How to Check if CPU is Overclocked? - PC Guide 101 (2024)

There are many ways to check if your CPU is overclocked or not. Some are intuitive and easy to follow, while others require technical know-how. The three popular practices to prevent the CPU is overclocked will be reviewed.

The first method is the easiest, where you use the built-in OS utilities like the task manager to check the running clock speed of your CPU. The second is to use third-party system utilities like CPU-Z to prevent the same, and the final method, a bit more technical, is to check through BIOS.

It should be noted, however, that overclocking is NOT something that happens to the CPU automatically. Overclocking is done by the user.

Also, CPUs do not come factory overclocked. So if you have just bought a new CPU and installed it yourself, it would NOT be overclocked by default.

Finally, also know that if you have been using a system for a long time and are worried that it has somehow become overclocked, then rest assured, that is impossible. As mentioned earlier, overclocking isn’t an automated process.

Understanding Base, Turbo, and Overclock Frequencies

There are essentially three measures of clock speed that you should know before checking if your CPU is overclocked or not

1. Base Frequency (Manufacturer Specified)

The base frequency is the clock speed at which the CPU usually operates. This is the CPU’s frequency when not under stress, in an idle state, and performing lighter workloads.

The manufacturer specifies the base frequency.

2. Turbo Frequency (Manufacturer Specified)

This is the maximum speed that a processor can achieve. The CPU pushes itself to Turbo Frequency, mainly when performing heavier workloads.

While most mainstream CPUs have a Turbo frequency, entry-level CPUs like the AMD Athlon or Intel Celeron do not have the Turbo Frequency specification.

Plus, entry-level CPUs aren’t overclockable anyways.

3 Overclocked Frequency (Done By User)

Overclocked frequency is the CPU’s clock speed in which the Base and Turbo are higher than specified.

Overclocking can drastically improve the performance of the CPU; however, at the same time, it can generate a lot of heat. As such, you have to make sure that adequate cooling is provided.

Overclocking a CPU way beyond its standard clock speed can destabilize your system.

Also Read:

• What Should I Set PCIe Frequency When Overclocking?
• How to Reset Motherboard?

Which CPUs Can be Overclocked?

Having a basic idea of the CPUs and their model can tell if your CPU is overclockable or not begin with.

No need to check if the CPU is overclocked if it isn’t even designed to be overclocked.

1. Laptop CPUs are Locked – Cannot Be Overclocked

Most Laptops do not support CPU overclocking. Only a few rare extraordinary high-end laptops feature CPU overclocking support.

So unless you have a laptop that SPECIFICALLY says somewhere that it is overclockable, you do not worry about overclocking if you have a computer.

2. Only “K” and “X” Series Intel CPUs can be Overclocked

If you have an Intel processor, check if it belongs to the ‘K” series. The Intel “K” series refers to “Unlocked” processors designed to be overclocked.

These have a “K” suffix in their name, such as

• Intel Core i7 11700K
• Intel Core i5 10600K
• Intel Core i3 9350K

The workstation grade “X” series processors can also be overlocked.

These include the likes of:

• Intel Core i9-10900X
• Intel Core i9-10980XE

Also Read: Does My Motherboard Support Overclocking?

3. All AMD Desktop CPU Can Be Overclocked

AMD, unlike Intel, supports overclocking for all of its desktop-based CPUs.

The point I am making in this section is that if your CPU falls in any non-overclockable categories, you do not need to check if it is overclocked.

Also Read:

• Is a Quad Core Processor Good for Gaming?
• How to Tell if PCIe Slot is Bad?

How to Check if CPU is Overclocked?

There are three fundamental ways to check the clock speed to see if it’s overclocked. These are as follows:

1. Checking through Task Manager in Windows
2. Checking through CPU-Z
3. Checking through the BIOS

First Thing First – Find out the Base and Boost Frequency of Your CPU

Knowing your CPU’s manufacture boost frequency is pertinent to check if the clock speed exceeds the specified limit.

In my case, I am using the Intel Core i7-7700HQ.

