https://videocardz.com/newz/this-massive-external-cooler-can-chill-up-to-four-gpus-at-once
 
[font="'helvetica neue', arial, helvetica, sans-serif; font-size: 22px"]Bykski makes extra large external radiator with nine fans
No, that is not a next-gen reference CPU cooler, at least not yet. Tom’s Hardware reports on an extra large water cooler by Bykski. This is not a product that can be installed in a chassis, on a contrary, it may very well be much larger than many desktop PCs.
 
The B-1080-CEC-X is a box with a massive radiator attached to an array of nine 120 mm fans. This is a full solution with preinstalled pump, radiator, and reservoir. The only thing needed are G1/4 fittings, some coolant, and something to actually cool down. Users can plug this product into a CPU waterblock or liquid cooler for a graphics card. Actually, it can be both and users can expand up to 4 graphics cards, the product description claims. It has up to 2000W of “antipyretic capacity”, so there is definitely room for some high-end desktop GPUs running in a cluster. In fact, Bykski advertises this product for workstation computing stations which can often feature four GPUs or more.
 
This product measures 42×48×14 cm, and it can rival in size many PCs with Mini-ITX or even Micro-ATX motherboards. It can certainly solve the cooling problem, but it will also require a lot of room on its own. At least in this configuration users have some flexibility when it comes to separating the radiator from the heat generated by the GPUs.
 
Bykski’s external cooler is now listed by a Japanese retailer at 72,356 JPY, which is around $525 right now.
 
I'm curious how well this cooler can cool down a GPU. 
 

 
 
 
 

rjohnson11
I'm curious how well this cooler can cool down a GPU.

This looks like overkill for CPU, but suits much better for GPU.

I've been using a Phobya Xtreme NOVA 1080 Radiator with quick disconnects for some years now. It is over kill but, the #1 side benefit is no noise. My PWM fans barely ever break 800 RPM under heavy loads with GPU and CPU cooled.
Other benefits are
easy swapping out of CPU or GPU.
Cooler in case temps
Can Change cases/builds with ease.
Not only have I increased the longevity of my CPU and GPU but also Chipset, VRMs and M.2 drives due to lower in case temps.
I bought a custom magnetic DEMCifilter for easy dust management.
The best part is it will be around for a long time serving many more builds to come.

I'd say the target audience is the overclocking Silent PC enthusiast.
 
My 1st radiator was from a Chevy Vega it's heater core. Somebody else thought if it and many self included tried for themselves. It was a disaster if I'm to be honest but it lead the way to the common place AIO we see today. That was back in the day you bought cheap OCed your way to the top of the food chain and that WAS very doable. 
 
I think the external rads will see greater popularity in the future and this is somewhat evident in some of the most current option becoming available. Barrow, Bykski Alphacool and Watercool make the external rads. They range from 120, 240, 360 to 1080 even 1260 there must be a market for them. Consider putting your favorite ITX case on the desktop and your external rad down under out of site and your cooling performance far exceeds any AIO you can buy especially any that would fit in one of them.
 
Bottom line is longevity I've used my 1080 for 3 different new builds.  Radiators is not something you have to continually upgrade.

Hoggle

austin86
What is this? 2010? 4 GPUs ? sure us older folk like the idea of 4 way SLI with 3 beautiful wom.. I mean 4 GPUs. GPUs...
Joking aside who is the target audience for this?

I would assume miners. Probably a product I developed when Bitcoin was still $60,000 and people could mine ETH with a GPU. Now the crypto market has crashed and you can’t mine ETH with a GPU anymore.

Folders and BOINC crunchers too. I have two water blocks coming tomorrow for my Tesla GPUs
Those are going in with a 6gb Titan Hydro copper. The FP64 double precision calculations is high with these cards.
I have a block for a Titan P I bet will fit on my air cooled 6gb Titan, there is four cards I may have in the loop.
That is if it fits. I'll put it on my dual processor board, could put blocks on both those CPUs too.

kougar
There's a lot of people that have done so. The problem is car fans are super loud which defeats the purpose for most watercoolers.  Nevermind the size/compatibility/mounting issues, or that car radiators are aluminum...

Very true, but I'd connect it to a voltage regulator/potentiometer. For 15+ years I've been getting high powered fans and connecting them to a controller so a high CFM fan running at half speed could be quieter than a thinner fan buzzing its little life away at 100%. My current build uses 120x120x38 173cfm fans which definitely feel like they still blow more air at 45% than thinner fans at 100% and being quiet enough to not be annoying. Copper radiators exist. Or maybe I'd just get a really big heater core. Then, look for a shroud for it. Now I'm just thinking too much into it.

I am seriously thinking about getting a water coil and put it in my duct work for some heat in the Winter. Maybe a 2nd coil outside to take the heat out in the warmer months.
Would not be hard to do jut have to valve it to divert the flow where I need it to go.