@kevin07
Hi,
You could use some Hardware Info tool to know the MB Model and search it online.
I've seen some Laptop models share the same one whitin a Laptop series but with some differences.
I have seen, it's an i7 4th Gen, so maybe there's no better combo.
Despite that,
You may consider to check a new laptop since the CPU and the MB would cost part of another but you'll be stuck also on old hardware.
Apart on battery capacity and screen quality.
--
Here, seems to be adding a QuadCore.
Now I've seen there's an i5 version, so not sure if yours is Dual or Quad.