What affects GPS more Core Clock or Memory Clock

I’m a little new to mining, so forgive me if this is a stupid question. I have a SAPPHIRE Radeon RX 580 Series 8GB. I currently have it set to
GPU Clock: 1431 mhz
Mem Clock: 2250 mhz

I’ve been at around 2.53 - 2.57 gps. When I increased the Mem Clock to 2250 it didn’t seem to have any effect. Curious if one helps increase gps more then the other?