This AMD Ryzen notebook deal is probably the best we've ever seen

We reviewers are used to obsessing over incremental technology changes, but every now and then a supernova appears on our radar - something that can single handedly change the status quo.

The AMD Ryzen 4000 family is one such supernova and promises to bring some of the best processing performance ever to laptops, at a price that defies logic.

When we first laid eyes on the Ideapad 5 15, it was immediately clear Lenovo is going for the jugular.

Available for as as little as £475 (roughly $590/AU$920), the IdeaPad is considered an entry level model, so we were delighted to see the AMD Ryzen 7 4700U making an emphatic appearance.

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The laptop comes with 8GB of RAM and a 128GB SSD (M.2 2242, PCIe-NVMe, TLC) and, most importantly, you can swap out Windows 10 for FreeDOS (an MS-DOS equivalent).

You can also add a dummy hard disk drive for free, which means you can integrate a secondary 2.5-inch SSD at a later date.

It also features a 15.6-inch full HD TN display, which you can swap for a touch/non-touch superior IPS model for a small additional fee.

Likewise, if your budget will allow, you can add a fingerprint reader, replace the 45Whr battery with a 57Whr model and exchange the Wireless 2x2 AC for a more advanced Wi-Fi 6 2x2 AX.

Note, the machine is not yet available in Australia or the US, but we've contacted Lenovo to find out when it will appear in non-European regions.