As shown earlier above, this CPU has the following parameters

• Base Frequency: 2.80 GHz
• Boost Frequency: 3.80 GHz

If my active CPU frequency is beyond 3.80 GHz, then the CPU is overclocked. However, the CPU is not overclocked if it is less than or equal to 3.80 GHz. Simple math!

1. Checking the Clock Speed through Task Manager in Windows

The simplest way to determine if your CPU is overclocked is through the Task Manager in Windows 10.

You must know your CPU’s base and boost frequency for this method.

The following are the steps:

1. Open the Task Manager by either right-clicking on the Task Bar and then selecting Task Manager or by pressing CTRL + ALT + DELETE and then selecting Task Manager.
2. Select the Performance Tab and check the “Speed” provided. If this exceeds your CPU’s turbo frequency, it’s overclocked.
3. You can also see the CPU’s Base Speed. If the Base frequency exceeds the manufacturer specified, your CPU is overclocked.

Since Task Manager tells you accurate time information about your CPU, you can try running different loads and monitoring the clock speed. For instance, try starting a heavy game.

If the CPU maintains a clock speed less than or equal to the Turbo Frequency under stress, then your CPU is NOT overclocked.

2. Checking through CPU-Z

CPU-Z is free software that displays detailed information about your computer hardware, including the CPU. This third-party software lets you check if your CPU is overclocked.

1. Download and install the CPU-Z for Windows. Make sure you download it according to your computer architecture (32-bit or 64-bit).
2. Once loaded, look for the CPU Tab – it’s selected by default on startup.
3. In CPU-Z, pay attention to the “Clocks” section. In this section, the “Core Speed” field highlights the current operating frequency of the CPU. If this number exceeds the Turbo frequency specified by the manufacturer, your CPU is overclocked. It is not if it is less than or equal to the specified Turbo Frequency.

Also, you can do a simple calculation by multiplying the Bus Speed by the Multiplier. The answer will equally match the number in the “Core Speed” field.

If your CPU is overclocked, you would see a higher clock multiplier here, i.e., more significantthan 38 in the case of the above CPU.

Also Read:

• How To Tell if CPU is Bad or Dead?
• How to Tell if RAM will Work with Your Motherboard?

3. Checking through the BIOS

The final and most advanced method is to use BIOS to check if the CPU is overclocked. This is a bit technical, and it is advised not to fiddle with the BIOS settings.

Also, depending on your BIOS version, the interface may differ from user to user.

So here are the steps to this method

1. The first step is to hit the “Delete” or the “F2” key, depending on what system you have to access BIOS when the PC startup.
2. Head over to the CPU Settings on your BIOS – different BIOS versions have other names for this section.
3. You are looking for settings related to the CPU clock, clock multiplier/clock Ratio, and CPU VCore (CPU Voltage). If these have been increased from the default, your CPU is overclocked.
4. To check the default values, reset this section of the BIOS to default. There is always a key in BIOS that you can press to change the team to its default values. If the CPU is not overclocked, this section will not change even after pressing the reset to the default key.

The following video should further explain how the overclocking process works through BIOS. This should give you further insight into whether your CPU is overclocked.

Also Read: What is CPU Throttling?

Why Check if the CPU is Overclocked?

There can be many reasons to check if the CPU is overclocked.

If your system is performing erratically, then this could warrant looking into the CPU’s frequency.

Also, if you have gone through the process of overclocking your CPU and want to ensure the operation was a success, this could warrant a check.

Also Read:

• Will Motherboard Post Without a CPU?
• What CPU is Compatible with My Motherboard?

Finals Words

Here I talked comprehensively about how to check if the CPU is overclocked by using three popular methods. There are many more ways in reality.

For instance, many mid and high-end motherboards come equipped with proprietary tools for overclocking the CPU. However, not everybody has access to such devices.

It should also be highlighted here that certain low-end motherboards do not have the utility or the VRMs to overclock the CPU, even if the CPU is overclockable.

So the motherboard model can be essential in determining whether your CPU is overclocked.

Also Read: Can B Series Motherboards Overclock?