Johnny_Utah

I wanted to say thank you again.  My July bonus will be here in a few weeks and then I will be able to begin my first 4P project.  It will take a few months for me to save enough for all  four chips, but that's the beauty of this.  I can start with one and build on up.

+1 

Updated Hardware Decisions and Discussions - Power Suppy Unit (PSU) to include the power advisory NOT to use Molex to 8-pin CPU / EPS adapters, this can lead to a FIRE! 

Added it to CPU section -  QuickZ's thread on Improve Opteron 6200's performance (and PPD) by using TurionPowerControl 

Hey man, I'm ordering the parts to do this.
MB- same as yours.
CPU- 4x 6128's (loaned from tanner2) and the same ones Nathan_p is running.
I'm researching the rest, and the reason for this post.
Memory- You say "This translates for optimal performance each CPU needs 4 separate memory sticks."  Can I use 1 8GB stick for each processor and be okay? And how important is cas latency 7 vs 9?
 
I'll have many more ? as I go on and I know I can count on you and our great teammates for help. Even our bros. @ [H].

Afaik, you can run with 1 memory stick per cpu, but you´ll get best results with 4 (4x1GB or more) sticks per cpu

It will certainly run with 1 stick per CPU, but then you will only be using 1/4 of the memory bandwidth available.  You really need 4 per CPU to use all 4 channels.

Ahh that makes sense. Thanks guys!

yodap
Hey man, I'm ordering the parts to do this.
Can I use 1 8GB stick for each processor and be okay? And how important is cas latency 7 vs 9?

 
It would be more important to have 4 stick of memory per CPU than the CAS 7 vs 9. Certainly faster is better, but it do play into Overclocking.

anyone have any suggestions for mounting the 4p motherboard in a rackmount setup with these large coolers on them?

My dad scored me a 6 foot tall server rack and I plan on mounting my folding rigs in this cabinet. 

I was thinking of mounting them on some sort of tray that I could extend out when needed. I am thinking of not using cases since the rack is enclosed and is pretty much a case already.

... Another thought, do these really get that hot if I don't overclock them? I plan on using 4x 6166HE's running stock. Can't I just use a 1U case and mount it all in that and attach to the rack? (http://www.supermicro.com/products/chassis/1U/818/SC818TQ-1400LP.cfm) <- says its made for the H8QGi+-F

mcyhanick
anyone have any suggestions for mounting the 4p motherboard in a rackmount setup with these large coolers on them?
... Another thought, do these really get that hot if I don't overclock them? I plan on using 4x 6166HE's running stock. Can't I just use a 1U case and mount it all in that and attach to the rack? (http://www.supermicro.com/products/chassis/1U/818/SC818TQ-1400LP.cfm) <- says its made for the H8QGi+-F 

You have a ton of options, the questions is do you care how it looks? and how much are you willing to spend for it?
Slide out rails ain't as cheap as one would think, and they have to be match with your case. Certainly you could find a steal at there, but it not unheard of to cost $100 for just the rails.
 
As for 1U servers my below background still applies.

Background: Server boards are design more or less for Data Centers, where cool air is rapidly circular thought the case, with the smallest height and foot print as possible. Rack mounted Data Center devices are generally avoided in the home environment for several reasons. Most folks don't have a server rack at home, they can take up alot of space, but the main reason I believe is the noise levels of the fans. These Data Center devices fans are design to pull high volumes of cool air thru the device and are very loud and typically not user adjustable. How Loud? Take your vacuum cleaner in the closet and turn it on and close the door. If you and significant others are OK with the sound volume, ignore this warning.

 

mcyhanick Another thought, do these really get that hot if I don't overclock them? I plan on using 4x 6166HE's running stock.

 
I've always ran my AMD 4P with CM Hyper+ 212 at stock speed were pretty cool, I'm think 32Cish? Even overclocked usually under 40C.
 
My recommendation is go cheap, and use the money for more hardware.
I'd get the following:

1/2 in. x 2 ft. x 4 ft. Medium Density Fiberboard (MDF) Handy Panel ($8.87 per)

1 - Crown Bolt 1-1/2 in. x 72 in. Steel Plain Slotted Angle ($16.48 per) 

Cut the Steel Slotted Angle for rails and directly bolt to your rack, then cut down the MDF board to use as a platform for the motherboard. 
 
It's basically the same thing I have, except my rack is several inches wide than an standard 19in rack.
Bowlinra's Home Rack Garage Build - Beating the Folding Heat of Summer