Download CPU-Z Portable 3, a hardware information inspection program that neatly displays detailed information of the CPU, motherboard, and memory. Ready to use in both installation and portable versions, supporting Windows 11.

What is CPU-Z?

CPU-Z is a small free program from CPUID that reads hardware information in a computer and displays it in detail without having to open the case or check the BIOS menu by menu. The program opens up quickly and does not consume system resources. Anyone who wants to know what is inside their computer can get almost all the answers on a single page from this program.

The first page of the program is the CPU tab, which tells the CPU model name, code name, manufacturing process, socket used, operating voltage, down to the number of cores and threads, actual running clock speed, and L1, L2, and L3 cache sizes. This information is very useful when you want to check if the purchased CPU is running at full specs, or when buying a used computer and want to verify that the store did not substitute a lower model.

Next is the Mainboard tab, which tells the brand and model of the motherboard, the chipset used, the BIOS version and date, as well as the graphics card slot version such as PCIe version. This information is important when updating the BIOS, finding the right drivers, or checking if the motherboard supports the targeted new CPU. Meanwhile, the Memory and SPD tabs tell the RAM type, whether it is DDR4 or DDR5, total size, single or dual-channel operation, actual RAM frequency, and timing values such as CL, tRCD, tRP, and tRAS. The SPD goes deeper into each RAM stick, showing the brand, part number, manufacturing date, and supported timings for each slot.

CPU-Z also features a Graphics tab to view graphics card information, including model name, graphics chip, memory size, and clock speed, as well as a Bench tab to test CPU performance for both single-core and multi-core, allowing you to instantly compare scores with other CPU models. This helps to see where our CPU stands compared to newer or more powerful models. If you want to see more in-depth graphics card details, try opening GPU-Z alongside it as well.

The highlight of this program is that it only reads information without making any adjustments or overclocking by itself, making it safe to use without fear of changing settings on the machine accidentally. It is suitable for people who build their own computers and want to check if all parts work as purchased, people who like overclocking and want to view speed and voltage in real-time, and people who regularly repair or check specs for others because just opening the program shows the overall picture of the entire machine.

Key Features

CPU specs. Check the model name, architecture code, number of cores, number of threads, and clock speed of the CPU.
Cache memory. Displays the size and specifications of all levels of cache memory within the processor.
Motherboard information. Retrievate the manufacturer, model, chipset, and BIOS information of the currently used motherboard.
RAM details. Displays the type, capacity, frequency, and timing of the RAM in each slot.
SPD profiles. Read the SPD profile information for each row of memory modules.
Benchmark system. There are benchmarks for comparing CPU performance.
Stress Test system. There is a stress test to continuously monitor the CPU's performance.
Report export. Save the hardware information report as a text file or HTML document.
Portable support. Supports portable mode, allowing access from a folder without installation.
CPU-Z Validator. Works in conjunction with CPU-Z Validator V3 for checking and sharing system information.
New model detection. Help detect new CPU and chipset models that have additional information.

What's new

Version 3.02 – November 04th, 2026

Intel Razor Lake. Added support for new Intel Razor Lake CPUs, ensuring accurate spec data reading.
AMD Radeon AI PRO R9700. Added support for AMD Radeon AI PRO R9700 graphics cards.
Fixed SPD issues on Intel Broadwell-E. Fixed SPD data reading issues on the Intel Broadwell-E platform.
Fixed verification issues in Windows XP. Fixed benchmark result validation issues in Windows XP.

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