So, The Radeon RX 570 8 GB I ordered just arrived and I am about to apply it in my Computer case, But I was just wondering, If the performance does not be what I expected it to be, Is it the RAM? My PC is Dell Optiplex 7020 With Replaced power supply Crosair CX-550, Default Motherboard which is Dell 08WKV3 A00 , And with Core i5 4590, 8 GB RAM DDR3 1600 MHz, Radeon RX 570 8 GB (About to apply it), So please answer me as quick as possible.