So much shiny!!!!   Nice build Managerman!
 

Nereus
 
So much shiny!!!!   Nice build Managerman!
 

 
Thanks!  Build not quite finished yet...lots of details to iron out...
 
-M
 
 
 

 
 
Wowzwers $$$$
Did you consider the EK Terminal Block..?....I used them in all of my previous WC's multi GPU set-ups and the one thing I really liked with them was how they added so much rigidity n support to the overall weight of 2 Cards....or in one case 3 Cards.
Or perhaps it simply wont work with the Active Backplates....

I did consider using the terminal block before I got the active backplates, but when you add the active backplates the block will not work anymore....
 
-M

Just completed my rebuild, 3080 FTW3, EK vector + Ek backplate + cpu upgrade to 5950x
My system is a 011 DXL dual xspc radiators (top + bottom), GPU is in a vertical mount above the push pull.  System fan curve is modest and not too loud.  Push pull nfa-12 on bottom, push nfa-12 on top, single nfa-12 at rear.  Case is hard tube but I wanted to test the block fitment and temps before I drain and take down the hard tube.  I mounted the block and hooked it up an an external ek xe 360 rad and pump to test.
 
I ran furmark for 22 minutes on each run then played games for an hour to get the temps.
 
5800x cpu
Stock fan speeds air cooler
GPU temp - 30.7 idle
GPU temp – 69.9 load
Mem junct – 30.0 idle
Mem junct – 88 load
Hotspot – 35.5 idle
Hotspot – 82.7 load
 
5800x cpu
EK XE external 360 radiator 3x GT fans full speed
GPU temp – 23.8 idle
GPU temp – 39.7 load
Mem junct – 30.0 idle
Mem junct – 50 load
Hotspot – 33.8 idle
Hotspot – 54.9 load
 
 
Replaced the cpu to 5950x, added ek 3080 to 011 hard loop
GPU temp – 26.7 idle
GPU temp – 50.2 load
Mem junct – 32.0 idle
Mem junct – 62 load
Hotspot – 36.7 idle
Hotspot – 65.1 load
 
 
One thing I noticed is on the backplate the instructions are a little off for the thermal pad placement.  Once you start test fitting it you realize it isnt lined up on one section, by the memory closer to the rear of the card.  I added some of the left over thermal pad to make contact all of the components.  Other then that the card worked fine.
I do notice the back plate gets very hot when gaming, like feels weirdly too hot by hand but I guess that is doing its job and transferring the heat from the components.
 
Also there is noticeable coil whine now, even when the case is closed.  It doesn’t happen when benchmarking or normal task, but in games it is noticeable, it seems to die down after a while but I have not been able to isolate which part it is from yet.

Jonnyomega
Just completed my rebuild, 3080 FTW3, EK vector + Ek backplate + cpu upgrade to 5950x
My system is a 011 DXL dual xspc radiators (top + bottom), GPU is in a vertical mount above the push pull.  System fan curve is modest and not too loud.  Push pull nfa-12 on bottom, push nfa-12 on top, single nfa-12 at rear.  Case is hard tube but I wanted to test the block fitment and temps before I drain and take down the hard tube.  I mounted the block and hooked it up an an external ek xe 360 rad and pump to test.

I ran furmark for 22 minutes on each run then played games for an hour to get the temps.

5800x cpu
Stock fan speeds air cooler
GPU temp - 30.7 idle
GPU temp – 69.9 load
Mem junct – 30.0 idle
Mem junct – 88 load
Hotspot – 35.5 idle
Hotspot – 82.7 load

5800x cpu
EK XE external 360 radiator 3x GT fans full speed
GPU temp – 23.8 idle
GPU temp – 39.7 load
Mem junct – 30.0 idle
Mem junct – 50 load
Hotspot – 33.8 idle
Hotspot – 54.9 load


Replaced the cpu to 5950x, added ek 3080 to 011 hard loop
GPU temp – 26.7 idle
GPU temp – 50.2 load
Mem junct – 32.0 idle
Mem junct – 62 load
Hotspot – 36.7 idle
Hotspot – 65.1 load


One thing I noticed is on the backplate the instructions are a little off for the thermal pad placement.  Once you start test fitting it you realize it isnt lined up on one section, by the memory closer to the rear of the card.  I added some of the left over thermal pad to make contact all of the components.  Other then that the card worked fine.
I do notice the back plate gets very hot when gaming, like feels weirdly too hot by hand but I guess that is doing its job and transferring the heat from the components.

