Alphacool vs. aquacomputer? Once again, today we have a reader review by Elmo from our community that addresses this very issue of GPU water blocks. Since I find the test, the methodology and also the used technique extremely exciting, I have summarized the whole thing as a real article and with the author’s consent also slightly changed so that it fits into the article format. So it’s not an article by me, but a user review with lots of potential. In the course of the test I like to let the author write in the first person, because it is his test, not mine 🙂
The overall view of the complete system I have once cheekily turned to landscape format, otherwise a whole page would have been used just for the picture:
Original reader test by Elmo from the community
This is my first user review, so I would ask for some leniency in the wording. The following values were all determined in the same system, with the same settings under the same conditions, in order to compare the two water coolers from Alphacool and Aquacomputer with each other. First of all I just want to mention that I don’t have the possibilities like a chiller or even a thermal imaging camera, so I can only rely on the temperature sensors in my system and the graphics card here. Thus, a direct comparison of the test with another system or another test is only possible to a limited extent.
The test system is composed as follows:
|Pump:||aquacomputer D5 next with associated aquacomputer Top|
|Radiators:||1x 480 mm (45 mm thickness)
1x 480 mm (30 cm thickness)
1x MoRa 420 LT
|Flow sensor:||aquacomputer High Flow next|
|Temperature sensors:||3x aquacomputer temperature sensor internal/external thread G1/4
1x aquacomputer High Flow next
1x aquacomputer D5 next
|Hose, Other:||13/10 mm, 2x quick couplings from Alphacool, one inline filter|
|Coolant:||Aquacomputer Double Protect Ultra Clear, approx. 3l|
|Mainboard:||ASUS ROG Crosshair VIII Dark Hero (X570 motherboard)|
|Working memory:||Trident Z Neo (2 x 16 GB)32 GB 3800 CL 14|
|CPU:||AMD Ryzen 9 5950X|
|GPU:||AMD Radeon RX 6900XT (reference design)|
|CPU Cooler:||Heatkiller IV Pro|
Test methodology and implementation
The first thing I did was to buy the Alphacool cooling block in the acetal variant, due to the good performance in the test of IgorsLab and integrated it into my system. As mentioned in IgorsLab’s review, Alphacool’s cooling block reduces flow quite a bit, so my D5 next can reach a maximum of 95 L/h at 100% power, this has become the benchmark in testing. In the test, I ran the Timespy several times, as the test exhausts the graphics card to its maximum performance and thus the graphics card can heat up accordingly.
After the test run, the maximum value of the sensors was always read out and noted – the values are given as delta (°K) to the input temperature. The test was carried out accordingly with the aquacomputer kryographics NEXT RX 6800 / RX 6900 nickel-plated version with active backplate as well. Different settings were chosen in the graphics card driver and with the MorePowerTool, these are indicated accordingly before the data in each case. Both water coolers were installed in the test with Thermal Grizzly Kryonaut to ensure a better comparison of the pure cooling performance of the block.