Video memory and clock speed are the two areas MSI Afterburner shines the most when it comes to overclocking your machine. Think of MSI Afterburner as the way to unlock the inner potential of your GPU – the software opens up the voltage settings of your chosen bit of hardware and enables you to improve its overall performance. If you have even a passing interest in making your new gaming PC's graphics card earn its price tag, free optimization software MSI Afterburner is essential. MSI originally wrote Afterburner (opens in new tab) to overclock its own range of graphics cards, but the software has since been opened up to enable Nvidia and AMD card owners to push their hardware to the limit. The best free overclocking tool to wring extra performance from your GPU Download Razer Cortex: Game Booster (opens in new tab).It’s also great if you want to make an older PC work a little harder. It’s a really clever bit of free software for your gaming PC, and it’s ideal if you're looking for a little extra improvement without much effort.

Whether you’re using Steam, Origin or any other platform to launch your games, Game Booster will start trying to enhance your settings to improve your experience automatically. It’s been designed to work with every kind of PC, so whether you’re rocking a basic build or a souped–up monster of a rig, Game Booster has something to offer your machine.

Of course, there are areas of the suite that will lead you to some of Razer’s premium apps, but there’s still a lot of gratis gold to be mined from Razer Cortex: Game Booster (opens in new tab). Razer, as a long established maker of PC gaming peripherals, also makes some very powerful free software to optimize your machine. Optimize your PC's settings, no matter what gaming platform you're using

Razer Cortex: Game Booster (opens in new tab)

Optimize pc for gaming software