As one of the most familiar manufacturers of domestic computer DIY players, Kyushu Fengshen has a high reputation in the field of radiators, and a number of classic radiator products they have launched are still working in the chassis of many users, such as the cost-effective "Xuanbing 400" air-cooled heat dissipation that costs less than 100 yuan. However, in recent years, the CPU has been continuously improved and optimized, the specifications are constantly improving, and the requirements for CPU radiators are also constantly improving, and Kyushu Fengshen has also followed the footsteps in the past two years and launched a variety of new air-cooled radiator products.
They released a new AK620 twin-tower radiator last year, but this product is positioned as a mid-to-high-end air-cooled product, and this year, Kyushu Fengshen has brought a simplified version of the AK620 twin-tower radiator, that is, ice cube 400. As the new representative work of Kyushu Fengshen's single-tower radiator this year, it adopts a four-heat pipe single-tower design, and the official nominal maximum heat dissipation efficiency is 220W. It can be seen that ice cube 400 has good highlights in terms of design and performance.
Appearance and packaging: simple but delicate
Kyushu Fengshen Ice Cube 400 outer packaging as a whole is white as the main color, the design is quite exquisite, the front of the packaging provides the model of the product, the appearance shape and the brand logo, you can also see a green line horizontally throughout the packaging box, and this is the brand tone of Kyushu Fengshen.
Out of the box, the accessories provided by the Ice Cube 400 are simple but practical, including the Ice Cube 400 single fan heatsink body, AMD and Intel platform fasteners (already supporting the 12th generation LGA1700). The product also provides an additional set of fan buckles so that users can expand the Ice Cube 400 to dual fan specifications in the future if necessary.
Ice Cube 400 is equipped with a fan product of FC120P, the size is 120mm, using FDB bearings, the official nominal speed value is 500-1850PRM, the air volume is 66.47CFM, the noise ≤ full load is 28dB (A), and it has a service life of 50,000 hours. However, this fan does not support RGB lighting effects, the design is relatively calm and low-key, but it looks very textured, and it pursues performance performance more when working, suitable for those who do not like "light pollution".
As for the radiator body, its three-dimensional size is 127*97*155mm, the heat sink group size is 120*45*152mm, the overall net weight is 661g, and it adopts a four-heat pipe single-tower structure design.
The radiator is equipped with a family mesh top cover and matrix fin set, which is removable, and the user can also choose to attach a personalized sticker here to make the entire radiator look better. The matrix fin set reproduces the fin shape of the ice array 600, using the flanged Fin process and matrix design, providing excellent heat dissipation and improving the appearance value.
For these 4 high-efficiency pure copper sintered heat pipes, it can be seen that Kyushu Fengshen attaches the two heat pipes in the center together, which can take away cpu heat faster. In terms of fasteners, Kyushu Fengshen Ice Cube 400 provides a 2mm thickness metal backplane and adapter frame, which is compatible with Intel and AMD dual platforms, supports Intel LGA1700/1200/115X and AMD's AM4 platform, basically covering the mainstream platforms currently on the market.
Installation experience: good compatibility, smooth installation process
The entire installation process of Kyushu Fengshen Ice Cube 400 is relatively simple, on the one hand, because the radiator itself is a conventional single-tower design, there is no place to block the memory or motherboard, on the other hand, the buckle provided by Ice Cube 400 is simple and clear, and the installation is simple.
First of all, put the base on the motherboard, and then put on the gel column, and then fix the metal fixing bracket of the radiator, after the silicone grease can install the radiator body, and finally install the fan to complete the installation, basically do not have to look at the instruction manual can also complete the installation, of course, it is recommended to look at the manual, because there are explanations of the installation method between different platforms of Intel and AMD.
After the lighting of the machine can see the overall situation inside the chassis, if you attach a personalized sticker on the top of the air cooling, with the memory sticker and the fan's RGB lighting effect, you may be able to further enhance the overall look.
Tests and instructions
The radiator performance test uses our customized test platform to better obtain consistency and facilitate the comparison of various types of radiator performance. In our test model, after a period of simulation testing, it is finally determined that according to the positioning of the heatsink itself, the heat dissipation capacity under the limit load (300W, simulating the power consumption of the enthusiast-level player CPU), the high load (250W, simulating the power consumption of the high-end CPU) and the medium load (200W, simulating the power consumption of the mid-range CPU) are tested, and the lower heat sink only tests the ability under the load, and the higher positioning will test the ability under high load and limit load. The reader can directly measure the heat dissipation capacity of the radiator from the temperature of the model under each load platform (the temperature has been converted to the temperature when the ambient temperature is 25 degrees by calculating the thermal resistance), the lower the temperature under the load, the better the heat dissipation performance, and this temperature is similar to the temperature of the cpu under the same power consumption under the heat sink, which can be used as a reference for the actual machine temperature.
When testing, the fan of the radiator is running at full speed, and we sometimes test the performance at low speeds as needed for reference.
In order to better compare the heat dissipation, we also convert the heat dissipation performance index of the radiator into a super energy index:
Exp = 19 * Pd/(Tc – Ta)
This super energy index is actually a simple conversion of the thermal resistance of the heat sink, where Pd refers to the load power consumption, Tc refers to the temperature of the above model at the ambient temperature of 25 degrees, Ta refers to the ambient temperature (set to 25 degrees), the larger the Exp, indicating that the heat dissipation performance of the radiator is better. For example, the temperature of the owl D15 air-cooled radiator at 250W is 92.2 degrees, and its super energy index Exp = 19 *250/(92.2-25) = 70.7, under each power consumption, the heatsink thermal resistance of the same condition is basically the same, so this super energy index is also a fixed value, it can be approximated that for every 1 point of the super energy index, the cooling effect on the 300W CPU is better than 1 °C.
