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Hardware·2 min read

Fritzbox 5690 Pro: some units ship with half the memory

Buy a Fritzbox 5690 Pro today and you may get a router with half the RAM and flash storage of the original, at a higher price. Nothing on the box tells you which one.

A white and red Fritzbox 5690 Pro router standing on a desk next to a network cable.
Image: t3n Magazin
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Two Fritzbox 5690 Pro routers can look identical on the shelf and still differ inside. According to several owners, some newer units carry half the memory of the first ones, even though the price has crept up since launch.

Fritz released the 5690 Pro in June 2024. It handles DSL as well as fibre connections and supports Wi-Fi 7 with a theoretical 18.4 gigabits per second. The recommended retail price (UVP) started at 369 euros and now sits at 479 euros, 110 euros more. The company currently asks 350 euros itself, and comparison sites show street prices rising from around 290 euros at the start of 2026 to roughly 320 euros now.

What is different about the new Fritzbox 5690 Pro?

The odd detail came to light when a user bought a second 5690 Pro and noticed that its memory usage was much higher than on his first one. The site Router FAQ then analysed almost 30 data sets from owners. Many units do have 2 GB of RAM and 4 GB of flash storage. Others have only half the RAM. And some have both halved: 1 GB of RAM and 2 GB of flash.

Fritz apparently changed the memory configuration at some point. The article number has not changed, so a buyer cannot see which version is in the box. The serial numbers are consecutive, yet newer units exist that again have the original memory. So the serial number is no reliable guide either.

What can buyers do?

If you specifically want the full-memory version, check the memory right after buying. Router FAQ explains how on its own site. If the router does not match what you expected, you can use your right of return and send it back.

The data set is small, about 30 devices, so it says little about how common the smaller versions are.

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Tags:fritzboxfritzrouterwi-fi 75690 pro

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