Which 6000 RAM kit makes sense for a 9800X3D?

For a gaming-focused 9800X3D build, I’d take the least expensive kit that supports the board’s memory profile and has the capacity you need. The difference between CL30 and CL36 at the same data rate is unlikely to be noticeable in most games, especially when the graphics card is the limiting factor.

I’d choose the Patriot if spending the extra €49 doesn’t force a compromise elsewhere. It has the tighter advertised latency, so it’s the straightforward pick if you want the better-spec kit and don’t mind paying for a small potential gain. I just wouldn’t call it a must-have with an X3D processor.

Before buying, check the motherboard’s memory support list for the exact kit, and confirm it has an EXPO profile. A kit not appearing on the list doesn’t automatically mean it won’t work, but support is a useful compatibility check. After assembly, enable the profile in BIOS and verify stability rather than assuming the rated speed is active by default.

Between the two CL36 options, I’d lean toward whichever is cheaper and has the clearer EXPO support and warranty for your region. I wouldn’t reject the Corsair kit based only on reports about other kits, since memory components can vary between product versions. If avoiding that uncertainty matters to you, the slightly pricier Crucial is a reasonable alternative.

One other way to look at it: if that €49 can go toward a more useful part of the build, take the cheaper RAM. If it won’t change anything else and you’d feel better buying the CL30 kit, that’s also a fair choice. The likely gaming difference is small, not a reason to get stuck comparing kits all day.