I can tell you the i5 will totally run StarMade. I have an i7 and an Atom z3745 both running fine. Client mode only on the Atom tho. Anyhow yes the i5 will mos-def run this and do a good job on stock setting BUT intel does make finding the right driver a trial. I'd suggest looking up driver issues related minecraft as the two games share a java basis. The games themselves are practically night and day but the way java handles intel adapters is the same. I'm gonna double check some things on intel's site. I might have some links for you in a bit IF i don't forget to post them. Life happens amirite?
goto your start menu
type cmd
open the app that shows up, you should get a black terminal screen
type in dxdiag
click yes if asked
wait for it to finish
look at the processor it reports back
it should be on that first page under BIOS and just before memory
You can PM me what the processor model says or post it here. No one can really use that info for anything malicious.
Anyhow..
I suspect the driver you need it in the v15 archives someplace but which one specifically is the real rub. I hope you have a sandybridge or better. mean a baytrail tablet can run StarMade but it's a tricky beast to tame.