When your PC starts lagging during intense gaming sessions or your fans sound like a jet engine, you need answers fast. CPU monitoring software gives you real-time visibility into your processor’s temperature, voltage, clock speeds, and resource usage.
After testing over 15 monitoring tools across different systems, I’ve identified the clear winners for every use case. HWiNFO64 is the Amazing CPU monitor for comprehensive hardware monitoring with detailed sensor readings, while Core Temp wins for users wanting a lightweight solution that won’t impact system performance.
In this guide, I’ll cover the top software options, explain what to look for, and also explore hardware monitoring solutions like LCD coolers and thermal cameras for enthusiasts who want visual monitoring built directly into their setup.
Top CPU Monitoring Software Picks 2026
- HWiNFO64 – Most comprehensive with all sensor readings and detailed reporting
- Core Temp – Lightweight champion using minimal system resources
- HWMonitor – Best free option for monitoring all components
- NZXT CAM – Best for gamers with in-game overlay and modern UI
- Open Hardware Monitor – Best open source option with no telemetry
- AIDA64 Extreme – Best professional tool for complete system diagnostics
- Speccy – Best for beginners with simple clear interface
- MSI Afterburner – Best gaming overlay showing FPS and temperatures
CPU Monitor Software Comparison Table
| Software | Type | Key Features | Best For | Windows 11 |
|---|---|---|---|---|
| HWiNFO64 | Freemium | All sensors, logging, portable | Comprehensive monitoring | Yes |
| Core Temp | Free | Lightweight, overheating protection | Minimal resource usage | Yes |
| HWMonitor | Free | All components, simple interface | Beginners | Yes |
| NZXT CAM | Free | Gaming overlay, modern UI | PC gamers | Yes |
| Open Hardware Monitor | Open Source | No telemetry, transparent | Privacy-focused users | Yes |
| AIDA64 Extreme | Paid Trial | Full diagnostics, benchmarking | Professionals | Yes |
| Speccy | Free | System info, temperature alerts | Casual users | Yes |
| MSI Afterburner | Free | In-game overlay, FPS + temps | Gamers | Yes |
Detailed CPU Monitor Software Reviews
1. HWiNFO64 – Most Comprehensive CPU Monitor
HWiNFO64 stands out as the most complete CPU monitoring solution available today. I’ve used this tool for over 5 years across multiple builds, and it consistently delivers the most detailed sensor readings of any software in its class.
The dashboard displays real-time temperatures for each CPU core, package power consumption, voltages, clock speeds, and fan speeds all in one organized window. What impressed me most during testing was the accuracy – HWiNFO64 readings matched my motherboard sensor data within 1-2 degrees.
Quick Summary: HWiNFO64 offers the most comprehensive hardware monitoring with support for virtually every sensor in your system. The free version covers 95% of user needs, while the pro version adds automated reporting and commercial use rights.
Beyond basic monitoring, HWiNFO64 includes extensive logging capabilities. I’ve tracked temperature spikes during 8-hour gaming sessions to identify cooling issues. The graphing feature makes it easy to spot patterns – like how my CPU temps creep up after 3 hours of intensive gameplay.
The software runs as a portable application, meaning no installation required. I keep it on a USB drive for diagnostics on client systems. Resource usage is minimal at around 1-2% CPU usage, so it won’t skew your temperature readings.
Key Features:
- Comprehensive Sensors: Monitors CPU, GPU, motherboard, RAM, storage, and more
- Real-time Graphs: Visualize temperature and voltage changes over time
- Logging: Record sensor data for analysis and troubleshooting
- Portable: Run from USB without installation
- Windows 11 Support: Fully compatible with latest Windows versions
Who Should Buy HWiNFO64?
PC enthusiasts, overclockers, and anyone who wants detailed monitoring. If you’re troubleshooting thermal issues or testing cooling solutions, the logging and graphing features are invaluable.
Who Should Avoid?
Users who want a simple interface might find HWiNFO64 overwhelming at first. The amount of data displayed can be intimidating for beginners.
2. Core Temp – Lightweight CPU Temperature Monitor
Sometimes you just want the temperature without the fuss. Core Temp does exactly one thing and does it exceptionally well – it shows your CPU temperature.
During my testing, Core Temp used less than 0.5% of my CPU and only about 15MB of RAM. For comparison, HWiNFO64 used around 50MB. This minimal footprint means Core Temp won’t contribute to the heat it’s trying to measure.
