2023 Annual Stocktake
Recently, though, I found an interesting cooler, the JF13K Mini from Jiushark. This heat dissipation brain hole is huge, and the downward pressure air-cooled dual fan, I think many friends have not seen it, and I will share it with you here. 
The list of the body and accessories, in other words, this set of accessories is neatly packaged, and it looks like it gives people a very high-end feeling. In fact, the price of this set of air cooling is only in the early 200s, which gives people the feeling that it is quite worthwhile. 
The air cooling adopts a unique dual-fan structure, with a pure copper base below and six heat pipes to conduct heat. The fins at the bottom are heightened on both sides to avoid conflicts with the motherboard's memory, and the screws are directly hollowed out for fixing with a screwdriver. The reflow soldering process used in the heat pipe fins has a better thermal conductivity efficiency than the traditional fin process, and the air-cooled surface is also sprayed with nano graphite materials, which is still relatively stacked on the whole. 
Two 10cm fans are mounted on the top and dynamic hydraulic bearings are used inside to better dampen vibrations. The maximum airflow of the fan is 4754cfm, maximum speed 2200fpm, support intelligent temperature control. In addition, the fan also has 8 built-in LED lamp beads, which can be used with high light transmission fan blades to express the perfect ARGB effect. 
This is the effect of the combination, note that the height of the two sides of the air cooling is not the same, the left side corresponds to the motherboard height of 50mm, and the right side corresponds to the memory height of 59mm, which can be compatible with most motherboard memory. The advantage of this set of air cooling is that it covers a wide range, and there is no advantage on the motherboard, and the memory is equivalent to adding an air duct, which can be called a memory overclocking artifact. 
From the perspective of the machine, this set of air cooling is very interesting, the height control is excellent, and it can also cool down the memory by the way. The hardware configuration is Gigabyte Z790 Ice Sculpture, Acer Predator Vesta II 7200MHz. 
Let's take a look at the temperature performance, after all, such a fun heat dissipation, it would be a pity if it was in vain. The first is daily standby, with a processor temperature of 33°C and a memory temperature of 29°C. 
Single roast fpu, big core 51 Small Core 39. The processor power consumption is 144W, the processor temperature is 86°C, and the memory temperature is 29°C. This heat dissipation effect is almost catching up with water cooling, especially for memory heat dissipation, which did not exceed 30°C when running TM5 before. 
Lighting effect display,It's a little regret here,The lighting effects of the motherboard and memory are blocked by heat dissipation,Fortunately, the RGB effect of the dual fans is also outstanding,I feel that this fan is customized for a small chassis,Heat dissipation is powerful,Height control is perfect。 
Nine shark's downward pressure air-cooled radiator really caught my eye, with a very creative shape design, dual fans not only look good but also take into account memory heat dissipation, 8000MHz running TM5 temperature less than 30°C is proof. It's great to use with high-frequency memory, and it's even more powerful for people like me who often toss around memory overclocking. What's even more powerful is that the heat dissipation performance of the heatsink itself is also excellent, coupled with its perfect control of height, this heat dissipation is highly recommended for friends who plan to build a small case.