Will an older computer work better with an older kernel?

I have a desktop computer from 2009 which works quite well with Manjaro Cinnamon after replacing the old HDD.
I was wondering whether the computer would perform faster with older LTS kernels like 4.14 or 4.19, instead of latest 5.9 Kernel.

Note: This computer has a Intel Pentium dual core processor with integrated graphics, and does not require any proprietary drivers (even the kernel 2.6 in 2010 used to support it perfectly), so a newer kernel is at least not required for hardware compatibility. Newer programs often consume more memory and CPU cycles, so I was wondering if the kernel would behave in the same way.

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express Integrated Graphics Controller (rev 10)

I dont know about ‘faster’ … but theres always some difference in modules and such.
Manjaro makes it easy to switch kernels … so … try them out and use whatever you want.
Maybe run some sort of benchmark to get some evidence.

Can anyone suggest some benchmark?