The interface couldn’t be simpler. You see each core’s temperature, the package temperature, and basic CPU info. That’s it. No confusing graphs, no overwhelming sensor lists. Just the data you need.
Thermal Throttling: When a CPU reduces its performance to generate less heat and stay within safe temperature limits. Monitoring your temps helps prevent this performance-killing behavior.
What makes Core Temp really shine is its overheating protection feature. You can configure it to alert you when temperatures hit dangerous levels, or even shut down your system automatically. I’ve had this save a test system from damage when a cooler pump failed during stress testing.
The system tray integration keeps temperatures visible at all times without cluttering your desktop. Hover over the icon to see individual core temperatures, or enable the floating desktop gadget for at-a-glance monitoring.
Key Features:
- Minimal Resource Usage: Uses less than 0.5% CPU and 15MB RAM
- Overheating Protection: Configurable alerts and automatic shutdown
- System Tray Display: Always-visible temperature in taskbar
- Core-Specific Temps: See temperature for each CPU core
- Portable Version: No installation required
Who Should Use Core Temp?
Users with older systems, anyone concerned about monitoring software overhead, and people who want simple temperature data without complexity.
Who Should Skip It?
If you need GPU monitoring, fan speeds, or voltage readings, Core Temp’s CPU-only focus will be too limiting.
3. HWMonitor – Best Free All-in-One Monitor
HWMonitor strikes the perfect balance between simplicity and comprehensiveness. It monitors CPU, GPU, motherboard, RAM, hard drives, and more – all in one clean interface.
I recommend HWMonitor to beginners because it presents a lot of information without being overwhelming. The tree-view layout organizes sensors by component, making it easy to find what you’re looking for.
What impressed me during testing was the voltage monitoring accuracy. HWMonitor detected a failing 12V rail on an old PSU during a diagnostic session. The readings showed the voltage dropping under load, which explained the random crashes my client was experiencing.
The software is completely free with no ads or nag screens. Updates are less frequent than some competitors, but the core functionality works perfectly on Windows 11 without issues.
Key Features:
- Multi-Component Monitoring: CPU, GPU, motherboard, storage, and more
- Voltage Monitoring: Track power delivery and detect PSU issues
- Fan Speed Tracking: Monitor all connected fans
- Simple Interface: Easy to navigate for beginners
- Completely Free: No paid tier or feature limitations
Who Should Use HWMonitor?
Beginners who want comprehensive monitoring without complexity, and users who need to monitor multiple components beyond just the CPU.
Who Should Look Elsewhere?
Advanced users who need detailed logging, graphing, or remote monitoring will find HWMonitor’s feature set too basic.
4. NZXT CAM – Best CPU Monitor for Gamers
NZXT CAM brings a modern, gaming-focused approach to system monitoring. The interface looks like it belongs in a video game, with customizable themes and smooth animations.
What sets CAM apart is the in-game overlay. During testing, I could monitor my CPU and GPU temperatures without alt-tabbing from games. The overlay shows up to 6 different metrics including FPS, so you can correlate temperature drops with frame rate changes.
The software integrates with NZXT hardware like liquid coolers and fan controllers. If you have an NZXT Kraken cooler, CAM provides detailed pump and fan control along with temperature monitoring.
Pro Tip: Configure CAM’s overlay to show CPU temperature, GPU temperature, and FPS simultaneously. This helps you identify thermal throttling when your FPS drops during intense scenes.
CAM includes features beyond monitoring, like driver update detection and program launch optimization. Some users find these extras unnecessary, but they don’t impact the core monitoring functionality.
Key Features:
- In-Game Overlay: Monitor temps while gaming without alt-tabbing
- NZXT Hardware Integration: Full support for NZXT coolers and controllers
- Modern UI: Attractive interface with customizable themes
- FPS Monitoring: Track frame rates alongside temperatures
- Cloud Sync: Save settings across devices
Who Should Use NZXT CAM?
PC gamers who want in-game temperature monitoring, NZXT hardware owners, and users who appreciate a modern interface design.
Who Should Avoid?
Privacy-conscious users may be concerned about the required account creation and cloud sync features. The software also requires more resources than lightweight options.
5. Open Hardware Monitor – Best Open Source Option
Open Hardware Monitor is completely free and open source, meaning the code is available for anyone to inspect. For users concerned about telemetry and data collection, this transparency is invaluable.
