Game Controllers

Both types of connection are wireless and use the 2.4 GHz frequency band. The difference is the transmission technology: Bluetooth is a widely used standard, whereas “2.4 GHz wireless” usually refers to a manufacturer's own radio link with a matching receiver.

Bluetooth: flexible and widely compatible

Many PCs, gaming handhelds, smartphones, tablets and consoles support Bluetooth controllers. If the controller is compatible with the device, you usually pair it once through the Bluetooth settings. After that, it will normally reconnect automatically.

No additional receiver is needed, leaving a USB port free.

However, not every Bluetooth-enabled device supports every Bluetooth controller. Game consoles in particular may require certain controller models or input modes.

2.4 GHz wireless: plug in and play

Controllers using 2.4 GHz wireless usually come with a matching USB receiver (dongle). Plug it in and switch the controller on. The two are often paired already.

This offers several advantages:

• No Bluetooth menu or Bluetooth manager setup is needed.
• It also works with compatible devices that have no built-in Bluetooth.
• Many systems recognize the receiver as a regular USB controller.
• That can be particularly useful for PCs, retro systems and other devices with USB ports.

The device must still support the particular receiver and its input mode. Not every dongle automatically works with every system. Some retro controllers also use dedicated receivers for particular consoles.

What about speed?

Many 2.4 GHz controllers offer high polling rates and low, consistent latency. Modern Bluetooth controllers can also be very fast, however. Actual performance depends on the specific controller and connection.

Which connection should I choose?

Bluetooth is especially useful if you want to use a controller with different compatible devices without carrying an extra receiver.

2.4 GHz wireless is often a good choice if you want a straightforward setup, prefer a responsive connection, or use a device without Bluetooth.

Check the product's technical specifications to see which connections and systems it supports.

Polling rate and latency both affect how quickly a controller responds to your inputs, but they describe two different things.

What is polling rate?

Polling rate describes how often the controller or its connection reports or requests new input data from the system.

It is measured in hertz (Hz).

The higher the polling rate, the shorter the interval between input reports can be.

A high polling rate can therefore be useful in fast-paced games. The connected system must also support the relevant reporting rate.

What is latency?

Latency is the delay between an action on the controller and the moment the system registers that input.

Several factors contribute to this delay:

• How quickly the controller detects and processes the button press.
• How long transmission via cable, Bluetooth or 2.4 GHz wireless takes.
• How quickly the connected system processes the input.

Before the action becomes visible on the screen, the game and display introduce additional processing delays.

Does a 1,000 Hz polling rate automatically mean 1 ms of latency?

No. At 1,000 Hz, only the reporting interval is one millisecond. The total input delay can be considerably higher.

In practice, a well-optimized controller running at 500 Hz can therefore respond faster than a poorly optimized controller running at 1,000 Hz.

Which values matter?

For most games, consistently low latency matters more than the highest possible polling rate.

Low delays can be especially beneficial for fast action games, shooters and competitive games. In retro games, processing by emulators, consoles or FPGA systems and the display also matter.

Our tip: A high polling rate is an interesting technical specification, but does not by itself prove that a controller is fast. Measurements of real-world latency under comparable conditions are more meaningful.