GTX 1080 Ti with 2080 ti?

I have the feeling that my 2080 ti did not bring the required performance and I've bought out a 1080 ti and this in the Crossfire (Raid2) network connected. Now when I try to launch Minecraft, the PC crashes with a graphics error.

You do not have to buy anything, because 2080 Ti is a very good Geforce graphics card. I think that's just because you did not update your video drivers. Something similar I had with GeForce 1050 Ti also that he could not get out even full performance and I could therefore play Minecraft with Shader about only 50 or 60 FPS. Since I updated the drivers, I was able to gamble with Shader up to the 150 FPS. So Updating drivers can work wonders.

If it does not help updating drivers, then simply reinstall Windows. If that does not help either, then either your power supply will not have enough voltage, your processor will not have enough power, or maybe the motherboard or graphics card is not that functional.

Where do I have to connect the driver because in the housing

Driver closes nothing in housing, but you have to install this under Windows. The best tutorial on how to update Geforce graphics driver.

More RGB always helps, you better buy yourself a few LED strips and pack them together with a mini disco ball into the case. If everything is beautifully lit, then Minecraft runs with at least 3824 FPS.

If that does not work, get a new PC and follow this tutorial, then safe will work as it should:

In order to operate a Nvidida graphics card in combination, you need a SLI bridge and two identical cards. Due to strong software mods it is possible to run various Nvidia cards in the SLI, however, the 2080ti relies on NV-Link, while the 1080ti relies on a conventional version of SLI and therefore also has no hardware option to connect these cards. Incidentally, Crossfire is not possible at all, this is only possible with AMD GPUs.

And if you drop the frames in Minecraft, it's guaranteed because of the CPU, because Minecraft is a pretty CPU-heavy game and not too well optimized by Java

Incidentally, what I clicked on in the survey above is of no concern, the correct answer did not exist.

In addition, I assume that you are trolling a little here, I still somehow tried to answer the question and explain

But after that I've already done that somehow does not help.

Please read the whole question through again and tell me afterwards that you realize that this is a troll.

Well, rip.

That's a good question.