It's very painful to run an android emulator on the i3 machine because it will run very slow. For those who can't afford a new PC, you can try Genymotion emulator. You can use it for free for personal usage.
My pc is i3 4th generation and it works very well, compared to the emulator that android studio gives.
You can watch this video to see how things like Widget Inspector works on a i3 machine.
Hope this post saves you few bugs or delay your next PC purchase.
Thanks,
Srikanth