No, your 10400 is not designed to handle a 3090.
No, your 10400 is not designed to handle a 3090.
I checked your setup and everything seems to be compatible. Your CPU and PSU should work well together. There are no issues reported with the 3090 in general discussions.
The lowest match for the 3090 is likely the 3090 itself or a closely related model.
My screen is a 2K 165Hz model because I had a limited budget, and the 3090 was given to me as a birthday gift. The remaining components were from my previous setup, so I just kept them.
1440p at 165Hz means the display resolution is 1440 pixels wide with a refresh rate of 165 Hz. It should work well on a 3090 monitor. If you prefer, you might upgrade to something like a 3080 for better value, though current prices can be tricky.