Im looking to buy a new PC which can run RuneScape and minecraft with no lag?

I suggest you don't get Alienware because it's expensive for one thing, and 2nd the games you listed aren't demanding, so it would be a waste of money. You can run those games perfectly if you buy a computer $500 dollars and up. You haven't told me if you want to order online or via a store.

I was messing around on walmarts website the other night cuz I have a gift card and I found a decent laptop for under $500 that had an i5, 6g ram, and a decent video setup that would easily play both games. Minecraft is a bit resource heavy for how it looks. I was surprised the first time I played it on an old pc. But runescape was crap last I checked with what it needs to run unless it's been really updated.