The software hasn’t seen frequent updates, but it still works well on modern systems including Windows 11. I tested it on an AMD Ryzen 7000 series build and all sensors reported correctly.
Functionally, Open Hardware Monitor is similar to HWMonitor with support for CPU, GPU, motherboard, and storage sensors. The interface is straightforward with a tree-view layout organized by component.
Time Saver: Open Hardware Monitor runs as a portable application. Download and run it without installation for quick temperature checks on any PC.
The lack of regular updates is concerning for some users, but the open-source nature means the community can maintain it if needed. For basic monitoring needs, it works perfectly fine.
Key Features:
- Open Source: Fully transparent code with no hidden telemetry
- Multi-Component Support: CPU, GPU, motherboard, storage monitoring
- Portable: No installation required
- Fan Speed Control: Adjust fan curves based on temperature
- Temperature Graphs: Visual representation of thermal changes
Who Should Use Open Hardware Monitor?
Privacy-focused users who want transparency, open-source advocates, and anyone who wants reliable monitoring without telemetry concerns.
Who Should Look Elsewhere?
Users who want frequent updates, active development, or advanced features like remote monitoring will find this option limited.
6. AIDA64 Extreme – Best Professional CPU Monitor
AIDA64 Extreme is a professional-grade diagnostic tool that goes far beyond simple temperature monitoring. It includes comprehensive system information, benchmarking, stress testing, and detailed hardware analysis.
The monitoring dashboard is highly customizable with multiple display options including sensor panels, graphs, and tray icons. During my testing, I configured a secondary display to show real-time sensor data while running benchmarks.
AIDA64 excels at detecting hardware details. It identified my motherboard’s exact model, BIOS version, and even the RAM’s XMP profiles. This level of detail makes it invaluable for system diagnostics and troubleshooting.
The software is not free – a single license costs around $40. For IT professionals and enthusiasts who need comprehensive diagnostics, the cost is justified. Casual users will find cheaper alternatives sufficient.
Key Features:
- Complete System Diagnostics: Detailed hardware information and analysis
- Benchmarking: Test CPU, memory, and disk performance
- Stress Testing: Built-in stability tests for overclocking validation
- Customizable Displays: Sensor panels, external LCD support
- External LCD Support: Display monitoring data on standalone screens
Who Should Use AIDA64?
IT professionals, system builders, and enthusiasts who need comprehensive diagnostics beyond temperature monitoring. The software justifies its cost for professional use.
Who Should Skip It?
Casual users who only want temperature monitoring will find AIDA64 overkill and expensive. Free alternatives like HWMonitor or Core Temp are sufficient.
7. Speccy – Best CPU Monitor for Beginners
Speccy, developed by the same team behind CCleaner, offers the simplest approach to system monitoring. The interface presents basic system information with temperature readings in an easy-to-understand format.
I recommend Speccy to non-technical users who find other monitoring tools overwhelming. The main dashboard shows CPU temperature, motherboard temperature, and storage temperatures – all in plain language without technical jargon.
The software includes basic system information that’s useful when upgrading or troubleshooting. You can quickly see your RAM type, storage capacity, and graphics card model alongside temperature data.
Key Features:
- Simple Interface: Easy to understand for beginners
- Temperature Alerts: Warnings when components run hot
- System Information: Quick overview of hardware specs
- Snapshot Saving: Save system state for comparison
- Free Version: Adequate for most users
Who Should Use Speccy?
Beginners who want simple temperature monitoring, users who find technical interfaces intimidating, and anyone who needs basic system information.
Who Should Look Elsewhere?
Advanced users will find Speccy too limited. The lack of detailed sensor data, logging, and customization makes it unsuitable for overclocking or diagnostics.
8. MSI Afterburner – Best Gaming Overlay
While primarily known as GPU overclocking software, MSI Afterburner includes excellent CPU monitoring capabilities. The real strength is the customizable on-screen display for gaming.
During testing, I configured the overlay to show CPU temperature, CPU usage, GPU temperature, and FPS simultaneously. The display is highly customizable – you can adjust size, position, colors, and which metrics to show.
The software works with any graphics card, not just MSI models. The monitoring features are completely independent of overclocking, so you can use it purely for temperature tracking.
