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.
H81 Pro BTC, G3240, 4GB RAM, 6 x RX470 Nitro+ 4GB (Hynix) = ~230 Sol/s (Linux, 1500 mem strap, no GPU/mem overclock, zogminer)
Stable? Or does it crash every few hours or so. I can't get my 470 stable with any modded bioses.