Heat dissipation test: Normal level of play
In order to better reflect the actual heat dissipation level of the Kyushu Fengshen Ice Cube 400, we added the Kyushu Fengshen Xuanbing 400 double-edged air-cooled radiator from the same door to the heat dissipation test to compare it, which uses a single-tower double fan specification, but the results after the test show. The heat dissipation performance of the two is equal, basically maintaining a level, as the current high cost performance of Kyushu Fengshen single-tower air-cooled radiator, ice cube 400 heat dissipation performance can fully meet the mainstream users' computer configuration needs.
It should be noted here that at present, the test platform of our super network has been targeted for Intel's new generation LGA 1700 platform. For users who want to use it with Intel's 12th generation Core series processors, there is also a certain reference value.
According to the test data, after conversion to the super energy index, the score of the Kyushu Fengshen Ice Cube 400 is 60.5, which belongs to the upper middle level in the 100-yuan air-cooled radiator, this level may not be enough for high-end configuration, but it is enough to deal with the mainstream level configuration, and it is recommended to use it with Intel 12600K and below processors.
Fastener pressure testing: Complies with new platform standards
Intel's new LGA 1700 socket (Socket V) while retaining a width of 37.5mm, the length increased to 45mm, from square to rectangular, its Z height will be reduced from 7.3mm to 6.5mm, reducing 0.8mm. This requires manufacturers to use new backplanes and brackets to meet the installation requirements of the LGA 1700 socket. In order to ensure good contact between the CPU top cover and the bottom of the heatsink, higher installation pressure is required.
According to Intel's official specifications, the heatsink used by the processor of the LGA 1200 socket must have an installation pressure of at least 30 kg force and a maximum of 80 kg force. In the case of heatsinks used by the processor of the LGA 1700 socket, the range is between 50 kg force and 100 kg force.
The important role of the installation pressure is that when the heatsink comes into contact with the processor, the greater the installation pressure, the smaller the thermal resistance between the two. In the process of increasing the installation pressure, the greater the installation pressure, the faster the thermal resistance decreases, but after reaching a certain level, the decline rate will slow down until it is flat.
LGA 1700 pressure value
Kyushu Fengshen Ice Cube 400 was tested with a clip pressure sensor in the installation of an LGA 1700 socket, and the results showed that the installation pressure of the LGA 1700 socket was 38.9 kg force. For the LGA 1700 platform, although the installation pressure of the Kyushu Fengshen Ice Cube AK400 is not high, such a value is also fully able to meet the needs of the Use of the Intel platform, because in the process of increasing the installation pressure, the greater the installation pressure, the smaller the thermal resistance, but after reaching a certain extent, the thermal resistance decline rate will slow down until the state of flatness, so it is not that the higher the installation pressure, the better.
Fan test: Close to nominal value
In the test, the data comes from the ultra-energy network self-made air volume wind pressure test device, the test device is prepared according to the relevant national standards and ISO standards, through the pipeline test air chamber multi-nozzle / orifice plate to measure the air volume and wind pressure of the fan, as well as with different system impedances (ordinary cold drain, ordinary tower radiator) under the air volume, through the speed tester to monitor the immediate speed of the fan, and in the special silent cabinet to measure the full speed of the fan and the noise value under the ordinary cold discharge.
Our air volume wind pressure test set
The Kyushu Fengshen Ice Cube 400 standard fan has a maximum static pressure of 2.06mmH2O and a maximum air volume of 64.2CFM, which is a small gap with the official nominal value. After installation in the radiator, the airflow decreases due to the increase in system impedance, at which point the airflow drops to 45.7CFM. If the air volume, wind pressure, and system impedance are still relatively vague, you can refer to our popular science article "Truly understanding the air volume and wind pressure of the cooling fan".
Noise test: above nominal, but also without significant noise
The noise test is done in our special mute cabinet, and the ambient noise in the mute cabinet can reach a minimum of 25dBA, which can basically test the true noise level of the sample very well. The following noise values are the noise levels 1 meter away from the sound source.
The noise at full speed idling is 42.3 dBA, and the noise value after installing the heat sink is 34.5 dBA, which is much higher than the maximum noise value of the official nominal 28 dbA, and some noise is generated during the whole test, but it is not very obvious, and the whole environment is quite quiet when the fan is installed in the noise test of the heatsink. The noise test can only be used as a reference, and the user's use environment is related to the chassis style.
Summary: The best value for money at the mainstream level
As a new product at the beginning of this year, Kyushu Fengshen Ice Cube 400 is undoubtedly an excellent CPU air-cooled radiator from the perspective of design, compatibility, heat dissipation performance, noise, etc. During the installation process, because its size is not large, the installation compatibility becomes more friendly, completely does not interfere with any height of the memory module and occlusion, while also supporting the latest Intel LGA1700 socket.
In addition, as a simplified version of the Ice Cube AK620 heatsink, its heat dissipation performance belongs to the upper middle level among 100-yuan products, and it can control The CPU products of Intel 12600K and below. In addition, the noise performance of the Kyushu Fengshen Ice Cube 400 is also a good level, and only slight wind noise can be heard when used with a radiator.
In general, the shape design of Kyushu Fengshen Ice Cube 400 is relatively low-key, simple, no cool RGB lighting effect, but from its design, heat dissipation performance, noise and other comprehensive points of view, it is a relatively cost-effective air-cooled radiator product, if you want a quiet and low-key use environment, then this 139 yuan worth of single-tower CPU radiator should be very suitable for you.