CPS PCCooler has launched the TR620M X, a relatively compact dual-tower air cooler with a single fan. However, that single fan can spin up to 5000RPM, faster than most other PC cooling fans on the market.
According to ITHome, the heatsink measures 115x106x94mm and uses a pure-copper, nickel-plated, reflow-soldered base. The same source states that the heatsink towers are treated with an anti-oxidation spray coating and utilise six 6mm heat pipes to transfer the thermal energy generated by the CPU.
Airflow is provided by a single fan (100x100x25) equipped with a Japanese NMB dual ball bearing. The fan operates at a maximum speed of 5000±10%RPM, delivering a maximum airflow of 105.42CFM and a static pressure of 11.85mmH2O. These figures, as you'd expect, come with a pretty high noise level, up to 45.66dB(A).
According to the official product description, the TR620M X supports a wide range of mainstream workstation platforms. Compatibility includes Intel LGA3647 (narrow type) and 4677, as well as AMD sTRX4, sWRX8, TR4, SP3, TR5, SP5, and SP6. The TR620M X is currently available in China for 439 yuan (£48), with an initial launch price of 339 yuan (£37). Availability outside the Chinese market has not yet been provided.
KitGuru says: For the general consumer, something like the PCCooler TR620M X cooler may be a bit too loud. However, if you don't mind the noise, it should offer a good amount of performance.
GAMEMAX SIGMA 620 WH is designed for users who want both strong cooling and a unique visual touch in their PC build. For a long time, I have personally preferred air cooling because it is simple, reliable, and requires very little maintenance. But in recent years, many liquid coolers have become more attractive because they include small displays that show system information or custom images. Now, GAMEMAX has brought this idea to air cooling with the SIGMA 620 WH, which makes it stand out from many traditional tower coolers.
What makes this cooler interesting is the 2.8-inch customizable LCD screen placed on the top. It can show real-time system information or even display custom images and videos, which adds personality to the setup. At the same time, it still focuses on strong cooling performance with six 6 mm heatpipes, dual 120 mm fans, and support for CPUs up to 245W TDP. This combination allows it to handle powerful processors while also improving the overall look of the PC build.
Unboxing
The SIGMA 620 comes in a clean white box with a simple design. On the front, there is a large image of the cooler. It shows the single tower heatsink, white fans, and the LCD screen on top. The GAMEMAX logo is on the left, while the product name SIGMA 620 is printed on the right. A few icons at the bottom highlight features like PWM support, LCD display, ARGB lighting, and 245W TDP support.
The back of the box shows the main features of the cooler. It explains the 2.8-inch customizable LCD screen, dual-fan single-tower design, and six heatpipes. Small images also show the cooler and its parts.
One side of the box lists the full specifications, including dimensions, fan speed, airflow, noise level, and CPU compatibility. The other side is simple and shows product information in multiple languages along with the official website.
After opening the box, the first thing you see is the user guide placed on top. Under it, the cooler and accessories are packed safely inside a thick foam container. The mounting accessories are stored in a separate small box.
Inside the installation kit, GAMEMAX provides all the required mounting parts for both Intel and AMD platforms.
Inside the box, the following parts are included:
Radiator (tower heatsink)
Forward fan 120mm (A12-B)
Reverse fan 120mm (A12-A)
Universal mounting bracket
Intel backplate (LGA1851 / LGA1700)
Intel spacers (LGA1851 / LGA1700) ×4
AMD spacers (AM4 / AM5) ×4
Intel screws ×4
AMD screws ×4
Buckle strips / fan clips ×4
Thermal paste ×1
Small scraper ×1
Overall, the accessories are well organised and provide everything needed for installation.
