I need something that is just big enough to house a single pcie card. It will be relatively low powered undervalued and under clocked ivy bridge. So heat won't be huge issue. Add in card is 4x Intel NIC (also low powered)
Exactly what is the size issue?
Can you supply the make/model of the parts to be inside?
What would be the purpose of the x4 nic card?
Do you have a budget?