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NWinfo

Ask DeepWiki

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

GUI (gnwinfo)

OS Support

Windows 7 and later

Language Support

  • English
  • Chinese (Simplified)
  • Chinese (Traditional)
  • French
  • German
  • Greek
  • Italian
  • Japanese
  • Korean
  • Polish
  • Portuguese (Brazil)
  • Russian
  • 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.
    ⚠️ 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
      CERT Parse UEFI Secure Boot signature databases.
      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.
  • --hid Print Human Interface Devices (HID) info.
  • --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.
  • --drv-store[=OFFLINE_PATH] Print Windows driver store info. OFFLINE_PATH specifies the path of the offline system, e.g., D:\ or E:\\Backup.

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 Sensor Providers

The --sensors[=SRC,..] option reads sensor data from the following providers. If SRC is omitted, NWinfo tries all providers and prints the ones that initialize successfully.

Provider Source Notes
LHM LibreHardwareMonitor Uses liblhm.dll and LibreHardwareMonitorLib.dll to enumerate LibreHardwareMonitor sensors.
HWINFO HWiNFO shared memory Requires HWiNFO to be running with sensor shared memory available.
GPU-Z GPU-Z shared memory Requires GPU-Z to be running.
CPU Built-in CPU provider Reports CPU utilization, frequency, and MSR-based CPU readings. A driver is required for MSR sensors.
DIMM Built-in memory provider Reports memory usage and DIMM thermal sensors when available. A driver is required for SMBus thermal sensors.
GPU Built-in GPU provider Reports GPU utilization, memory usage, temperature, power, clocks, voltage, and fan speed through supported GPU APIs.
SMART Built-in S.M.A.R.T. provider Reports disk health, temperature, lifetime/wear, and related S.M.A.R.T. data through libcdi.
DISK Built-in disk I/O provider Reports disk throughput, IOPS, latency, utilization, queue depth, and counters.
NET Built-in network provider Reports network throughput, total traffic, link speed, and WLAN signal quality.
IMC Built-in memory controller provider Reports integrated memory controller data for supported Intel and AMD platforms. A driver is required.
INTEL Built-in Intel platform provider Reports Intel-specific MCH, PCH, and MSR sensor data. A driver is required.
ZEN Built-in AMD Zen provider Reports AMD Zen SMU/SMN sensor data. A driver is required.

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
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
IntelPCHThermal.bin PawnIO Module Intel PCH Thermal 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
ZhaoxinMSR.bin PawnIO Module Zhaoxin MSR module for the PawnIO driver

Licenses & Credits

This project is licensed under the Unlicense license.