During All my Testing, It has become apparent to me that even though I am using Two 1600W PSU's dedicated to only the Four KPE's, I am still having problems going higher than 1.35v on the Graphics Card GPU's when trying to push Them Harder, So I think I'm going to try Two MORE PSU's and have a dedicated PSU for Each Card! (Looks like I'll be paying Higher Electric Bills Again. LOL!)
 
The present Two Rosewill 1600W PSU's I'm using have a Single Rail rated at 110A Each, But since I can't find any more of these units (i.e., Backordered/Not in Stock, etc...) I went ahead and bought Two Corsair AX1200i's that are Single Rail rated at 100A Each which as I have been advised in previous Posts/PM's/Discussions I need in order to Maximize the available Power when Pushing the OC'ing Limits.
 
Regardless of the Results that are achieved with using Four PSU's, I'll at least have ample PSU's available for practically Any Future Rigs that I Build!
 
     
 
 
  

Nice!

Thanks Gomez99,
 
It may look like Massive Overkill to those who are Not into High-End Overclocking/Benchmarking, But Since I have Continuously been modifying/experimenting with my current Rig, This is but One of the Many Reasons I don't/can't have All my Components in a completely "Enclosed" Case. 

WOW, your benching setup is looking more and more like K|ngP|ns every day, I have heard people say it's overkill, but if you got a card you can dump power into and it still works and clocks, it really does become necessary after a while.

LOL, Thanks Dave, Power Demands have come a Long Way since back when I thought My Thermaltake Toughpower 1200W was "More than you Needed" to handle All the Overclocking/Benching Loads.
 
Just Like I did in My Original "Get it Colder" Thread, The Only way to Push Component Limits is to Continually Experiment with Non-Standard Methods.
 
From All that I have Heard/Read/Seen, If Your going to REALLY Push KPE's upwards to 1.5Vcore +, You are going to Need at the Very Least Four Dedicated Single-Rail PSU's for the 4X KPE's.

Yeah, it really is absolutely nuts the power draw they are capable of. 
Now, how are you powering the other PSU's, you got those 24pin splitters so the power button turns them all on, or are you jumpering the the GPU's PSU's at the 24 pin, or doing something else?
 
And the million dollar question is, how long until you hit your wall of clocking you can do at normal temps and crank up that chiller.    Never forget what thread this is

ATM I have the Two Rosewill 1600W Psu's jumpered at the 24-pin with My Thermaltake 1200W so that All three PSU's come on when I Hit the power button on the ASUS RIV BE, Which I'll be doing more of the same when I add the Two Corsair PSU's.
 

EVGATech_DaveB
And the million dollar question is, how long until you hit your wall of clocking you can do at normal temps and crank up that chiller.    Never forget what thread this is

Right Now the Vapo is -35C while at 5.185GHz and the KPE's are around 18 - 20C with 65F Water Temps on the Chiller (While at Idle in the Windows Screen). 
 
If I Don't Trip my House Electrical Panel Breakers after I add the other PSU's, I'll try Lowering the Chiller Temps More...........But You can Rest Assured that I will NEVER Forget What This Thread is All About!
 

 
 
 
 

Oh ok, I must have missed you going back to subzero on the cards, way cool.
What are you running your system ram at now, 2666, or did you push past that?  I know RAM speed can help PhysX performance/tests as well as some CPU tests, as I recall, we are using the same RAM.  I saw 3dMark say 1333, wasn't sure if it was accurate.
 
Also, curious if you have a pic of this monster, I love seeing the huge OC benching setups :D
 
Glad to hear you will always remember what this thread is about. 

EVGATech_DaveB
Oh ok, I must have missed you going back to subzero on the cards, way cool.
What are you running your system ram at now, 2666, or did you push past that?  I know RAM speed can help PhysX performance/tests as well as some CPU tests, as I recall, we are using the same RAM.  I saw 3dMark say 1333, wasn't sure if it was accurate.
 
Also, curious if you have a pic of this monster, I love seeing the huge OC benching setups :D
 
Glad to hear you will always remember what this thread is about. 

Well, The Cards aren't running at Sub-Zero Yet. They are running between 18C and 20C (64F to 68F) right now.
The G-Skill DDR3 2666 modules are running at 2709 in the ASUS BIOS even though CPU-Z shows them at 1354.
 
Here's a Few Quick Pics as of Today, But Remember, this is ALWAYS Changing.........
 

 

As David Bowie once sang:
 
"This is Major Tom to Ground Control", or in Other Words, I Have the Four PSU's Ready to Go and I am Either Expecting Liftoff on Launch............ or Please Inform My Family that I Died Doing What I Have Always Enjoyed!
 
I Still have a Few more Items on the Checklist to Finish, But Hopefully it won't be very much longer.