Hi,
I just got a 1080Ti SC BE and I think over a additional hybrid cooler (400-HY-5598-B1).
So my question is, is it worth?
Is it much more silent? (That the temps will be lower I will not question)

Does anyone have comparison data?
(And can I mount the backplate?)
Thank you!

Plug the pump into the mother board so you can manually set the pump speed via PWM on your motherboard. You can set the pump speed lower if the hum of it running at full speed annoys you while it's idle. 
 
 

I, personally would not spend my money on the hybrid coolers from EVGA (when you can avoid it when buying a card based NVIDIA referenced design like yours). This is my opinion based on pricing of the hybrid kit and all the loudness reported over and over in this forum. If you can afford a 1080Ti I would recommend buying a kit from EKWB such as the A240G (https://www.ekfluidgaming.com/ek-kit-a240g) which fits the card you have (but please check the GPU compatibility list on their website too via the link I posted).
 
While this is $70 over MSRP of the hybrid kit, you also get to cool your CPU and you get a 240mm RAD with 2x 120mm fans which will be much quieter than a single 120mm fan. Now, I don't know what CPU you have but I bought the A240G from my 1080TI SC BE and 6700K and am more than pleased with it. I then overclocked my CPU higher and simply purchased an additional 360mm rad and a bigger res for the pump and the noise level and temperatures are great.
 
Of course this might be off topic here but when purchased a card that is based on the NVIDIA reference design such as the 1080TI SC BE, you do NOT have to be stuck with EVGA hybrid cooler and there are soooo many more/better option out there for your card.
 
Just my 2 cents which I hope you will find useful!

Gotcha!
Well, I am not sure that you will find a silent solution for cooling your GPU on a single 120mm (those cards pushed quite a bit of heat) unless you can lower the fan/pump speed (as recommended by others) which will though result in higher temps but I can't compare to what that would be vs air cooled as the case, your airflow and a lot more could impact that delta.
 

Bobby53
Yeah, bc of this I think, that the hybrid cooler would be a good compromise.

Maybe I can use another really silent fan or two with a push/pull on the single 120mm radi

Pump noise seems to be a hit or miss thing with the EVGA (Asetek) Hybrids. Mine had a slight buzz so a small felt pad between the top of the pump housing and the shroud eliminated it completely.
Anyone saying the stock rad fan is not noisy, is erm....lying. ha ha. It runs at 100% all the time.  My solution was to run with (since I have a dozen laying around)
push/pull Scythe GT's running off a couple of fan headers. I played Dirt 4 @4K with every setting maxed for a couple of hours last night and my temps peaked at 44C.

Bobby53
I think I will try it with a Noctua NF-P12 PWM (or with 2 we will see)
 
To eliminate the pump noise, I'll find a way I think :D

I tried with a brand new Noctua NF-P12 and it was considerably louder than the Scythe GT's. (louder than both Scythe together actually) Maybe I got a bum fan, but I don't get the praise for them (Noctua) given the cost.

HeavyHemi

Bobby53
I think I will try it with a Noctua NF-P12 PWM (or with 2 we will see)
 
To eliminate the pump noise, I'll find a way I think :D

I tried with a brand new Noctua NF-P12 and it was considerably louder than the Scythe GT's. (louder than both Scythe together actually) Maybe I got a bum fan, but I don't get the praise for them (Noctua) given the cost.

Can you pls link me your fans?

dual109
Like somebody said depends what you want to do.  I've ordered a EVGA Hybrid Kit for my FTW3 as its not the best overclocker and I want to ditch XOC precision for AB and maybe try a custom bios, couldn't do the above with the 3 fans asynchronous cooling solution, although you wouldn't have that problem with the 1080ti SC.  
 
I'll report back when I've installed which should be a few days on temps etc.

Thank you!

Like I said, I won't use it for oc I will just keep it silent - more silent than the icx while gaming

Just did a few benches with the new hybrid cooling and I´m quite happy.
Not pushed the card hard at all but is easily beats my old scores on just air, don´t know if it just is that the old air cooler maybe was not cooling memory and GPU enough.
 
I know I have mobile pictures but did them all in a hurry when I was home for lunch :)
 


 
Did a superposition 1080P Extreme first with a score of 6069
and then the Timespy above.
Temperatures did not break 45C so I could maybe have a little more headroom.
 

HeavyHemi

Bobby53
I think I will try it with a Noctua NF-P12 PWM (or with 2 we will see)
 
To eliminate the pump noise, I'll find a way I think :D

I tried with a brand new Noctua NF-P12 and it was considerably louder than the Scythe GT's. (louder than both Scythe together actually) Maybe I got a bum fan, but I don't get the praise for them (Noctua) given the cost.

Just ordered 2x 1450rpm gt's. We'll see, thank you!

Would you recommend using another heat sink paste?

Bobby53
I'm very happy with the hybrid cooler and thank you very much for the Scythe GT's! They are awesome!

Weird isn't it?  I prefer the -14 or -13's over the Scythe -15's. The 15's while they move a huge amount of air and are relatively quiet they seem to suffer more more from 'PWM' noise. In other words the PWM signal causes motor noise in them at certain speeds. I don't get that with the -13 and -14's which you have. As far as the  paste, if you've mounted everything correctly there is little difference. The stock paste is very good.  As an experiment, I reinstalled the pump with TG's Conductonaut.  If there was a degree or two drop under load, it's hard to tell.  Conclusion: the stock paste is good, you might see a slight improvement if you soldered the pump block to the GPU die (like using liquid metal).

Bobby53
Yeah I used the stock paste and I have no temps over 40°.

The GTs are quite expensive if you want low rpm and the one I bought were quite cheap so everything is fine :)

Hi, by stock paste you mean the thermal sticky pad you get on bottom of the Hybrid pump/block??????  Thats what it looks like on bottom of my FTW3 kit anyway.    Just checking if we are on same page here as I have some kyronaut as thinking of using that.

HeavyHemi
My solution was to run with (since I have a dozen laying around)
push/pull Scythe GT's running off a couple of fan headers.

So you prefer the push/pull? I have a 2nd gt and I'm not sure if it is worth. And would you connect it to mobo fan headers or both with a y cable to the pump?

HeavyHemi

Bobby53

HeavyHemi
My solution was to run with (since I have a dozen laying around)
push/pull Scythe GT's running off a couple of fan headers.

So you prefer the push/pull? I have a 2nd gt and I'm not sure if it is worth. And would you connect it to mobo fan headers or both with a y cable to the pump?

I am running push/pull exhaust. I have them on separate motherboard headers. I run the pull fan at 85% and the push fan at 90%.  So both are ~1000 RPM. Since they are silent at that speed, there's no point to me in varying the speed under load. Push/pull allows you to get more airflow with lower fan speeds and less noise. Also, running the fans off of the motherboard saves a few more watts for the GPU to use. GPU boost 3.0 takes into account the power draw of both the pump and the fan.

Okay,
Thank you very much!

Do you have any suggestions for 140mm fans? I need 2 for airflow and 2 for my evga clc280 radiator.