I was recommended this one... AMD Radeon RX 560 Specs AMD Polaris 21, 1275 MHz, 1024 Cores, 64 TMUs, 16 ROPs, 4096 MB GDDR5, 1750 MHz, 128 bit www.techpowerup.com
Radeon RX-560, would it be a decent upgrade ?
I would say it would might give a tiny bit better performance but can't find anything that refers to your on board GPU vs external GP. But here's a comparison, though I must point out that comparisons are not always the best view. You might be wasting your money on that upgrade IMOP.