Intel NUCs or similar small form factor PCs are real nice. And one can get older gen versions for dirt cheap on ebay or smthg
Discussion
But does it help increasing routing?
Maybe indirectly.
Being online and reliable 24/7 is pretty important. In my experience Pis are somewhat fine in that regard until they are not and the Micro SD card breaks or the USB disk gets flaky and randomly disconnects.
But apart from that, it won't improve your routing