GAMEMAX Sigma 620 specifications
Specification
Details
Model
SIGMA 620 WH
Cooler Type
Single Tower Air Cooler
Dimensions
120 × 114.2 × 158.8 mm
TDP Support
Up to 245W
Heatsink Material
Aluminium Fins
Number of Fins
48
Heatpipes
6 × 6mm Heatpipes
Heat Base
Soldered Copper Base
Display
2.8-inch LCD Screen
Fan Size
120 × 120 × 25 mm
Fan Quantity
2 Fans
Fan Type
Positive Blade + Reverse Blade
Bearing Type
Rifle Bearing
Fan Speed
800 – 1800 RPM ±10%
Lighting
ARGB (Motherboard Sync Supported)
Connector
4-pin PWM, 3-pin ARGB
CPU Compatibility
Intel LGA1851 / 1700 / 1200 / 115X
AMD AM5 / AM4
A closer look
Heatsink
The Sigma 620 uses a single tower heatsink design. The cooler measures 120 × 114.2 × 158.8 mm and has a net weight of 154 g. It is available in black and white, and our review unit comes in white. The whole heatsink, including the heatpipes, is finished in full white, which gives it a very clean look.
The heatsink includes 48 aluminium fins. At the center, it uses 6 superconducting composite heatpipes, each with a 6 mm diameter. These heatpipes run through the tower and connect to the base. The sides of the heatsink fins use a raised design, which allows the fan clips to fit securely into the fins for mounting the fans.
The cooler also includes an anti-insect intrusion design. The bottom panel uses an extended design that helps seal the hardware rack holes.
On the top cover, there is a 2.8-inch LCD monitor. This screen sits neatly on the top of the heatsink and adds a modern touch to the cooler.
Fans
The cooler includes two 120 mm fans, each measuring 120 × 120 × 25 mm. The main fan uses a regular blade design, while the secondary fan uses a reverse blade design.
Both fans use rifle bearings. The fan frame colour is white, and each fan has 9 blades. Each fan also includes 28 ARGB LEDs.
Both fans run at 12 V rated voltage with a 5 V start-up voltage. The rated current is 0.22 A for the main fan and 0.2 A for the secondary fan. The rated power is 2.64 W and 2.4 W.
The fan speed ranges from 800 to 1800 RPM ±10%. Maximum airflow is 71.66 CFM for the main fan and 70.71 CFM for the secondary fan. Maximum static pressure is 2.54 mmH₂O and 2.1 mmH₂O. The maximum noise level is 35.5 dBA and 42 dBA.
Both fans have a rated life of 30,000 hours. The connector includes 3-pin AURA ARGB and 4-pin PWM. Each fan also has soft rubber pads on the corners to reduce vibration. A thin ARGB light strip runs along the side of the fan frame, which remains visible and glows in a style similar to infinity fans.
Installation
The installation process of the Sigma 620 is simple and easy to follow. The steps are clearly explained in the user guide, so even new users can install it without confusion. One good thing is that the heatsink can be installed without attaching the fans first, which makes handling and mounting much easier.
The mounting system feels secure once installed, and the cooler sits firmly on the CPU. The included brackets and accessories make the process smooth for both Intel and AMD platforms.
Clearance
When it comes to RAM clearance, the space is quite tight. As seen in the images, the cooler sits very close to the RAM slots, leaving limited room on that side. If you are using RAM with tall heatsinks, you may face compatibility issues. Low-profile RAM would be a better fit in this case.
On the other hand, the clearance on the opposite side is much better. There is enough space around the motherboard area, so it does not cause any issues with other components. You can raise the fan position slightly to get more RAM clearance. However, this comes with a small trade-off, as the fan may cover the RGB lighting, which affects the overall look. Overall, the installation is easy, but the RAM height should be considered before installing this cooler.
Software
The software for the Sigma 620 is very basic, but it gets the job done. The interface is simple and easy to understand, so you don’t need much time to get used to it.
Most of the software is focused on CPU temperature monitoring and screen themes. You can view real-time system data like CPU usage, temperature, and other basic stats directly on the LCD screen.
There are a few pre-built themes available, which you can apply easily. These include system info layouts and simple visual designs. You can also adjust settings like brightness and screen rotation.
One useful feature is that you can create your own custom theme. You can add your own images or simple layouts to personalise the display according to your setup.
