You may have heard of CPU overclocking — the process of increasing the clock speed of a CPU (Central Processing Unit). Basically, it can squeeze more power out of your processor and boost the performance of your computer. That means you can have a more powerful CPU without paying extra money.
Sounds appealing! You may want to give it a try, but you may also consider it a very complicated job. And you would probably ask if it is possible to do this without advanced computer skills.
Don’t worry. It is possible, and it’s not as complicated as it used to be. Here is a detailed (and safe!) guide to CPU overclocking for even absolute beginners. Follow the steps through, and you will master the basic knowledge of overclocking your CPU.
What you’ll read in this post:
Should I overclock my CPU?
Before starting to overclock your CPU, there are two important questions to consider: why do you need to overclock the CPU, and can your CPU be overclocked?
Is CPU overclocking worth it?
CPU overclocking means running your processor at a higher frequency than its factory settings. A successful overclock can improve performance in:
- PC gaming (especially CPU-bound games)
- Video editing
- 3D rendering
- Code compilation
- Content creation
- Virtual machines
However, the actual improvement depends on your CPU, motherboard, and cooling solution. Two identical processors may achieve different overclocking results.
Can my CPU be overclocked?
Not every processor supports manual overclocking. You’ll need to make sure the CPU is unlocked, and the motherboard supports overclocking.
Most modern AMD Ryzen desktop processors are unlocked, including the Ryzen 5000/7000/9000 series. And you’ll also need a B- or X-series motherboard. For Intel CPUs, multiplier overclocking requires K, KF, or KS processors (such as Core i5-14600K, Core i7-14700K, Core i9-14900K, Core Ultra 7 265K, etc) and a compatible Z-series motherboard (like Z690, Z790, Z890).
If you’re not sure about your CPU and motherboard model, here’s how to check it:
1) Press the Windows logo key + R at the same time to open the Run command box.
2) Type into msinfo32 and press Enter.
3) Check the Processor model, as well as the Baseboard Manufacturer, Baseboard Product, and Baseboard Version to see if they support overclocking.
If you are not sure whether your CPU and motherboard support overclocking, you can search the model numbers of your devices on the Internet or go to the official website of the manufacturers for more related information.
Is it safe to overclock my CPU?
In many cases, yes.
If you are using a laptop, it is not recommended that you overclock your CPU. Most laptop cooling systems aren’t designed to handle the additional heat generated by sustained overclocking.
For a desktop PC, there are still risks, though. The processor you use is not designed to run at a higher speed after all. Its temperature will go up, and its life will be shortened. If you don’t operate reasonably, you will instantly kill your CPU and even other components because of the high temperature or voltage.
Fortunately, these risks can usually be minimized if you keep the CPU temperatures under control or increase the settings gradually. While the life of your CPU will be shortened after overclocking, it will still have a longer lifespan than you can imagine.
What you’ll need before overclocking
Before you start to overclock your CPU, there are a few things you should get prepared.
1. Good CPU cooling
As what is said above, your CPU will generate more heat with the increased clock speed. You will need a good cooling system to control the temperature of your CPU. A heat sink may be enough if you raise the speed by, say, below or around 10%. If you want to go further up, you will need to watch the temperature carefully and, when necessary, use a more powerful cooling system, like a water cooling system.
2. A reliable power supply
An overclocked CPU can possibly use up the power supply of your computer. You should use a power supply unit that can supply enough and steady power to your computer in order for your CPU to run normally.
3. Monitoring software
You will need these tools to test the overclocking results as well as the processor stability and temperature. If your motherboard software contains these features, you can use it to test your CPU and check its temperature. You can also use some free tools, like CPU-Z (to monitor your CPU), Prime95 (to run stress tests), and Core Temp (to monitor the temperature).
4. Update your drivers
Before overclocking, make sure your motherboard chipset and other hardware drivers are up to date. While drivers won’t increase your CPU’s overclocking potential, outdated chipset drivers can occasionally cause stability or power management issues during stress testing. To update the drivers on your computer easily and quickly, we recommend using Driver Easy.
