What is it?

This is a USB-connected LED graph that visualizes the core-frequencies of your CPU (up to 10 cores.)

It shows live, how the CPU cores are clocked. Idle cores at minimal frequency is shown as OFF, elevated as GREEN, high as ORANGE and max/turbo frequency as RED.

It plugs into a 4/5 pin USB header of your motherboard, and the unit itself slots into a 5.25" drive bay.

It comes with an Open Sourced Windows Service, and an Open Sourced Linux Daemon.

Why did you make it?

I want my PC to look more like a Cray Super Computer. And not just to look cool, but to actually convey useful information.

In the 1980s, a PC would come with a Turbo LED that showed you whether the PC was running at 8MHz or 4.77MHz. Today, we have lost informational lights on the computer case. Only the HDD LED remains. With this product, you can read the state of your CPU cores from the front of your case.

What makes it special?

Your PC will look like a 1970s Super Computer from NASA.

What is included?

The kit contains:

• PCB with pre-soldered SMD components.
• Microcontroller (pre-programmed)
• Microcontroller header
• Through-hole LED bar graph (x8)
• Through-hole IC
• Through-hole capacitor

Note that the mounting bracket (includes cable, fasteners) is optional. You can also choose full assembly as an option.

Who can use it?

This is for PC-users using Linux. This device no longer works on Windows, as Microsoft has disabled the API for CallNtPowerInformation ProcessorInformation.

This is best used in PC cases that have an external 5.25" drive bay slot. If you do not have a drive bay accessible from the front, you will need to find your own way of mounting the unit in your PC.

How would you use it?

Playing a full screen game, and wondering what the CPU is doing? One glance at your PC case, and you will know.

A website is slow... is it the network, or does the CPU get slammed by inefficient javascript?

You are building the executable from a large code base. Are all cores effectively used?

Is the Linux cpufreq governor working properly? One glance, and you will know!