Question Need help deciding what PC System to purchase.

Sep 27, 2018
So I have 2 choices: One system which I will build myself for $930 AUD (Note, Australian Currency is lower value to USD, so prices will look higher) the components of this PC are a GTX 1660 (One of the lower tier GPUs as well from Gigabyte), Ryzen 3 2200G, 8gb of RAM 2666MHz, 250ssd and a B450m MOBO.

The second option is a pre-built system from Techfast which includes an RX 580, Ryzen 5 2600 with an A320M MOBO, 8gb of RAM 2400MHz and 120ssd. This one is $799 AUD.

The Ryzen 2600 is definitely better than the 2200G, but the RAM of that build is slightly weaker. The RX 580 is also slightly worse than the 1660 also. I just need some advice from people with better knowledge of setups than me. Like what GPU and CPU matchup is better of the 2 systems? Which one will I be getting more frames from? Also, for the second option, since it's cheaper, I may spend some of the remaining money on more RAM or better storage.

To note also, I am looking for a budget PC setup, I don't need anything crazy.