ASUS ROG Poseidon GTX 1080 Ti Platinum Edition - Part 2

It’s time to let the liquid flow and put the ASUS ROG Poseidon GTX 1080 Ti Platinum Edition to the ultimate test. We will connect a Koolance Liquid Cooling System and test GPU frequency, gaming performance, and push the video card as hard as possible for its best overclock. Let’s find out what a little liquid can do for a GTX 1080 Ti.


In this evaluation we are going to test and focus on liquid cooling the ASUS ROG Poseidon GeForce GTX 1080 Ti Platinum Edition (ROG-POSEIDON-GTX1080TI-P11G-GAMING) video card. We are going to compare all the results to our previous testing of this video card out-of-the-box on air cooling. We will be able to take the previous evaluation data and compare it today to the new data and find out all the advantages liquid cooling the video card has, since it is a hybrid video card, capable of both operation.

If you are not familiar with the ASUS ROG Poseidon GeForce GTX 1080 Ti Platinum Edition (ROG-POSEIDON-GTX1080TI-P11G-GAMING) video card, check out Part 1 of our evaluation. In that review we go over the specifications, what makes this a hybrid video card, and all of the out-of-box default gaming experiences. We also overclocked the video card just on air to see how high we could push it without liquid cooling. In this way we can now compare that overclock with today’s overclock on liquid cooling to see if it has any advantages. The ASUS MSRP of this video card is $819.99, and it comes ready to plug in a liquid cooling solution right out of the box.

Currently it is $780 at Newegg, but out of stock, while it is $830 at Amazon with Prime Shipping at Amazon and in stock.

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Since we have already tested the default out-of-box gaming performance and overclock on air in the previous evaluation we will not re-test that here. We will use that data and compare it with today’s data. We are using the exact same driver and game versions for testing.

Our goal today is simple, we will connect a Koolance liquid cooling solution to the video card. We will then look at the in-game real-world gaming frequency of the GPU to see if it is any different on liquid versus air. We will then test performance on liquid to compare the performance at default of the GPU on liquid versus air. Then we will overclock as much as possible on liquid and compare the final overclock with the overclock on air. We will also test performance while overclocked to compare the overclock on liquid to the overclock on air. We will also be looking at clock speed, temperatures and wattage along the way to compare. We will conclude with our experiences that liquid cooling had in comparison to air cooling and any advantages it allowed.

Our Liquid Cooling Setup

We are using a Koolance Exos Liquid Cooling System Model EX2-755. We are using standard G1/4" compression and barb fittings. Installation was as easy as screwing on the fitting to the block and connecting our tubing and fittings together. Setup literally took just a minute and then we were up and running on liquid cooling. We did let the cooling system run for a while without power to the video card to get all the air out of the loop and ensured a smooth, full and consistent flow of liquid. This is as easy as easy gets for liquid cooling your GPU.

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One thing we like about the orientation of the connections on this video card is that you have some options. If you do not have a wide case, you can simply connect the tubing at 90 degrees to the card, which means these will be running vertically inside your case. This could work well in a cramped case. If this position doesn’t work for you there is the option of buying elbow fittings which would direct the tubing horizontally, but you will need a wide case for this.

To further sell the aesthetic, ASUS has incorporated RBG lighting on the side of the video card and the back with a log. You can control the color and motion of the lighting. To take it even one step further ASUS has incorporated an "infinity" mirror on the side of the video card so it looks like you are looking into extreme depths when the RGB lighting lights up. It’s a cool affect. With software you can also turn off the lighting if you wish. You will need to install GPU Tweak II though to control the RGB lighting.