I got my RTX 3080 ftw hybrid yesterday, and wanted to mention a few things about it, in regards to radiator placement mostly
 
My case is a Corsair 750d airflow edition case, and I was able to front mount the radiator, however there are a few things that make it a bit harder than normal
 
1. I wanted to mount the radiator with the tubes at the bottom, an the top of the radiator above the pump, and in this case I was able to do that.
2. length of the tubes were pushed to the limits, when mounting both the fans and the radiator behind the front fan mounting holes, it could reach, though doing that meant the fans's RGB lightly is partly hidden behind the mounting slots
3. In order to get the fans in front, I had to move the GPU down to a lower PCIe slot as it wouldn't quite reach from the top, and kept the radiator behind the mounting slot. Doing so created a slight gap between the fans and the radiator, and and limited the pressure of the fans compared to having them directly connected (load temps went up a good amount, about 10c)
 
So for those wondering about front mounting the radiator in a case that wasn't really meant to have a front mounted radiator, those are my results, if I had a different case, or didn't already have the top slot filled, it likely would have worked better, but at the very least, it's possible here. (or if I just ignored the RGB lighting on the fans)

Don't you want your GPU to be at the top slot closest to the CPU?

Is the 3080 FTW3 ultra hybrid is 5" deep with just the backplate or is that with the tubing curvature included?  If not I'd imagine you'd need to add another 1" to the depth right as the tubes will need a bit of room to bend?  I've got a 280x and I passed on the ftw3 hybrid thinking it won't fit in my case but would rather have this than the xc3 ultra hybrid if it could realistically fit but specs says it's 5.5" and that's coming up pretty close to the glass panel with how a 3090 FE looks (which is 5.5")

eg1122
As far as I know the card dimensions for hybrids are the exact dimensions as their air counterparts. The only exception being the thickness. So length and depth are the same.

Yeah then no way will this fit in a 280x.  Shame, I really like the overhead for an OC with the FTW3.  Doesn't look like the XC3 will ever get a power limit increase via bios with having 2x8 pins vs the 3x8 for ftw3 models.  

Sometime you have to get creative, because of the hose length -  My EVGA 1080Ti FTW3 Hybrids required spacers (about 100mm in this application)
 

z999z3mystorys
I got my RTX 3080 ftw hybrid yesterday, and wanted to mention a few things about it, in regards to radiator placement mostly
 
My case is a Corsair 750d airflow edition case, and I was able to front mount the radiator, however there are a few things that make it a bit harder than normal
 
1. I wanted to mount the radiator with the tubes at the bottom, an the top of the radiator above the pump, and in this case I was able to do that.
2. length of the tubes were pushed to the limits, when mounting both the fans and the radiator behind the front fan mounting holes, it could reach, though doing that meant the fans's RGB lightly is partly hidden behind the mounting slots
3. In order to get the fans in front, I had to move the GPU down to a lower PCIe slot as it wouldn't quite reach from the top, and kept the radiator behind the mounting slot. Doing so created a slight gap between the fans and the radiator, and and limited the pressure of the fans compared to having them directly connected (load temps went up a good amount, about 10c)
 
So for those wondering about front mounting the radiator in a case that wasn't really meant to have a front mounted radiator, those are my results, if I had a different case, or didn't already have the top slot filled, it likely would have worked better, but at the very least, it's possible here. (or if I just ignored the RGB lighting on the fans)

 
We Need Pictures

eg1122

What's the stuff sandwiched between the fans?

 
Not to derail this thread ---> see & post in my build log AIO Folding

Cool GTX

eg1122

What's the stuff sandwiched between the fans?

 
Not to derail this thread ---> see & post in my build log AIO Folding

Cool, thanks!

I have a 750d as well with a H150i in the top, my FTW3 Hybrid on the way and I would definitely be interested in seeing some pictures of your setup.

You could put rubber gaskets between the fans and rads to help with the gap and air flow.

Update, my best port royal score so far
 
max voltage/power/temp +180 core +200 mem
Port royal: http://www.3dmark.com/pr/600010
 
Also happens to be TOP SCORE for my GPU/CPU combo, largely because of how many people are still using 5930k CPUs, but was able to get a +195 core offset one time as well, though with no memory boost, it had a slightly lower score https://www.3dmark.com/pr/599922

Andrew_WOT
Sounds like EVGA needs to revisit hoses length. 

They already have some of the longest hoses of the hybrids I know out there. Any long and it'll need a louder pump. My Seahawk was 350mm iirc, this is 400mm.

But yeah, imagine in the majority of small and Medium cases, 400mm is long enough if not too long in some instances.

z999z3mystorys
a couple of pics, side and front panel removed for better visiblity, I do need to work on it more for cable management and such.

 

 
also it was possible to get it to the top slots, but I had to remove the fans from the front of the case to just behind, which would hide the RGB lights, it did however cool a lot better being right next to the radiator. I'll likely switch it back and take more pics then.

I'd try some black gaffing tape to seal up the fans to the radiator and add some pulling fans in the back.  Or front mount the CPU aio and top mount the hybrid rad, intaking.
 
I'm considering switching to a 750D, was thinking a CLC280 in the front and hybrid rad in the top (intake).  But as far as I can tell there's no way there's enough hose length on any CPU AIO to where you could have it hoses down, without spacing it well off the front mount, due to it being a very long case.

z999z3mystorys
I think a lot of cases and AIO aren't made with front mounting in mind, it any case it does seem to work well, the tiny gap between the radiator and fans isn't really having much of an impact (I ran benchmarks again and the temps were much better, so I think the problem was really a fan profile change I forgot that I made during the test with poor temps.)
Pulling fans on the back might be interesting, but not sure they'd do much more, I recently bought some 140mm fans (which I then had to remove to get in front radiator in, as it uses 120mm fans) so I have some spare 140mm fans, but not 120mm.
 
All in all I think my cooling is pretty good right now, though I could do a push-pull on the CPU AIO, but as I don't have 4 matching 140mm fans (only 3 max) I'd have to get another, which isn't a huge deal (but I don't want to mix fans in on a push/pull set up, I could imagine that causing problems)

IMHO it shouldn't be a problem to mix fans in push pull.  PP is usually good for 4C to 7C improvement.  The Arctic P12 120mm fans are cheap and pretty good on rads.

bavor

kevinc313
 
IMHO it shouldn't be a problem to mix fans in push pull.  PP is usually good for 4C to 7C improvement.  The Arctic P12 120mm fans are cheap and pretty good on rads.

Push pull worked well for me in the past with the EVGA Hybrid cards.
 
Unfortunately the Arctic 120mm PWM fans have a 40% failure rate for me after 1 year of ownership and an annoying hum in the 1000-1200 RPM range.

Yeah thanks, they are cheap.  ~$10 or less vs. $30 for A12's.