Hotmetal - what miner are you using and what settings? Thanks
Genoil and using -k zec zec zec
(that will use close to 6 GB of ram on your GPU)
Having an i5 or faster and 8GB+ of RAM also seems to help.
I can get over 40sol/s on my RX480 in my i7 with 16gb machine. But in my dual core Pentium G3220 with 4GB RAM I only get about 30sol/s per card.
I've also noticed a performance boost by having the card in a 16x PCIe slot instead of 1x PCIe. I would imagine PCIe generation differences also making a difference.