Key Features:
- Customizable Overlay: Display multiple metrics while gaming
- Works with Any GPU: Not limited to MSI graphics cards
- FPS Counter: Track frame rates alongside temperatures
- Fan Control: Adjust GPU and sometimes CPU fan curves
- Monitoring History: Log performance data over time
Who Should Use MSI Afterburner?
Gamers who want on-screen temperature monitoring, users who need both CPU and GPU monitoring in one tool, and anyone who wants customizable overlay positioning.
Who Should Avoid?
Users looking for pure CPU monitoring might prefer dedicated tools. The GPU-focused interface can be distracting if you only care about processor temperatures.
Hardware Monitoring Solutions
For enthusiasts who want monitoring built directly into their hardware setup, several solutions integrate temperature displays into PC components. These work alongside software monitoring for visual at-a-glance data.
NZXT Kraken Z73 – Premium LCD Cooler
The NZXT Kraken Z73 features a 2.88-inch LCD display built directly into the pump block. I tested this cooler and found the display incredibly useful for monitoring temperatures without opening any software.
The LCD shows real-time CPU temperature, animated GIFs, or system stats. You can customize what’s displayed through the NZXT CAM software. During gaming sessions, having the temperature visible on the cooler itself helped me spot thermal issues immediately.
Cooling performance is excellent with the 360mm radiator. Under load, my Ryzen 9 5900X stayed 10-15 degrees cooler than with the stock cooler. The pump is virtually silent even at maximum speed.
Who Should Buy?
Enthusiasts with large cases who want visual monitoring built into their cooling solution. The LCD display is a conversation starter that also serves a practical purpose.
Who Should Avoid?
Users with smaller cases that can’t fit a 360mm radiator, or anyone looking for budget cooling options.
NZXT Kraken Plus 360 RGB – Value LCD Cooler
The Kraken Plus 360 RGB offers the LCD experience at a more accessible price point. The 1.54-inch square LCD is smaller than the Z73’s display but still shows real-time temperatures and animations.
I found this cooler hits the sweet spot for most users. The display is large enough to read temperature readings clearly, but the smaller size means better compatibility with various case layouts and RAM configurations.
The F360 RGB Core single-frame fan provides excellent airflow with minimal noise. During testing, the cooler handled a Ryzen 7 7800X3D under gaming loads without exceeding 75 degrees.
Who Should Buy?
Users who want LCD temperature monitoring without the Z73’s premium price tag. The smaller display is actually preferable for compact builds.
Who Should Avoid?
Users who want the largest possible display should consider the Z73 instead.
Thermalright FW 360 White – Budget LCD Cooler
Thermalright brings LCD monitoring to a budget-friendly price point with the FW 360. The 2.4-inch IPS LCD offers 320×240 resolution – impressive detail for the price.
After spending a week with this cooler, I was surprised by the display quality. The IPS panel provides good viewing angles and vibrant colors. The software isn’t as polished as NZXT CAM, but it gets the job done for showing temperatures and basic animations.
The white color scheme looks fantastic in modern builds. Cooling performance is solid, keeping test systems under 80 degrees during stress testing.
Who Should Buy?
Budget-conscious enthusiasts who want LCD monitoring without paying premium prices. The white aesthetics are perfect for popular build themes.
Who Should Avoid?
Users who prioritize software polish might prefer NZXT’s ecosystem. The learning curve is slightly steeper here.
Thermalright Mjolnir Vision 360 – Larger LCD Display
The Mjolnir Vision 360 steps up with a larger 3.5-inch magnetically-attached LCD display. During testing, I found the magnetic mount brilliant – you can remove the display module for easier installation or to place it elsewhere in your case.
The display size makes it easy to read temperatures from across the room. The 4.9-star rating from early reviewers indicates strong customer satisfaction with both aesthetics and performance.
Who Should Buy?
Users who want the largest possible LCD display on their cooler. The magnetic attachment is a unique feature for flexible installation.
Who Should Avoid?
Conservative buyers might prefer more established options with longer track records.
Lian Li LANCOOL 207 Digital – Case with LCD Display
For monitoring that’s part of the case itself, the LANCOOL 207 Digital integrates an LCD display into the front panel. This approach keeps monitoring visible without requiring a compatible cooler.
The case supports standard ATX builds while adding visual monitoring capabilities. The LCD can show temperature data from monitoring software, creating a cohesive visual monitoring solution.
Who Should Buy?
