There are plenty of mATX motherboards with the geForce 6150
Shuttle uses the Geforce 4 SLi chip for the SN26p which is good.
You mean, nForce 4 SLI. Otherwise, I'd have jumped all over the GF4 SLI a long time ago (sigh).
Mothership: Thuban 1055T@3.7GHz, 12GB DDR3, M5A99X EVO, GTX470+Icy Vision Rev.2@840/3800, Vertex 2E 60GB
Supply ship: Sargas@2.8GHz, 12GB DDR3, M4A88TD-V EVO/USB3
Corsair: Macbook Air Ivy Bridge