System design - electrical / motherboard design - ASIC/Bitcoin

I'm interested in developing my own ASIC boards - more so - I'm trying to replicate the box you can purchase here: [login to view URL] which is basically a bitcoin miner hardware. So I need the system design diagram, along with chipsets you feel we can achieve the same / better performance. Can you do the following:- 1. Design a tech spec which shows whether you can achieve the same 2. match or beat: Hashrate: greater than 65 Gh/s Power Consumption: 620w@120v AC I would need to see proof of past experience, alternatively discuss on what modules you feel would need to be developed.