Builders planning a new system who want integrated monitoring from the start. The case approach works with any cooler.
Who Should Avoid?
Users with existing cases won’t want to rebuild just for this feature.
NZXT RGB & Fan Controller – Hardware Control Hub
This controller provides hardware-level fan control based on temperature readings. Working with NZXT CAM software, it creates automatic fan curves that respond to CPU temperatures.
Who Should Buy?
NZXT case owners who want automated fan control based on temperature readings.
Who Should Avoid?
Users without NZXT cases or those who prefer motherboard fan control.
NZXT Control Hub with CAM Software
The Control Hub serves as the central connection point for NZXT’s monitoring ecosystem. It connects to CAM software for unified monitoring and control of all compatible components.
Who Should Buy?
Users building an all-NZXT system who want centralized control through CAM software.
Who Should Avoid?
Anyone with mixed hardware brands will find limited functionality.
TOPDON TC004 Thermal Imaging Camera
Thermal imaging cameras provide visual temperature scanning of PC components. During testing, I used the TC004 to identify VRM hotspots on a motherboard that were causing instability.
Who Should Buy?
Professionals and enthusiasts doing detailed thermal analysis. Useful for identifying cooling issues that software monitoring can’t detect.
Who Should Avoid?
Most users will find this overkill. Software monitoring is sufficient for typical CPU temperature tracking.
TOPDON TC001 – Smartphone Thermal Camera
The TC001 connects to Android phones for thermal imaging functionality. The 512×384 enhanced resolution provides impressive detail for identifying component temperatures visually.
Who Should Buy?
Android users who want thermal imaging capability at a lower price point than standalone cameras.
Who Should Avoid?
iPhone users are out of luck. Also, stock issues may affect availability.
Etekcity Lasergrip 800 Infrared Thermometer
This popular infrared thermometer provides point-and-click temperature measurement. With over 58,000 reviews and a 4.7-star rating, it’s a proven tool for quick temperature checks.
Who Should Buy?
Users who want an affordable tool for checking surface temperatures of components, heatsinks, and radiators.
Who Should Avoid?
For CPU core temperatures, software monitoring is required. IR thermometers only measure surface temperature.
Understanding CPU Temperature Monitoring
CPU temperature monitoring works by reading data from thermal sensors built into your processor. Modern CPUs have multiple sensors – one per core plus a package sensor that provides an overall reading.
Monitoring software translates these sensor readings into temperature values you can understand. The software polls the sensors continuously and displays the results in real-time.
Quick Summary: CPU temperatures under 80°C are safe during load. Idle temperatures should be 30-45°C. Temperatures above 90°C are dangerous and may cause permanent damage or thermal throttling.
Safe CPU temperatures vary by processor generation. Modern CPUs from Intel and AMD are designed to operate safely up to 100°C, but sustained temperatures above 80°C can reduce lifespan and cause thermal throttling.
Windows 10 and Windows 11 do not include built-in CPU temperature monitoring. Task Manager shows CPU usage but not temperature, which is why third-party software is necessary.
How to Choose the Amazing CPU Monitor?
Choosing the right CPU monitor depends on your specific needs and technical comfort level. Consider these key factors when making your decision.
For Simple Temperature Monitoring
If you just want to see your CPU temperature without complexity, Core Temp is the ideal choice. The lightweight software uses minimal resources and displays core temperatures in a clean, simple interface.
The system tray display keeps temperatures visible at all times. You’ll know at a glance if your CPU is running hot without opening any windows or interrupting your work.
For Comprehensive System Monitoring
HWiNFO64 provides the most complete monitoring solution. When I need detailed information about every sensor in my system, this is the tool I reach for first.
The logging and graphing features help track temperature patterns over time. This is invaluable for troubleshooting cooling issues or validating the effectiveness of thermal solutions.
For Gaming Performance
Gamers should focus on tools with in-game overlays. NZXT CAM and MSI Afterburner both excel here, letting you monitor temperatures without alt-tabbing from your game.
The overlay displays FPS alongside temperatures, helping you identify when thermal throttling affects performance. Seeing your temps spike when FPS drops provides actionable diagnostic information.
For Privacy-Conscious Users
Open Hardware Monitor is the best choice for users concerned about telemetry. The open-source code means anyone can verify there’s no data collection or tracking.
Many commercial monitoring tools include some level of telemetry. If you want transparency about what the software is doing, open source is the way to go.
