An Asus Saubertooth x79 http://www.asus.com/Motherboards/SABERTOOTH_X79/
with a i7-3930 at 12-38 multiplier
64 GB ram
CPU-z report attached
GPU-Z report attached
I really don't understand this obsession with Mac? Like I have said many times before they are nice computers, they are the best looking boxes - and yes that bin does look pretty :-) and it is probably a good improvement over the past Mac's but they are still behind.
I think a fully kitted out Mac is about $10k
back on topic
Could you give me a description as to what you have in your box and where they are connected - this might be able help you identify your bottlenecks.
All the best