Today I’m testing the Alphacool Aurora Acryl GPX-N RTX 4090 FE Eisblock, the third water block for NVIDIA’s top-of-the-line model, and the picture is getting more and more solidified as to which cooler design is really good and usable. And this is where it gets really exciting: Alphacool’s cooler costs a whopping 90 to 100 Euros (!) less than the competitor products and still offers the same features. If the price is such a bang for the buck, then only the performance has to be right. And I can already spoil it: the cheapest cooler is (with) the best!
A GeForce RTX 4090 FE is not only expensive, but also still in high demand. The original radiator is almost oversized and as a buyer you hardly have a valid reason to disassemble and rebuild this collector’s item. Well, almost, because the weight and space requirements of this card are the other side of the coin, although the board itself turns out to be quite small. Exactly at this point, however, such a card becomes really interesting for the water cooling fraction, especially since it is one of the somewhat cheaper specimens of this high-end family (assuming a bit of luck).
So the Alphacool Eisblock called Aurora Acryl GPX-N RTX 4090 FE beats the competition by a long way in terms of price. Whether this makes it an unqualified recommendation and where (if at all) there might be some drawbacks, we will clarify today and compare it to the much more expensive, already tested coolers from Corsair and EKWB. And yes, I may already announce a little surprise.
Scope of delivery and accessories
Let’s unpack the cooling block first and see what Alphacool treats us all to. You get the completely assembled water block including acrylic cover and the already firmly screwed terminal including the integrated ARGB LED light bar, an adapter for it to D-RGB Preci-Dip (motherboard), a backplate, a black dual-slot bracket, all screws including the spring screws and washers, matching heat conduction pads, blind plugs including tools, heat conduction paste and a spatula.
By the way, there is also a detailed manual. This then provokes a smile on the face of the customer, who doesn’t have to take the digital detour first. With this, the story of the accessories is then also told and nothing is missing. So I have to look for the hook somewhere else because of the low price. In any case, the full equipment is perfect. Well, almost, because I’ll have to write something about the pads later.
Datasheet DE
Unboxing and key data
The homepage gives out detailed information, so I don’t have to regurgitate everything here. The dimensions are owed to the FE board and so there are around 205.4 mm in length, 147 mm in height and a thickness of around 34.6 mm in the spec sheet, whereby the thickness is owed to the dual-slot bezel. The block itself is much slimmer and is below 2 cm even with backplate. The usual 11.5 mm thick electrolytic copper base material is set as usual and covers all the necessary recesses without having to work with second level and o-rings like Corsair does with the heatsink, for example.
The coldplate is a classic with jetplate, the spacing and thickness of the cooling fins is given as 0.4 mm, which is relatively much, but accommodates the flow. The new design with only one O-ring is good and tidy, but offers the risk of air bubbles collecting in the non-beveled wells. I can only advise to flush the cooler well once before installation and also not to let it dry again. Then the air also no longer “sticks” so well.
The acrylic cover is sleeker than before, and the one thick O-ring thing is well solved. The supply line to the RGB stripe is long enough to be connected to the RGB header of the motherboard using the supplied cable. The rest goes with other ALC products like a CPU water block to connect as a daisy chain. The backplate is purely optical and mainly serves for stabilization. You can put the pads on and it still gives some support as a spacer, but in terms of cooling, it’s rather frippery.
How the whole thing can be assembled now, you will see after the next page.
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Alphacool Eisblock Aurora Acryl GPX-N NVIDIA RTX 4090 Founders Edition mit Backplate (13456)
 | Lagernd im Außenlager, Lieferung 2-3 WerktageStand: 11.12.24 06:48 | 98,97 €*Stand: 11.12.24 06:54 |
 | lagernd: 50+ | 98,98 €*Stand: 11.12.24 06:46 |
 | Lagernd | 99,90 €*Stand: 11.12.24 06:48 |
Corsair Hydro X Series XG7 RGB 40-Series, RTX 4090 FE (CX-9020019-WW)
EK Water Blocks Quantum Line EK-Quantum Vector² FE RTX 4090 D-RGB, Nickel, Acryl (3831109900703)
 | 5-8 Werktage | 251,07 €*Stand: 11.12.24 06:51 |
| Lagernd | 260,90 €*Stand: 11.12.24 06:48 |
 | Lieferzeit 3-5 Werktage | 273,51 €*Stand: 11.12.24 06:55 |
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