Hello! And Welcome to TPU!
I think your desire of having the most powerful machine man can build is very exciting, but it’s not really the best for what you want. I’ll explain myself:
Games nowadays don’t require much CPU power (an example of that is BF3 that can't even stress my i5 2500k).
Games nowadays use 1 to 4 threads (some can use more, but not really need to, like BF3). So, from having a CPU with 4 threads playing a game that uses 2 threads, you won’t benefit from having 6, 8 or 20 threads! Imagine a game that uses 2 threads, the best performing chip on that game will be the one which has most performance with 2 cores active, so it’s better to have an overclocked, fast CPU than 2 slow CPU’s drawing 2x more power while being slower.
The best option you have now (with no money restriction) is the core i7 3960X six-core processor (which has 12 threads to play around). You can overclock it to 4.5GHz and say you have better gaming CPU power than some folks around with 2 Xeons that can’t be overclocked.
As for GPU’s at this time, you don’t have much choice, HD 7970 XFire FTW.
Note that you might have several driver issues when running 4-way XFire, it is the most high end, yes… but from what I have heard on the forums, 3-way is more reliable with less driver issues and good scaling.
So, basically I would recommend getting the X79 platform with an extreme edition processor, 3 or 4-way 7970 Xfire, pick some 2400MHz RAM, RAID0 4 SSD’s and there you go… awesomeness of a build. Ah… and don’t forget to water cool everything up with high quality components
My mind blowing things through the air:
CPU:
Intel Core i7-3960X Extreme Edition Sandy Bridge-E
1049$
Board:
ASUS Rampage IV Formula LGA 2011 X79
369$
GPU’s:
Radeon HD 7970 3GB GDDR5
549$
SSD’s:
Mushkin Enhanced Chronos Deluxe 120G
199$
RAM:
G.SKILL Ripjaws Z Series 32GB (4 x 8GB) 2400MHz
599$
For the case, monitors and cooling parts, i think its up to your own taste, performance should not be affected.
Good luck in this awesome build! And don't forget to update the thread with shinny pics