I know the f remove the integrated graphics but does this affect other components? Is 9400 a better option?
Other than disabled iGPU they are the same.
https://ark.intel.com/content/www/us/en/ark/compare.html?productIds=190883,134898
But what does the removed integrated graphics mean?
Means, that, theoretically speaking, it should generate less heat, consume less, have some more room for overclocking and most of all, be cheaper.
theoretically.