Bumping this because now i KNOW the LEDs are faulty. Just got myself a GTX 980 Hydrocopper to SLI with my existing 980SC that I mounted a waterblock and backplate to on my own. Getting the standalone Hydrocopper was actually cheaper than getting the SC and block again and the backplate has been out of stock FOREVER. Once I installed the new card it became VERY clear that the LEDs on my existing block are faulty yet EVGA support is entirely unwilling to help. There was no way to know this when I got the block since I had no frame of reference. I thought it was just my coolant blocking the light. Yet, they claim there's a normal variance in LEDs brightness in products. But as you can see in the picture this isn't variance. These LEDs are straight up dead:
 

 

 
The support guy said they would need to replace the shroud and they don't have any more. That's PREPOSTEROUS! Firstly, the dam block is still in stock. Also, I know for a fact that since I just disassembled it for a cleaning of my loop that the wires and LEDs pop right out. The metal plate unscrews easily from the plexi and the wires come right out. All I asked is that they send me new leads and they quickly refused. I did not spend this kind of money to end up with shoddy ass LEDs and zero customer service. If anyone knows the voltages and current ratings of these LEDs please help as it looks like I'm going to need to fix this crap myself.

devsfan1830
Followup to my little rant. EVGA ended up doing right by me. Helped me register my waterblock which for some reason came without a serial number. Even though the warranty expired 3 days ago they authorized the RMA anyways so they are cross shipping me a new waterblock and hopefully then everything is square. Apologies to EVGA for going off like that. I may have just been a misunderstanding between us on the initial email.

We are always happy to help! Thank you 

The RMA worked!
 

 
Thanks EVGA for working with me to sort this out.

I just received my card too, and the LEDs look a little dim to me, i dont have anything to compare it to..
 

 
 
 
Is that normal?  Not a big deal, but i'd like to have them a little brighter
 
The front plate looks as though no light is shining through, i've already set the brightness to maxium using EVGA experience..
 

ty_ger07
It is supposed to have more light shining through. The OP had the same problem and resolved it by getting a RMA replacement.

Beautiful case by the way. I like that layout.

Thanks, yeah the LEDs lighting up the logo was a definitely something i wanted to show off, but since looking at other people's cards, mine looks a little dim.  They're lit, but just dim. 
I wouldn't RMA this because it's minor and something i can fix, it's not too difficult.  Just time consuming since i have to drain my loop and take everything apart to get the block out.  So seems as though my LEDs are a little dim, does anyone know what size they are so i can buy a replacement and replace it, is it just one LED?. 

You are not really doing yourself any favors by doubling up on both connections with the water loops to two cards like that, the fluid is just dumping straight through to the next card without circulating in the top card. For instance, you should go into the top left of the top card, circulate though the top water block and then out of the bottom right of the top card into the top right of the bottom card, and then out the bottom left of the bottom card....phew...make sense?
 
The way it is now, you have stagnant water not circulating in the blocks and just passing straight through.....Looks really good, but not doing the job right.

Actually, those configurations are not circulating any fluid through one of the cards. You might get a little movement but unfortunately, such as in rludwics case, assuming discharge pressure is coming in from the bottom right, it will shoot straight to the top card, circulate through the top card and out the top left, most of the fluid in the bottom card will not generate any flow. Now, if he was to remove the right interconnecting piece, fluid will flow in, circulate though the bottom card, up into the top card, but in order to circuited through the top card the discharge outlet needs to be moved to the top right connection. Visa-versa, if being supplied from the top, fluid is not circulation through the top card but shooting straight down to the bottom card, the right interconnection piece needs to be removed and the in order for fluid to circulate through the bottom card the discharge outlet need to be relocated to the bottom left outlet.
 
I know is seems silly to argue about it, and both of the cards will remain cooler than on air, but would be more efficient it piped correctly. I perform hydraulic calculations on gridded, looped and tree systems daily for fire protection systems and city water mains for fire hydrants,. just trying to help a brother out here...

mrkwhlr2, I don't know where you get your totally unfounded ideas but running parallel through two GPU's has no effect of pressure flow in either card. Do your home work. As a matter of fact by doing so both cards stay closer in temp to each other than if they were piped in series. I dare you to pop a plug off either the top or bottom card while the system is running and see how wet you get everything. Google it, watch YouTube, go to over clockers dot net, check out JayzTwoCents rig or Pauls Hardware or Linus tech tips. You haven't a clue. And just because you sit in an office drawing up prints for the unskilled trade of Sprinkler Fitters (I was a Union Electrician for 35 years before retirement. A SKILLED trade, we don't screw part A onto part B like sprinkler fitters. We have to design our conduit runs on the fly on the jobsite) does not make you an authority on the workings of PC custom water cooling loops. And as far as the loop direction you have it totally wrong. There is a feed on the backside of the pump to the front rad then it transfers to the top rad then to the monoblock on the CPU and VRM (which you probably didn't even know what it was) and from the monoblock it goes to the GPU's then back to the res. Do some reading and learn something before you stick your foot in your mouth again.

rludwic
mrkwhlr2, I don't know where you get your totally unfounded ideas but running parallel through two GPU's has no effect of pressure flow in either card. Do your home work. As a matter of fact by doing so both cards stay closer in temp to each other than if they were piped in series. I dare you to pop a plug off either the top or bottom card while the system is running and see how wet you get everything. Google it, watch YouTube, go to over clockers dot net, check out JayzTwoCents rig or Pauls Hardware or Linus tech tips. You haven't a clue. And just because you sit in an office drawing up prints for the unskilled trade of Sprinkler Fitters (I was a Union Electrician for 35 years before retirement. A SKILLED trade, we don't screw part A onto part B like sprinkler fitters. We have to design our conduit runs on the fly on the jobsite) does not make you an authority on the workings of PC custom water cooling loops. And as far as the loop direction you have it totally wrong. There is a feed on the backside of the pump to the front rad then it transfers to the top rad then to the monoblock on the CPU and VRM (which you probably didn't even know what it was) and from the monoblock it goes to the GPU's then back to the res. Do some reading and learn something before you stick your foot in your mouth again.

wow...This was totally uncalled for, was only trying to help, obviously struck a nerve here...I'll go and try and remove that foot now!

My opinion and observation is obviously incorrect,  and again I was not meaning to spout or get anyone annoyed, which apparently I have. I think your system looks fantastic and probably is as efficient the way you have it designed. What started out as an LED thread turned into a water flow thread, and that was my fault.
 
Best regards.