What is hwinfo64a sys

Last updated: April 1, 2026

Quick Answer: HWINFO64A.sys is a Windows kernel-level driver used by HWiNFO64, a hardware monitoring utility that displays detailed information about computer components, temperatures, voltages, and system performance.

Key Facts

What is HWINFO64A.sys?

HWINFO64A.sys is a Windows kernel-mode device driver file that belongs to HWiNFO64, a popular hardware information and monitoring utility for computers running 64-bit Windows. The driver enables the application to access low-level hardware information and sensor data that would otherwise be unavailable to standard user-mode applications. The .sys extension indicates it's a system driver that runs with elevated kernel privileges.

Purpose and Functionality

The primary purpose of HWINFO64A.sys is to provide HWiNFO64 with direct access to your computer's hardware components and sensors. This includes real-time monitoring of CPU and GPU temperatures, voltage readings, fan speeds, hard drive health status, motherboard sensor data, and various performance metrics. By running at kernel level, the driver can read data from hardware sensors and system interfaces that are not accessible to regular applications running in user mode.

HWiNFO64 Application

HWiNFO64 is a comprehensive system information utility that displays detailed hardware specifications and real-time monitoring data. It shows processor details, RAM information, storage device specifications, BIOS information, and a vast array of sensor readings. The application is widely used by enthusiasts, system administrators, and overclockers who need detailed insight into their computer's hardware configuration and performance. HWiNFO64 is available as both portable and installer versions.

Technical Details

The driver file typically has a size of around 200-300 KB and is located in the Windows System32 drivers directory. It is digitally signed by Microsoft, indicating it has passed Windows driver certification. When HWiNFO64 is running, the driver loads automatically. The driver communicates with hardware sensors through standard Windows driver interfaces and the Windows Management Instrumentation (WMI) system, allowing safe and standardized access to hardware data.

Security and Safety

HWINFO64A.sys is a legitimate system driver from a trusted source and poses no security risk when downloaded from official channels. It is commonly used by system administrators, hardware enthusiasts, and support professionals. The driver does not modify system files, does not access the internet, and does not collect personal information. However, like any kernel-level driver, it should only be obtained from official sources to ensure authenticity and security.

Related Questions

Is HWINFO64A.sys safe?

Yes, HWINFO64A.sys is a safe, legitimate driver from HWiNFO64 by Martin Malik. It is digitally signed by Microsoft and widely used by system administrators and hardware enthusiasts. Only download it from the official HWiNFO website to ensure authenticity.

Why does HWiNFO64 need a kernel driver?

The kernel driver allows HWiNFO64 to access low-level hardware sensors and system interfaces that provide real-time temperature, voltage, and performance data. User-mode applications cannot directly access this sensitive hardware data without kernel-level privileges.

What can I monitor with HWINFO64?

HWINFO64 monitors CPU and GPU temperatures, voltages, fan speeds, hard drive health (S.M.A.R.T data), power consumption, processor load, memory usage, and many other hardware-specific parameters depending on your system's sensors.

Sources

  1. Wikipedia - Hardware Monitoring CC-BY-SA-4.0
  2. Wikipedia - System Software CC-BY-SA-4.0