F.bin	PawnIO Module	AMD K8 MSR module for the PawnIO driver
AMDFamily10.bin	PawnIO Module	AMD K10 MSR module for the PawnIO driver
AMDFamily17.bin	PawnIO Module	AMD Zen MSR module for the PawnIO driver
RyzenSMU.bin	PawnIO Module	AMD Ryzen SMU module for the PawnIO driver
SmbusPIIX4.bin	PawnIO Module	PIIX4 SMBus module for the PawnIO driver
SmbusI801.bin	PawnIO Module	I801 SMBus module for the PawnIO driver
LpcIO.bin	PawnIO Module	LPC I/O module for the PawnIO driver

Licenses & Credits

This project is licensed under the Unlicense license.

• libcpuid
• CrystalDiskInfo
• Nuklear
• stb
• optparse
• hwdata
• PawnIO