Excellent product, highly recommended
With this watercooling, I gained about 20° during Microsoft Flight Simulator. I stay at around 65° and this without any noise. Without activity, the temperature is around 36°.
The two fans are connected directly to the radiator, so I only had to connect one 4-wire plug to the motherboard. I set the pump to PWM to manage the pump speed myself via the UEFI BIOS. For those who don't want to bother, you can set the pump to Auto, it takes care of itself to manage its speed and the speed of the fans.
I had some cold sweats during the assembly because when you fix the backplate on the processor side with the 4 screws provided, it moves and is not solidly fixed to the motherboard. With the agreement of the LDLC technical support and thinking that the problem of play was perhaps to allow the pump to stick well on the processor, I finished the assembly of the whole. I was right, once the pump was mounted, everything was firmly fixed on the motherboard. The PC booted correctly and the temperature is as described above.
In short, an excellent product that has the added advantage of being supplied with the thermal paste already installed on the pump.
I am very pleased with the quality of the product and the service, but I have to say that it is a very good product.