1. State your full PC hardware specs including what casing you are using
2. Do you only want to cool the GPU or the CPU as well?
3. Are you looking for soft tube or hard tube?
4. Do you have RM2K? Yes, custom loop is not cheap

State the brand & exact model of your RTX 2080

GPU waterblock, radiator & pump+reservoir already going to cost you RM700 as per the screenshot below
This doesn't include fittings, tubes, coolant, and installation charges

PS: No, you can't salvage your AIO parts to be used with this setup. Your AIO uses aluminium radiator which is going to corrode the Bykski GPU waterblock. Copper & Aluminium doesn't mix together

The same amount of money that you put into that EISwolf setup would be the same amount with your very own custom loop if you assemble yourself

The same amount of money that you put into that EISwolf setup would be the same amount with your very own custom loop if you assemble yourself

That's the wrong waterblock
I believe your RTX 2080 uses NVIDIA reference PCB so you should stick with the waterblock I recommended

This is what your GPU PCB looks right? (excuse some small capacitor/diodes placements)

That's the wrong waterblock
I believe your RTX 2080 uses NVIDIA reference PCB so you should stick with the waterblock I recommended

This is what your GPU PCB looks right? (excuse some small capacitor/diodes placements)

Yup, that is the Nvidia reference PCB
Buy the one I suggested. Not what the seller suggested to you

https://www.bykski.us/collections/gpu-block...r-n-rtx2080ti-x

If I were you, I'd sell both of the AIOs then get CPU waterblock and another 360MM radiator
Just another RM287.85

If I were you, I'd sell both of the AIOs then get CPU waterblock and another 360MM radiator
Just another RM287.85

Any reason why you're mixing the fitting colors?

Also, you can save a lot of money by buying generic fittings. No need to buy branded fittings
I've used generic fittings on my home server and no leaks since December 2020

Bykski fittings & tube price: RM189.45
Generic fittings & tube price: RM86.86

RM189.45 - RM86.86 = RM102.59

You tagged the wrong person?

Your temperature is indeed high
My 2080 Ti only runs at 48°C max on full load. And that's without airconditioner
If I turn on the airconditioner, it can go to as low as 38°C on full load while gaming. Airconditioner set to run at 16°C LOL

I think there are 2 possibilities that might cause your issue
1. Yes, you definitely screwed up the fan installation, you can't have all fans inside the case to be exhaust only. You need intake fans too. You don't have to install extra 3 fans on the side, just convert the bottom fans to intake fans
2. Yeah, you probably screwed up the thermal paste application, but it's quite easy to identify this. Since you're using soft tube, just unscrew the waterblock then see if the thermal paste spread evenly on the GPU die

By the way, what coolant are you using in that loop? I hope you're not using car coolant. That stuff will screw up your liquid cooling system

No need to flush the coolant lah, you're using soft tubing, just unplug the GPU and carefully remove the wateblock without unplugging any tubes
Even rotating the fans won't require any draining

Kalau hard tube mmg die-die no choice but to drain the system first LOL

Hmm, the GPU thermal paste spreads fine
So it's definitely the fans layout  then
Just remember to apply a new layer of themal paste

Owh and by the way, try to tilt your case left, right, front and back to make all the bubbles inside the radiator & the waterblock go into the reservoir. Make sure to run the pump at full sppeed while you do the tilting
Bubbles can also slightly raise the temperature but shouldnt be that high

My 2080 Ti should run hotter than your 2080 so something is definitely not right

It's always advisable to reapply a new layer of themal paste after removing the waterblock, same thing for aircooling heatsink as well

Well, it's cooler than before, but not good enough
The other stuff that I can think off that may cause your RTX 2080 to run hotter than my 2080 Ti are:
1. The coolant
2. The fan
3. The thermal paste
4. Fan filter

The coolant:
The Bykski coolant is probably not good enough in absorbing the heat from the waterblock and transferring it to the radiator
Hence why I only stick with EKWB CryoFuel coolant
Had bad experience with Corsair HL5 & Thermaltake C1000
Both of them cause the loop to turn muddy in less than a month
Had to try them out because EKWB CryoFuel was out of stock and there's only 1 seller in Malaysia who sells them at reasonable price
Waited for several months for the EKWB CryoFuel to be restocked during the MCO era hence why I decided to try those 2 coolants
Oh and I only use the clear transparent coolant, no colors

The fan:
In the market there are 2 types of fan. Airflow fan & Static Pressure fans
Airflow fans are to get air to move in and out of the case without any heatsink/radiator behind or in front of the fans
Static Pressure fans are made to be used on radiator & heatsink
I'm using Arctic P12 PWM PST CO. It's one of the cheapest high static pressure fan with dual ball bearings
What fan are you using?

The thermal paste:
The best thermal paste are the ones with high conductivity
Currently I'm using Thermal Grizzly Kryonaut

Fan filter
Are you using the top fan filter on the top of your O11? If yes, just remove it
You only need to use fan filter on intake, not exhaust

Just switch to EKWB CryoFuel. The premix 1L is already pre-mixed for you, no need to campur campur anymore
Shopee Link: https://shopee.com.my/product/59277182/1886522714
That's the only seller in Malaysia that sells EKWB CryoFuel Premix at a reasonable price

Remember to flush the whole system with lots and lots of distilled water before refilling the system with new coolant

QF120 is an airflow fan, not a static pressure fan
Airflow fan is only good to blow in & out of the case, it's not strong enough to blow air through dense fins in radiators / heatsinks

If you're going to buy the Arctic P12, I'd suggest you buy directly from Taobao. Their price is the cheapest on the

How old is your MX-2? I mean when did you buy it? IINM, thermal paste has a shelf-life. Even when it sits in the tube unused, it will still lose some of it's integrity. Even more if you leave the tube in direct sunlight

You can re-install the intake filter, that's very important to block dust from coming into the case
You need to remove the exhaust filter. Case exhaust filter is really unnecessary