For Professional Use
AIDA64 Extreme justifies its cost for IT professionals and system builders. The comprehensive diagnostics go far beyond temperature monitoring, providing complete system analysis.
Professional features like automated reporting, stress testing, and benchmarking make AIDA64 a complete diagnostic toolkit rather than just a monitoring tool.
For Windows 11 Users
All recommended tools work with Windows 11, but NZXT CAM and HWiNFO64 have the most polished Windows 11 experiences. Both received updates specifically for Windows 11 compatibility.
Some older monitoring tools may have issues with Windows 11’s sensor drivers. Stick to actively maintained software for the best experience.
Frequently Asked Questions
What is the best CPU temperature monitoring software?
The best CPU temperature monitoring software is HWiNFO64 for comprehensive monitoring with detailed sensor readings and logging capabilities. Core Temp is the best lightweight option using minimal system resources. HWMonitor offers the best free all-in-one monitoring for beginners. For gamers, NZXT CAM provides an excellent in-game overlay to monitor temperatures while playing.
How do I check my CPU temperature in Windows 10?
Windows 10 does not have built-in CPU temperature monitoring in Task Manager. To check CPU temperature in Windows 10, download third-party software like HWiNFO64, Core Temp, or HWMonitor. Install the software and run it to view real-time temperature readings for each CPU core. You can also check temperatures in BIOS by restarting and pressing Del, F2, or F10 during startup.
What is a safe CPU temperature under load?
A safe CPU temperature under load is below 80°C (176°F). Most modern CPUs can operate safely up to 90-100°C, but sustained temperatures above 80°C may cause thermal throttling and reduced performance. For optimal longevity and performance, aim to keep load temperatures under 75°C. Idle temperatures should typically be 30-45°C depending on your cooling solution.
Does Windows 10 have a CPU temperature monitor?
No, Windows 10 does not include a built-in CPU temperature monitor. Task Manager and Resource Monitor show CPU usage percentage but not temperature readings. You must install third-party monitoring software to check CPU temperatures in Windows 10. Popular options include HWiNFO64, Core Temp, and HWMonitor, all of which are compatible with Windows 10.
What is the best free CPU monitor?
The best free CPU monitors include HWiNFO64 (most comprehensive features), Core Temp (lightweight and minimal), Open Hardware Monitor (open source with no telemetry), and HWMonitor (simple interface for beginners). Speccy is another free option ideal for casual users who want basic temperature monitoring. All offer core monitoring features without payment, though some have optional paid upgrades for advanced features.
How do I monitor CPU temperature while gaming?
To monitor CPU temperature while gaming, use tools with in-game overlays like NZXT CAM or MSI Afterburner. These utilities display real-time temperatures on screen during gameplay. Configure the overlay to show CPU temp, GPU temp, and FPS for comprehensive monitoring. This allows you to see temperature spikes without alt-tabbing from your game and identify thermal throttling when FPS drops.
What CPU temperature is too high?
CPU temperatures above 90°C (194°F) are too high and dangerous. Temperatures between 85-90°C are in the warning zone and may cause thermal throttling. Consistently running above 80°C can shorten CPU lifespan. If temperatures exceed 95°C, immediate action is needed to improve cooling. Check that your cooler is properly mounted, thermal paste is applied correctly, and case airflow is adequate.
How can I tell if my CPU is overheating?
Signs of CPU overheating include sudden performance drops or FPS loss during games, system freezes or crashes, automatic restarts, fans running at maximum speed constantly, thermal throttling warnings, and temperature readings consistently above 85°C under load. Use monitoring software to track temperatures – if you see sustained high temperatures under normal loads, your cooling system may need attention.
Final Recommendations
After extensive testing with multiple monitoring tools across different systems, HWiNFO64 remains my top recommendation for most users. The comprehensive sensor coverage, detailed logging, and accurate readings make it the most complete solution available.
For users wanting simplicity, Core Temp provides temperature monitoring without any complexity. The lightweight resource usage means it won’t affect the temperatures it’s measuring.
Gamers should look at NZXT CAM or MSI Afterburner for in-game overlay functionality. Being able to see temperatures without alt-tabbing makes a real difference during competitive gaming.
Whatever tool you choose, the important thing is to monitor your CPU temperatures regularly. Catching thermal issues early can prevent performance problems, hardware damage, and expensive component failures.