Here are a few examples of themes displayed on the Sigma 620 cooler screen.
Testing and thermal performance
We tested the GAMEMAX SIGMA 620 in the GAMEMAX Leader 2 case using an Intel Core i7-12700K with the MSI MPG Z790 CARBON MAX WIFI II motherboard. The room temperature during testing was 28°C. At idle, the CPU stayed around 39°C with low fan speed. The fans remained quiet, and noise was barely noticeable.
Under load, we ran a CPU-Z stress test. The CPU reached around 185W, and temperatures went up to 72°C. The cooler handled this load well. Fan speed increased smoothly, and noise stayed at a comfortable level. There was no thermal throttling, and the system remained stable. For a heavier test, we used the AIDA64 single FPU stress test. In this test, the CPU again stayed in the 180–190W range, and temperatures reached 85°C. This is on the higher side but still within safe limits. The cooler maintained stable performance without any issues.
Overall, the Sigma 620 performs well for a high-performance air cooler. It handles heavy loads without stability problems. The claimed 245W TDP support also seems reasonable based on these results, as it can manage around 190W+ comfortably.
Final thoughts
The GAMEMAX SIGMA 620 WH offers a good balance between performance and design. It stands out by adding a customizable LCD screen, which is not common in air coolers. This gives it a unique touch while still keeping the reliability of traditional air cooling.
The build quality is clean and consistent. The full white finish, including the heatsink and heatpipes, looks neat inside the case. The ARGB lighting and top display add extra visual appeal without feeling too much. In terms of performance, the cooler handled the i7-12700K well. It managed around 190–200W loads while keeping temperatures in a safe range. Fan noise is also controlled, staying quiet at idle and reasonable under load.
The software is simple and basic, but it works fine. It mainly focuses on CPU temperature monitoring and screen themes. You can choose from a few built-in themes or even create your own custom theme, which adds a bit of personalisation.
There are a few things to consider. RAM clearance is tight, especially with taller memory modules. You can adjust the fan position for more space, but it may cover the RGB lighting. The GAMEMAX Sigma 620 WH delivers stable performance and adds a unique feature with its LCD screen. Based on its overall performance and usability, I would give it the EnosTech Performance Award.
ID-Cooling is continuing its aggressive expansion of the Frozn lineup with the launch of the Frozn A620 SLK. This new CPU air cooler introduces a “hybrid” architecture , integrating two “half-tower” fin stacks into a single 160mm-tall unit.
The primary innovation of the Frozen A620 SLK (via ITHome) is its heatsink design. Unlike most dual-tower coolers with two separate heatsink blocks, the Frozn A620 SLK has only one large heatsink with enough space to fit a 120x25mm fan in the middle. This embedded central fan and an external front fan are positioned in opposition to create high-velocity airflow through the fins. The central fan is the AM-120-K, a 120×25 unit capable of reaching 2500 RPM with a static pressure of 3.65 mmAq. This fan utilises a tool-less mounting system for easy maintenance. To ensure maximum RAM compatibility, ID-Cooling has paired this with the AF-120 SLIM (120×15) in the front, which provides 65.2 CFM of airflow despite its 15 mm low-profile frame.
Thermal transfer is handled by six 6mm heat pipes and a precision-machined copper base, enabling a nominal TDP of 260W. This puts the SLK in direct competition with many larger, bulkier dual-tower coolers that often interfere with high-profile memory modules or VRM heatsinks. The 160mm height ensures broad compatibility with standard mid-tower cases.
Compatibility is also a major highlight, as ID-Cooling is already looking ahead. In addition to current staples like Intel's LGA 1700/1851 and AMD's AM4/AM5, the Frozn A620 SLK officially supports the upcoming Intel FCLGA1954 socket. This inclusion suggests that the cooler is prepared for the next generation of Intel desktop processors.
KitGuru says: ID-Cooling was very creative with its fin stack geometry. By sandwiching a full-sized fan between two halves of a tower and slapping a slim fan on the front, they've essentially built a smaller dual-tower cooler that won't bully your RAM.
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