Tried a EK flat res. Problem is the gap for the pump inlet is too small making the flow worse and the pump noisy. Switched to a tube res and now flow is better and pump is silent even at max speed. Flat res look ok and i kinda get it if you don't have much space, but there is a downside.

@Tigger
Please do not compare EK products with our products. Just because they make mistakes doesn't mean our products have the same problems.

This looks like it will be mountable on a 120mm fan bracket, is that correct? If so this will be a godsend for SFF system builders.

@Dimitriman
That is correct. The outer dimensions are adapted to 120mm fans, so you can do just that.

EddyAlphacool@Tigger
Please do not compare EK products with our products. Just because they make mistakes doesn't mean our products have the same problems.

So how is the pump inlet on yours? The EK had a maybe 6-8mm gap for the pump inlet.

Also i think it is completely fair to compare between PC components whatever they are, what do you think reviews are. Are you not going to allow your product to be tested against similar products from other manufacturers?

@Tigger
Perhaps incorrectly expressed, I just don't think it's fair to suggest that we make identical mistakes with similar products.
I have nothing at all against a direct comparison.

You mean the opening for the water supply to the pump? It is 10mm in diameter.

EddyAlphacool@Tigger
Perhaps incorrectly expressed, I just don't think it's fair to suggest that you make identical mistakes with similar products.
I have nothing at all against a direct comparison.

You mean the opening for the water supply to the pump? It is 10mm in diameter.

No the gap between the pump inlet and the outer face of the res. between the two lines on the pic is an example. if the inlet is in line with the bottom line, and the top line is the inner face of the res. it was thinner than this on the EK, i have been looking through my PC pics but can't find anything that shows it.

Also i never said your res had the same problem as the EK or even expressed it.

Nice, ! That this will gain space in cases. The D5 is considered the best PC liquid pump and also very quiet. But it is not appropriate to close the air flow in small and very full mini casses. So I don’t suggest it for Mini liquide cooleng systems. it is more convenient to place the tank and pump above the processor, and Cooleng has a good solution therefore . I will point out that the air moves much better around round objects.
So, it is a good solution, with proper installation. Anti-vibration connectors are available for purchase.

EddyAlphacool@Dimitriman
That is correct. The outer dimensions are adapted to 120mm fans, so you can do just that.

That's great news. I would also love to see more options for the SFF crowd, like a focus on CPU block + Reservoir + Pump combos. With all the crazy wattages on the next iteration of hardware being launched, SFF systems will depend even more on watercooling for high end builds.

I found something that shows what i mean the black line is the gap between the pump inlet and the inner face. It is not enough.

TiggerAlso i never said your res had the same problem as the EK or even expressed it.

That came perhaps by the translation, that I misinterpreted your first statement somewhat. It sounded to me as if you would assume.

Ok, i think i know what you want to know. Here a picture. Its also 10mm D5 version. For DDC i need to check if needed. Dont have it right now on my table. But i have a version somwhere in our sample warehouse.

Partly off-topic, but aesthetically, I wish Alphacool did something similar to the Eisball, but in a cube format. It could either hide the pump within the cube, or be something like this Flat Reservoir, but extended out so that there's more reservoir capacity while better blending the pump body into it. Basically, either having the pump hidden in the center, or put in a corner of a cube-like reservoir.

If they copy the Eisball though, I hope they improve the reservoir's ability to draw coolant from the bottom of the res rather than the middle, and with an extra drain port if they can't. My biggest complaint with the Eisball was the difficulty in draining it out completely without resorting to just disassembling that section of the loop outright. Filling it was also a PITA, I needed to drill the fill port wider as below the thread, it was a lot narrower than the I/O ports and I needed a straw to help let trapped air out, so if there was also a second port up top that could be used either for airing or a secondary inlet, that would help.

As to what I'd do with a gigantic hunk of acrylic in the case? Either wrap it for aesthetics with some cutout for Tron-esque RGB lighting and fluid metering, or use it as an extra mounting point for an extra SSD or two on the sides (two-sided sticky tape).

I had the ek120 flat D5
Really don't like it, it is noisy and the inlets always traps some bubbles due to poor design.
But it is compact and my current build can only afford that size.

Beside the pump-res tho my build is almost full alphacool, the ES C5, love all the ES quick connects.

Hope this one could replace the flat 120 D5

I wonder which side is consider the "Front" of the unit? pump side or the acrylic side?

@TechLurker
I can understand your criticism of the Eisball. The filling and draining of the water could actually be better with the Eisball. There will certainly be a new version of it at some point, then these things will also be fixed.
A large cuboid as a reservoir with a pump in the middle.... that would be quasi an Eisstation in a new form. This will also be updated at some point, then it might come close to what you have in mind. But that's still up in the air. Step by step.

A D5 has quite some suction on it. If there is not enough room, it strains the pump, which causes noise. I hope the gap on yours is enough as it does look like more gap than the EK had.

Also where the inlet and outlet holes are, try to make them as opened out as possible, as imo it will make flow better.

This is a new concept to me with the placement of the pump/reservoir since my knowledge of open loop water cooling possibilities is limited. Very interesting. Theoretically, this can lower the length of tubing required to complete the loop, thus less clutter. It is also great to see an Alphacool rep active on the forums here. Someday I may attempt an open loop when I have more time.

@Tigger
The distances and flow rates are based on flow calculations and our experience in the enterprise field. Especially for the 1U reservoir for the DDC. Here we had in fact initially too small distances and problems which we then corrected. The experiences and values were taken over for this reservoir of course
It is also a first template for multifunctional distro plates to come. ;)

Always good to see a brand representative here on TPU.

I like this one more than others I have seen, my only fear is discoloration from fluids over time. Is this easy to take apart and clean, the LEDs will show everything.

EddyAlphacool@Tigger
The distances and flow rates are based on flow calculations and our experience in the enterprise field. Especially for the 1U reservoir for the DDC. Here we had in fact initially too small distances and problems which we then corrected. The experiences and values were taken over for this reservoir of course
It is also a first template for multifunctional distro plates to come. ;)

I'm just interested in the UK availability and pricing if available?!.

TheoneandonlyMrKI'm just interested in the UK availability and pricing if available?!.

You can buy it right now from their shop but for the D5 Variant incl. Pump incl. shipping you would be looking at around 160£ + Tax

Shipping to my location is like crazy and costs the same as the product.
Guess I have to wait for it to appear in other online stores or Amazon..

I am working inside a Mini-ITX and would welcome anything smaller if possible, maybe 80mm or 92mm? :D

Running this since 2019, definately not a new thing for me.

1/2 round circumference is enough for the liquid to enter the inlet, with 2x round circumference of expansion, it is visible in the picture.! The 1/2 inch fitters have an internal circumference of around 10 mm, which is enough for liquid to enter the pump. As shown, there are no narrow flowsr botlenecks. When laying liquid cooling we must follow the laws of fluid physics in pipes. ! :)

I think I must be a heathen; I have the plain Eisdecke acetal zero-RGBLED top for my D5 which sits under the power supply shroud out of sight. I run a Y piece into the inlet and hide about half a meter of tube in a large S shape that ends in a fill-port with a bung that I can access by pulling the front cover off my case.

Small reservoirs don't make sense to me when a long fill tube is more convenient, and large reservoirs are surely just vanity projects to take up all the empty space in an ATX case that used to be for 3.5" drives.