Intel(R) Core(TM) i5-5200U CPU @ 2.20GHzdepends ion what you are doing with the capture.
Storing it for later - no extra GPU needed.
Streaming it - the built in Intel h.264 encoder works well with Elgato but is not the best of quality but since you are using a laptop then you have little choice. Software encoding will make a big hit on the CPU so if that is what you are looking for then which CPU do you have?