PC Benchmark: Test CPU, GPU and Memory Together

Run processor, multi-core, memory and graphics tests in one go and get an overall score with a breakdown you can compare later.

A computer is only as fast as its slowest part. A powerful processor paired with slow memory, or a new graphics card stuck in a laptop running on battery saver, still feels sluggish. This PC benchmark tests the main parts of your system in one run, entirely in your browser, and shows which part is holding the rest back.

In about thirty seconds, the benchmark measures single-core processor speed, multi-core processor speed, memory bandwidth and graphics performance. Each gets its own score, and the four combine into an overall score. Your recent runs are saved, so you can see the effect of upgrades, driver updates, cleaning or new power settings.

How to run the PC benchmark

1. Close games, video calls and heavy browser tabs.
2. Plug laptops into power and choose a performance power mode if available.
3. Press Run PC benchmark and keep the tab in front.
4. Watch each stage complete: CPU single-core, CPU multi-core, memory, then graphics.
5. Read your overall score, the four sub-scores and the note about your weakest area.

What each stage measures

CPU single-core

A fixed mix of integer and floating point work runs on one background thread for four seconds. This reflects how quickly everyday apps, browsers and many games respond.

CPU multi-core

The same work runs on every thread your processor reports. This reflects performance in rendering, video export, compiling and other tasks that split across cores.

Memory

Large 64 MB blocks of memory are written, read and copied to measure bandwidth, the rate at which data moves between memory and processor.

Graphics

A demanding WebGL shader is drawn at three load levels while frame rate is recorded. This shows whether your graphics hardware is being used and how much work it can handle.

How the overall score is calculated

Each sub-score is compared with a fixed RigLab baseline, where about 1000 points represents a typical recent laptop. The overall score is the geometric mean of the four, which means one very weak area pulls the total down noticeably. That is intentional: a balanced system feels faster than one with a single outstanding part and a bottleneck elsewhere.

Understanding your results

When to run a benchmark

A benchmark is most useful as a before and after measurement. Run it when a computer is new or freshly set up, so you have a baseline. Run it again when something feels slower than usual, after a big system or driver update, before and after cleaning or upgrading hardware, and when buying a second-hand computer to check it performs as expected. Because results are saved, you can spot gradual slowdowns that are hard to notice day to day, such as a laptop that loses a little speed each month as dust builds up in its cooler.

Buying a used computer

If you are checking a used laptop or desktop, run the benchmark on battery and plugged in, then run the system information tool to confirm the processor threads, memory and graphics match the listing. A graphics score far below similar machines often means the dedicated GPU is disabled or failing.

Getting consistent results

• Run the benchmark two or three times and look at the typical result.
• Use the same browser and similar window size for every comparison.
• Let the computer cool for a minute between runs.
• Test after restarting to rule out leftover background tasks.
• Note any change you made, such as a driver update, next to each result.
• Keep the device on a hard, flat surface so the fans can breathe during the run.
• Avoid moving the mouse or switching tabs while the graphics stage runs.

Common upgrades and what they change

Adding a second memory stick to enable dual-channel memory often raises the memory score significantly. Cleaning a laptop’s fans and replacing dried thermal paste can restore lost CPU and GPU performance. Updating graphics drivers and enabling hardware acceleration can transform a poor graphics score. A new processor or graphics card changes its own sub-score most, but the overall score shows whether the rest of the system can keep up.

Browser benchmark limits

Browsers add a layer between your code and the hardware, and they limit access to some features for security. Results are best for comparing runs on this site and spotting problems, not for comparing with desktop benchmark suites.

Dig deeper

For more detail on each part, run the CPU test with longer durations, the GPU test with five load levels, and the RAM test for bandwidth and latency. The system information tool lists your hardware, the WebGL test explains graphics problems, and the FPS test shows how your system handles animation.

Frequently asked questions

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