Also there is noticeable coil whine now, even when the case is closed.  It doesn’t happen when benchmarking or normal task, but in games it is noticeable, it seems to die down after a while but I have not been able to isolate which part it is from yet.

Looks good....

kamikazi!
 
+1 on the tape for the RGB wire.  I used a tiny piece of electrical tape.

Which Wire? the tiny one on the back of the card for the evga logo that you cant see once the blocks on?

zyther

kamikazi!
 
+1 on the tape for the RGB wire.  I used a tiny piece of electrical tape.

Which Wire? the tiny one on the back of the card for the evga logo that you cant see once the blocks on?

No....we were talkng about the rgb wire within the block
 

chumeniuk
Just installed the active backplate today and of course the memory temps didn't improve.  Went ahead and ordered the Gelid Extreme pads and will replace them all and repaste the GPU.  I got my 3090 from EVGA on launch day and my block was ordered in December '20.  If everything has worked to this point, should I worry about swapping to the revised standoffs?  
 

I'm wondering if the backplate and pads aren't making good contact causing the heat transfer to suck. Hmm

Anyone try using the stock mounting pressure bracket thing that came with the stock air cooler? I am curious if I should have used that for better mounting pressure. I am wondering if it would still allow for the backplate to be installed. I've been running a universal EK water block for years now on the 1080ti/980ti/780ti and my temps were never above 35c on a hot day. I could have just gone with the universal block again but I knew the vrm's and memory chips would need active cooling this time. In the past I used to use thermal adhesive and glue little copper heatsinks to all the vrms and memory chips because a universal block only covers the GPU die (I did this for my 780ti and 980ti).  My 1080ti ran undervolted and overclocked for 99% of its life and I opted out of glueing anything to it. I just kept good airflow over the vrms and memory. It turns out when the GPU die is cooled extremely well, everything else just runs cooler! Seriously the chips and vrms were buck naked! Only the die was cooled and I never had a problem. I wasn't going to risk any of this jerry rigging, corner cutting nonsense on the 3080ti so I went with the EK Quantum Vector. :P Im just not used to seeing temps climbing up to 55c when my room gets hot. Thats 20 degrees warmer than I am used to! Certainly could use some higher speed fans on my radiator now that im pushing 400+ watts of power with just 1 graphics card but dang! Theres a lot of heat in my loop now lol. These cards are hot! I am seriously impressed with how well the stock air cooler performed.

Edited sorry.

wiliks

OV3RCLK4
Another question in general: what are your memory junction temperatures guys? I reused same thermal pads when changing the thermal paste and I think I am having about 5-10 degree higher temps on memory junction than before. Its around 70's under gaming/unigine heaven load and ~80's when brute force load such as furmark is goin on. Are these temps acceptable? I dont want to demount this thingy from my PC again as I am very satisfied how GPU temps are goin atm

 
 
Just did a TSE stress run on my 3090 FTW3 Ultra, default clocking. Active backplate, 2x360 radiators & distro plate. Ambient/Fluid average temperatures: 21/34

min/max/avg temps:
GPU - 25/56/52
MemJ - 36/62/58
Hot Spot - 35/70/65
Avg FPS: 67
Boost clock: 1935mhz

I can tell you the first time I mounted this GPU with the active backplate my temps were WAY worse, and were throttling, but taking it apart I could see that I had applied some lateral pressure when putting things back together and some of the thermal pads had slipped. FWIW.