Driver Easy is a powerful driver updater that automatically recognizes your system and finds the correct drivers for it. You don’t need to know exactly what system your computer is running, you don’t need to risk downloading and installing the wrong driver, and you don’t need to worry about making a mistake when installing.
5. Update BIOS
Motherboard manufacturers frequently improve CPU compatibility, stability, and voltage management through the latest BIOS version. So before overclocking, a BIOS update is recommended.
6. Run a stress test
You need to run a stress test first to check the status of your CPU.
You can use Prime95 to run a stress test. To do so:
1) Open Prime95 and select Options. Then select Torture Test.
2) In the window popping up, select Blend and then hit OK.
3) Keep it running for about 10 minutes and monitor the temperature of your CPU at the same time. If the temperature reaches too high (over 70°C) or your computer crashes, your CPU cooler may not be powerful enough, or there may be issues with your hardware. You should get these issues fixed before you begin overclocking.
If you have done all the things above, you are good to go.
How to overclock your CPU
Now let’s begin to overclock your CPU.
1) Restart your computer and enter BIOS (Basic Input/Output System). (Please check this guide to learn how to enter BIOS.)
2) In BIOS, use the arrow key to locate the overclocking menu. It may have a different name and location depending on the computer model. If your computer boots into EZ Mode, press F7 on your keyboard to enter the advanced settings. Then look for:
Asus: Ai Tweaker/Extreme Tweaker > AI Overclock Tuner. Change it from Auto to Manual.
MSI: OC (Overclocking) tab on the left side of your screen.
Gigabyte: Tweaker/M.I.T. > Advanced CPU Settings.
ASRock: OC Tweaker > CPU Configuration.
3) For beginners, leave the Base Clock (BCLK, or FSB Frequency) at 100 MHz. Then increase the Multiplier (or CPU Clock Ratio) by 1 step at a time. Press the arrow keys to highlight each of these items and then press Enter to configure it.
Your CPU frequency equals Base Clock multiplied by Clock Ratio. Changing the clock ratio is much safer and less likely to affect memory or other system components. Every time you change a setting, save and exit BIOS, and restart Windows. Then run a stress test for around 10 minutes to check the temperature and stability of your computer.
Getting an error sometimes means you have reached the limit, and you should lower either the Base Clock or the Clock Ratio. But in other cases, this means your CPU is getting short of power supply, and you should increase the CPU voltage. Here’s how:
1) Enter BIOS and go to the overclocking menu. Press the arrow keys to highlight Advanced Voltage Settings and then press Enter to enter its settings.
2) Increase the CPU Core Voltage (or Vcore Voltage) in 0.025 increments. Leave BIOS and run a stress test after each change. If your computer is unstable, change it back to a safe setting.
After you finish overclocking and the stress tests, test your overclocked CPU by playing several demanding games for at least 30-60 minutes, rendering a video, or completing your normal workload. Make sure that there are no crashes, freezes, or unexpected restarts.
If the temperature is safe and your computer is normal, you can choose either to go on or to stop now.
If you want to overclock as high as possible within the stable limit, you can repeat the steps (increase clock ratio slightly > restart Windows > run stress test > monitor temperatures). Eventually, you’ll reach a point where the temperatures are out of control, the system becomes unstable, and additional voltage no longer helps. That’s your practical overclocking limit.
Common CPU overclocking problems
Here are some common issues you may encounter after overclocking your CPU, and also how to fix them.
PC crashes during the stress tests
Possible causes can be that the CPU ratio is too high, insufficient voltage, or high temperatures. You can try lowering the multiplier or improving cooling before increasing voltage.
High CPU temperatures
The most direct method is to clean dust, improve case airflow, or upgrade your cooling system.
Random blue screens
This is often triggered by an unstable overclock, incorrect voltage, and memory instability. Simply return to the last stable BIOS settings and test again.
The process of overclocking a CPU is accessible, as long as you take a gradual, methodical approach. Start with small multiplier increases, monitor temperatures closely, and verify stability after every adjustment. Avoid unnecessary voltage increases, and remember that every processor has its own limits.
In our testing and troubleshooting experience, the most reliable overclocks come from patience rather than aggressive settings. A stable CPU that runs a little slower is almost always better than an unstable one chasing the highest possible benchmark score.